Holographic Displays REPORT

96
HOLOGRAPHIC DISPLAYS PROJECT REPORT ON “CONSUMER PREFERENCE TOWARDS 3D TV - AN INVESTIGATION OF JAMMU REGION” PROJECT GUIDE: Mr. P.K. JENA SUBMITTED BY: HIMANI CHOUDHARY (2010MBE07) 2010-2012 SHRI MATA VAISHNO DEVI UNIERSITY JAMMU AND KASHMIR [Type text]

Transcript of Holographic Displays REPORT

Page 1: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

PROJECT REPORT

ON

ldquoCONSUMER PREFERENCE TOWARDS 3D TV- AN INVESTIGATION OF JAMMU REGIONrdquo

PROJECT GUIDE

Mr PK JENA

SUBMITTED BY

HIMANI CHOUDHARY(2010MBE07)

2010-2012

SHRI MATA VAISHNO DEVI UNIERSITY

JAMMU AND KASHMIR

PREFACE

[Type text]

HOLOGRAPHIC DISPLAYS

As we know that theory without practice is a body without soul Without practical training

management education is meaning-less In order to bridge the gap between theory amp reality

management students are exposed to actual working environment This project is an integral

part of the course curriculum of management program In this the student with mature eyes

and understand the dynamics in much better manner

This particular project has been assigned to me by Mr Pabitra Kr Jenna lecturer at College

of Management SMVDU Katra The project is about the ―ldquoConsumer preference towards

3D TV- An Investigation of Jammu regionrdquo

This project has been of great help in providing me an insight in to the real life working of an

organization it gave me a chance to apply all I had learnt to practical situations enhancing

my understanding and image of the business world

This experience in decision making and practical application of knowledge has contributed

greatly to my growth both as a person and manager

HIMANI CHOUDHARY

2010MBE07

ACKNOWLEDGEMENT

It is a well established fact that behind every achievement lays an unfathomable sea of gratitude of those who are always there to encourage you I wish to offer my heartfelt

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HOLOGRAPHIC DISPLAYS

gratitude to such people in my life who extended their support to me and without whom this project would have ever come into extended to me by various personalities in the successful completion of the project

I owe my first words to Prof PK Jena my faculty Coordinator Asst Professor School of Business SMVDU Katra for his whole-hearted support and encouragement in the conception execution and completion of the report I am grateful to him for imparting the knowledge and expertise

I also want to thank the Dean of College of Management SMVDU Dr D Mukhopadhayay for allowing me to undertake this project

I canlsquot do justice with this project without thanking all those respondents whom I interviewed during this period

HIMANI CHOUDHARY

(2010MBE07)

DECLARATION

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HOLOGRAPHIC DISPLAYS

It is hereby declared that the Project report on- ldquoConsumer preference towards 3D TV- An

Investigation of Jammu regionrdquo is being submitted by Himani Choudhary 2010MBE07

MBA(BE) 3rd Semester in partial fulfillment of degree of MBA(BE) from SMVDU Katra is

an original work carried out and that no part of this project has been submitted to any other

degreediploma or university The information given in this project is true to the best of my

knowledge

HIMANI CHOUDHARY

(2010MBE07)

INDEX

Page No

CHAPTER 1 INTRODUCTION 10

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HOLOGRAPHIC DISPLAYS

1 Introduction 10

11 Holography 10

12 History of Holography 10

13 Difference between Holography and Photography 11

14 Holography Working 12

CHAPTER 2 INTRODUCTION TO HOLOGRAPHIC DISPLAYS 15

2 Holographic Displays 15

21 Real time 3-D Display 15

22 Comparison between different Displays 17

232 Depth Perception and Visual Cues 18

233 Quality and Visual Comfort of 3d Displays 20

CHAPTER 3 HOLOGRAPHIC DISPLAY TECHNOLOGY 24

31 Primary goal of the reconstruction 26

32 Hologram calculation 29

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification 29

CHAPTER 4 HOLOGRAPHIC PROCESSING PIPELINE 30

41 Content-Generation 30

42 Views color and depth-information 31

43 Smallest common multiple of the three wavelengths 31

44 Light sources 32

45 Observer tracking (Virtual cameras) 32

46 Transparency 33

47 A holographic video-format 34

48 Hologram-Synthesis 35

49 Hologram-Encoding 36

410 Post-Processing 36

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HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays 37

412 Real-time holography on a PC 38

413 Results 38

CHAPTER 5 APPLICATIONS 39

511 Introduction 39

512 Abstract 40

513 Anisotropic Spinning Mirror 41

52 Apple patent reveals plans for holographic display 42

53 Heliodisplay 43

531 Requirements 44

532 System Includes 44

533 Specifications 44

CHAPTER 6 LITERATURE REVIEW 46

CHAPTER 7 RESEARCH METHODOLOGY 47

71 Title of study 47

72 Objectives 47

73 Research Methodology 47

74 Analysis amp Discussions 48

CHAPTER 8 63

81 DRAWBACKS 63

82 POLICY SUGGESTION 63

83 LIMITATIONS OF STUDY 63

CHAPTER 9 CONCLUSION 64

CHAPTER 10 FUTURE SCOPE 66

101 Future Scope 66

REFERENCES 68

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HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE 68

ABSTRACT

For future 3D TV systems with multi-viewpoint (look around) capability it is not known how

many spatially adjacent images of the same scene ought to be reproduced The display is the

last component in a chain of activity from image acquisition compression coding

transmission and reproduction of 3-D images through to the display itself The scheme for 3-

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HOLOGRAPHIC DISPLAYS

D display adopted is holography where the image is produced by wavefront reconstruction

volumetric where the image is produced within a volume of space and multiple image

displays where two or more images are seen across the viewing field In an ideal world a

stereoscopic display would produce images in real time that exhibit all the characteristics of

the original scene This would require the wavefront to be reproduced accurately Holography

enables 3-D scenes to be encoded into an interference pattern however this places

constraints on the display resolution necessary to reconstruct a scene Although holography

may ultimately offer the solution for 3DTV the problem of capturing naturally lit scenes will

first have to be solved and holography is unlikely to provide a short-term solution due to

limitations in current enabling technologies However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and

distribution cannot be displayed Multiple image displays take many forms and it is likely

that one or more of these will provide the solution(s) for the first generation of 3DTV

displays

3DTV is regarded by the experts and the general public as the next major step in video

technologies The ghost-like images of remote persons or objects are already depicted in

many futuristic movies both entertainment applications as well as 3D video telephony are

among the commonly imagined utilizations of such a technology As in every product there

are various different technological approaches also in 3DTV By the way 3D technologies

are not new the earliest 3DTV application is demonstrated within a few years after the

invention of 2D TV However earlier 3D video relied on stereoscopy Current work mostly

focuses on advanced variants of stereoscopic principles like goggle-free autostereoscopic

multi-view devices However holographic 3DTV and its variants are the ultimate goal and

will yield the envisioned high-quality ghostlike replicas of original scenes once technological

problems are solved Holography is not based on human perception but targets perfect

recording and reconstruction of light with all its properties If such a reconstruction is

achieved the viewer embedded in the same light distributions the original will of course see

the same scene as the original Holographic 3DTV can be achieved if the holographic

recordings and the associated holographic display can be refreshed in real-time However

due to limitations regarding the pixel sizes such holographic 3DTV displays have a very

small angle of view (about 2 degrees) and therefore far from being satisfactory at present

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

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HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits

CHAPTER 1

INTRODUCTION

1 Introduction

We live today in a communication society where information exchange widely relies on

visual representation it is amazing that most of the screens we are using plenty of hours per

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HOLOGRAPHIC DISPLAYS

day for work or entertainment get along with a at 2D image Generally complex data can be

interpreted more effectively when displayed in three dimensions In information display

industry three-dimensional (3D) imaging display and visualization are therefore considered

to be one of the key technology developments that will enter our daily life in the near future

Natural perception of depth as in daily life however remains still a challenging task in

display technology as much as for content creation This involves display performance eye

visual acuity and visual perception The purpose of this report is to review current 3D

display technologies and especially how they provide crucial depth cues

11 Holography

Holography (from the Greek whole + writing drawing) is a technique that allows

the light scattered (reflected) from an object to be recorded and later reconstructed so that

when an imaging system (a camera or an eye) is placed in the reconstructed beam an image

of the object will be seen even when the object is no longer present The image changes as

the position and orientation of the viewing system changes in exactly the same way as if the

object were still present thus making the image appear three-dimensional Holography is the

only visual recording and playback process that can record our three-dimensional world on a

two dimensional recording medium and playback the original object or scene to the unaided

eyes as a three dimensional image The image demonstrates complete parallax and depth-of-

field and floats in space either behind in front of or straddling the recording medium The

technique of holography can also be used to optically store retrieve and process information

12 History of Holography

Holography was invented in 1947 by the Hungarian-British physicist Dennis Gabor work for

which he received the Nobel Prize in Physics in 1971 Pioneering work in the field of physics

by other scientists including Mieczysław Wolfke resolved technical issues that previously

had prevented advancement The discovery was an unexpected result of research into

improving electron microscopes at the British Thomson-Houston Company in Rugby

England and the company filed a patent in December 1947 (patent GB685286)

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HOLOGRAPHIC DISPLAYS

Fig 11 Dennis Gabor

The optical holography did not really advance until the development of the laser in 1960 The

development of the laser enabled the first practical optical holograms that recorded 3D

objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and

Juris Upatnieks at University of Michigan USA

13 Difference between Holography and Photography

Table I Difference between Holography and Photography

1 Allows the recorded scene to be viewed from

a wide range of angles

The Photograph gives only a single

view

2 Same perception of a three-dimensional

image

Photograph is a flat two-dimensional

representation

3 When a hologram is cut in pieces the whole

scene can still be seen in each piece

Photograph is cut in pieces each

piece shows only part of the scene

4 Can only be viewed with very specific forms

of illumination

Can be viewed in a wide range of

lighting conditions

5 Appears to bear no relationship to the scene

which it has recorded

Clearly maps out the light field of the

original scene

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HOLOGRAPHIC DISPLAYS

Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

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HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

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HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

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HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

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HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

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HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

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HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

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HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

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HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

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HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

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HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

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HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

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HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

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HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

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HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 2: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

As we know that theory without practice is a body without soul Without practical training

management education is meaning-less In order to bridge the gap between theory amp reality

management students are exposed to actual working environment This project is an integral

part of the course curriculum of management program In this the student with mature eyes

and understand the dynamics in much better manner

This particular project has been assigned to me by Mr Pabitra Kr Jenna lecturer at College

of Management SMVDU Katra The project is about the ―ldquoConsumer preference towards

3D TV- An Investigation of Jammu regionrdquo

This project has been of great help in providing me an insight in to the real life working of an

organization it gave me a chance to apply all I had learnt to practical situations enhancing

my understanding and image of the business world

This experience in decision making and practical application of knowledge has contributed

greatly to my growth both as a person and manager

HIMANI CHOUDHARY

2010MBE07

ACKNOWLEDGEMENT

It is a well established fact that behind every achievement lays an unfathomable sea of gratitude of those who are always there to encourage you I wish to offer my heartfelt

2 | P a g e

HOLOGRAPHIC DISPLAYS

gratitude to such people in my life who extended their support to me and without whom this project would have ever come into extended to me by various personalities in the successful completion of the project

I owe my first words to Prof PK Jena my faculty Coordinator Asst Professor School of Business SMVDU Katra for his whole-hearted support and encouragement in the conception execution and completion of the report I am grateful to him for imparting the knowledge and expertise

I also want to thank the Dean of College of Management SMVDU Dr D Mukhopadhayay for allowing me to undertake this project

I canlsquot do justice with this project without thanking all those respondents whom I interviewed during this period

HIMANI CHOUDHARY

(2010MBE07)

DECLARATION

3 | P a g e

HOLOGRAPHIC DISPLAYS

It is hereby declared that the Project report on- ldquoConsumer preference towards 3D TV- An

Investigation of Jammu regionrdquo is being submitted by Himani Choudhary 2010MBE07

MBA(BE) 3rd Semester in partial fulfillment of degree of MBA(BE) from SMVDU Katra is

an original work carried out and that no part of this project has been submitted to any other

degreediploma or university The information given in this project is true to the best of my

knowledge

HIMANI CHOUDHARY

(2010MBE07)

INDEX

Page No

CHAPTER 1 INTRODUCTION 10

4 | P a g e

HOLOGRAPHIC DISPLAYS

1 Introduction 10

11 Holography 10

12 History of Holography 10

13 Difference between Holography and Photography 11

14 Holography Working 12

CHAPTER 2 INTRODUCTION TO HOLOGRAPHIC DISPLAYS 15

2 Holographic Displays 15

21 Real time 3-D Display 15

22 Comparison between different Displays 17

232 Depth Perception and Visual Cues 18

233 Quality and Visual Comfort of 3d Displays 20

CHAPTER 3 HOLOGRAPHIC DISPLAY TECHNOLOGY 24

31 Primary goal of the reconstruction 26

32 Hologram calculation 29

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification 29

CHAPTER 4 HOLOGRAPHIC PROCESSING PIPELINE 30

41 Content-Generation 30

42 Views color and depth-information 31

43 Smallest common multiple of the three wavelengths 31

44 Light sources 32

45 Observer tracking (Virtual cameras) 32

46 Transparency 33

47 A holographic video-format 34

48 Hologram-Synthesis 35

49 Hologram-Encoding 36

410 Post-Processing 36

5 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays 37

412 Real-time holography on a PC 38

413 Results 38

CHAPTER 5 APPLICATIONS 39

511 Introduction 39

512 Abstract 40

513 Anisotropic Spinning Mirror 41

52 Apple patent reveals plans for holographic display 42

53 Heliodisplay 43

531 Requirements 44

532 System Includes 44

533 Specifications 44

CHAPTER 6 LITERATURE REVIEW 46

CHAPTER 7 RESEARCH METHODOLOGY 47

71 Title of study 47

72 Objectives 47

73 Research Methodology 47

74 Analysis amp Discussions 48

CHAPTER 8 63

81 DRAWBACKS 63

82 POLICY SUGGESTION 63

83 LIMITATIONS OF STUDY 63

CHAPTER 9 CONCLUSION 64

CHAPTER 10 FUTURE SCOPE 66

101 Future Scope 66

REFERENCES 68

6 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE 68

ABSTRACT

For future 3D TV systems with multi-viewpoint (look around) capability it is not known how

many spatially adjacent images of the same scene ought to be reproduced The display is the

last component in a chain of activity from image acquisition compression coding

transmission and reproduction of 3-D images through to the display itself The scheme for 3-

7 | P a g e

HOLOGRAPHIC DISPLAYS

D display adopted is holography where the image is produced by wavefront reconstruction

volumetric where the image is produced within a volume of space and multiple image

displays where two or more images are seen across the viewing field In an ideal world a

stereoscopic display would produce images in real time that exhibit all the characteristics of

the original scene This would require the wavefront to be reproduced accurately Holography

enables 3-D scenes to be encoded into an interference pattern however this places

constraints on the display resolution necessary to reconstruct a scene Although holography

may ultimately offer the solution for 3DTV the problem of capturing naturally lit scenes will

first have to be solved and holography is unlikely to provide a short-term solution due to

limitations in current enabling technologies However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and

distribution cannot be displayed Multiple image displays take many forms and it is likely

that one or more of these will provide the solution(s) for the first generation of 3DTV

displays

3DTV is regarded by the experts and the general public as the next major step in video

technologies The ghost-like images of remote persons or objects are already depicted in

many futuristic movies both entertainment applications as well as 3D video telephony are

among the commonly imagined utilizations of such a technology As in every product there

are various different technological approaches also in 3DTV By the way 3D technologies

are not new the earliest 3DTV application is demonstrated within a few years after the

invention of 2D TV However earlier 3D video relied on stereoscopy Current work mostly

focuses on advanced variants of stereoscopic principles like goggle-free autostereoscopic

multi-view devices However holographic 3DTV and its variants are the ultimate goal and

will yield the envisioned high-quality ghostlike replicas of original scenes once technological

problems are solved Holography is not based on human perception but targets perfect

recording and reconstruction of light with all its properties If such a reconstruction is

achieved the viewer embedded in the same light distributions the original will of course see

the same scene as the original Holographic 3DTV can be achieved if the holographic

recordings and the associated holographic display can be refreshed in real-time However

due to limitations regarding the pixel sizes such holographic 3DTV displays have a very

small angle of view (about 2 degrees) and therefore far from being satisfactory at present

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

8 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits

CHAPTER 1

INTRODUCTION

1 Introduction

We live today in a communication society where information exchange widely relies on

visual representation it is amazing that most of the screens we are using plenty of hours per

9 | P a g e

HOLOGRAPHIC DISPLAYS

day for work or entertainment get along with a at 2D image Generally complex data can be

interpreted more effectively when displayed in three dimensions In information display

industry three-dimensional (3D) imaging display and visualization are therefore considered

to be one of the key technology developments that will enter our daily life in the near future

Natural perception of depth as in daily life however remains still a challenging task in

display technology as much as for content creation This involves display performance eye

visual acuity and visual perception The purpose of this report is to review current 3D

display technologies and especially how they provide crucial depth cues

11 Holography

Holography (from the Greek whole + writing drawing) is a technique that allows

the light scattered (reflected) from an object to be recorded and later reconstructed so that

when an imaging system (a camera or an eye) is placed in the reconstructed beam an image

of the object will be seen even when the object is no longer present The image changes as

the position and orientation of the viewing system changes in exactly the same way as if the

object were still present thus making the image appear three-dimensional Holography is the

only visual recording and playback process that can record our three-dimensional world on a

two dimensional recording medium and playback the original object or scene to the unaided

eyes as a three dimensional image The image demonstrates complete parallax and depth-of-

field and floats in space either behind in front of or straddling the recording medium The

technique of holography can also be used to optically store retrieve and process information

12 History of Holography

Holography was invented in 1947 by the Hungarian-British physicist Dennis Gabor work for

which he received the Nobel Prize in Physics in 1971 Pioneering work in the field of physics

by other scientists including Mieczysław Wolfke resolved technical issues that previously

had prevented advancement The discovery was an unexpected result of research into

improving electron microscopes at the British Thomson-Houston Company in Rugby

England and the company filed a patent in December 1947 (patent GB685286)

10 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 11 Dennis Gabor

The optical holography did not really advance until the development of the laser in 1960 The

development of the laser enabled the first practical optical holograms that recorded 3D

objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and

Juris Upatnieks at University of Michigan USA

13 Difference between Holography and Photography

Table I Difference between Holography and Photography

1 Allows the recorded scene to be viewed from

a wide range of angles

The Photograph gives only a single

view

2 Same perception of a three-dimensional

image

Photograph is a flat two-dimensional

representation

3 When a hologram is cut in pieces the whole

scene can still be seen in each piece

Photograph is cut in pieces each

piece shows only part of the scene

4 Can only be viewed with very specific forms

of illumination

Can be viewed in a wide range of

lighting conditions

5 Appears to bear no relationship to the scene

which it has recorded

Clearly maps out the light field of the

original scene

11 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

12 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

13 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

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HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

15 | P a g e

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

16 | P a g e

HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

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HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

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HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

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HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

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HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

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HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

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HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 3: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

gratitude to such people in my life who extended their support to me and without whom this project would have ever come into extended to me by various personalities in the successful completion of the project

I owe my first words to Prof PK Jena my faculty Coordinator Asst Professor School of Business SMVDU Katra for his whole-hearted support and encouragement in the conception execution and completion of the report I am grateful to him for imparting the knowledge and expertise

I also want to thank the Dean of College of Management SMVDU Dr D Mukhopadhayay for allowing me to undertake this project

I canlsquot do justice with this project without thanking all those respondents whom I interviewed during this period

HIMANI CHOUDHARY

(2010MBE07)

DECLARATION

3 | P a g e

HOLOGRAPHIC DISPLAYS

It is hereby declared that the Project report on- ldquoConsumer preference towards 3D TV- An

Investigation of Jammu regionrdquo is being submitted by Himani Choudhary 2010MBE07

MBA(BE) 3rd Semester in partial fulfillment of degree of MBA(BE) from SMVDU Katra is

an original work carried out and that no part of this project has been submitted to any other

degreediploma or university The information given in this project is true to the best of my

knowledge

HIMANI CHOUDHARY

(2010MBE07)

INDEX

Page No

CHAPTER 1 INTRODUCTION 10

4 | P a g e

HOLOGRAPHIC DISPLAYS

1 Introduction 10

11 Holography 10

12 History of Holography 10

13 Difference between Holography and Photography 11

14 Holography Working 12

CHAPTER 2 INTRODUCTION TO HOLOGRAPHIC DISPLAYS 15

2 Holographic Displays 15

21 Real time 3-D Display 15

22 Comparison between different Displays 17

232 Depth Perception and Visual Cues 18

233 Quality and Visual Comfort of 3d Displays 20

CHAPTER 3 HOLOGRAPHIC DISPLAY TECHNOLOGY 24

31 Primary goal of the reconstruction 26

32 Hologram calculation 29

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification 29

CHAPTER 4 HOLOGRAPHIC PROCESSING PIPELINE 30

41 Content-Generation 30

42 Views color and depth-information 31

43 Smallest common multiple of the three wavelengths 31

44 Light sources 32

45 Observer tracking (Virtual cameras) 32

46 Transparency 33

47 A holographic video-format 34

48 Hologram-Synthesis 35

49 Hologram-Encoding 36

410 Post-Processing 36

5 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays 37

412 Real-time holography on a PC 38

413 Results 38

CHAPTER 5 APPLICATIONS 39

511 Introduction 39

512 Abstract 40

513 Anisotropic Spinning Mirror 41

52 Apple patent reveals plans for holographic display 42

53 Heliodisplay 43

531 Requirements 44

532 System Includes 44

533 Specifications 44

CHAPTER 6 LITERATURE REVIEW 46

CHAPTER 7 RESEARCH METHODOLOGY 47

71 Title of study 47

72 Objectives 47

73 Research Methodology 47

74 Analysis amp Discussions 48

CHAPTER 8 63

81 DRAWBACKS 63

82 POLICY SUGGESTION 63

83 LIMITATIONS OF STUDY 63

CHAPTER 9 CONCLUSION 64

CHAPTER 10 FUTURE SCOPE 66

101 Future Scope 66

REFERENCES 68

6 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE 68

ABSTRACT

For future 3D TV systems with multi-viewpoint (look around) capability it is not known how

many spatially adjacent images of the same scene ought to be reproduced The display is the

last component in a chain of activity from image acquisition compression coding

transmission and reproduction of 3-D images through to the display itself The scheme for 3-

7 | P a g e

HOLOGRAPHIC DISPLAYS

D display adopted is holography where the image is produced by wavefront reconstruction

volumetric where the image is produced within a volume of space and multiple image

displays where two or more images are seen across the viewing field In an ideal world a

stereoscopic display would produce images in real time that exhibit all the characteristics of

the original scene This would require the wavefront to be reproduced accurately Holography

enables 3-D scenes to be encoded into an interference pattern however this places

constraints on the display resolution necessary to reconstruct a scene Although holography

may ultimately offer the solution for 3DTV the problem of capturing naturally lit scenes will

first have to be solved and holography is unlikely to provide a short-term solution due to

limitations in current enabling technologies However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and

distribution cannot be displayed Multiple image displays take many forms and it is likely

that one or more of these will provide the solution(s) for the first generation of 3DTV

displays

3DTV is regarded by the experts and the general public as the next major step in video

technologies The ghost-like images of remote persons or objects are already depicted in

many futuristic movies both entertainment applications as well as 3D video telephony are

among the commonly imagined utilizations of such a technology As in every product there

are various different technological approaches also in 3DTV By the way 3D technologies

are not new the earliest 3DTV application is demonstrated within a few years after the

invention of 2D TV However earlier 3D video relied on stereoscopy Current work mostly

focuses on advanced variants of stereoscopic principles like goggle-free autostereoscopic

multi-view devices However holographic 3DTV and its variants are the ultimate goal and

will yield the envisioned high-quality ghostlike replicas of original scenes once technological

problems are solved Holography is not based on human perception but targets perfect

recording and reconstruction of light with all its properties If such a reconstruction is

achieved the viewer embedded in the same light distributions the original will of course see

the same scene as the original Holographic 3DTV can be achieved if the holographic

recordings and the associated holographic display can be refreshed in real-time However

due to limitations regarding the pixel sizes such holographic 3DTV displays have a very

small angle of view (about 2 degrees) and therefore far from being satisfactory at present

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

8 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits

CHAPTER 1

INTRODUCTION

1 Introduction

We live today in a communication society where information exchange widely relies on

visual representation it is amazing that most of the screens we are using plenty of hours per

9 | P a g e

HOLOGRAPHIC DISPLAYS

day for work or entertainment get along with a at 2D image Generally complex data can be

interpreted more effectively when displayed in three dimensions In information display

industry three-dimensional (3D) imaging display and visualization are therefore considered

to be one of the key technology developments that will enter our daily life in the near future

Natural perception of depth as in daily life however remains still a challenging task in

display technology as much as for content creation This involves display performance eye

visual acuity and visual perception The purpose of this report is to review current 3D

display technologies and especially how they provide crucial depth cues

11 Holography

Holography (from the Greek whole + writing drawing) is a technique that allows

the light scattered (reflected) from an object to be recorded and later reconstructed so that

when an imaging system (a camera or an eye) is placed in the reconstructed beam an image

of the object will be seen even when the object is no longer present The image changes as

the position and orientation of the viewing system changes in exactly the same way as if the

object were still present thus making the image appear three-dimensional Holography is the

only visual recording and playback process that can record our three-dimensional world on a

two dimensional recording medium and playback the original object or scene to the unaided

eyes as a three dimensional image The image demonstrates complete parallax and depth-of-

field and floats in space either behind in front of or straddling the recording medium The

technique of holography can also be used to optically store retrieve and process information

12 History of Holography

Holography was invented in 1947 by the Hungarian-British physicist Dennis Gabor work for

which he received the Nobel Prize in Physics in 1971 Pioneering work in the field of physics

by other scientists including Mieczysław Wolfke resolved technical issues that previously

had prevented advancement The discovery was an unexpected result of research into

improving electron microscopes at the British Thomson-Houston Company in Rugby

England and the company filed a patent in December 1947 (patent GB685286)

10 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 11 Dennis Gabor

The optical holography did not really advance until the development of the laser in 1960 The

development of the laser enabled the first practical optical holograms that recorded 3D

objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and

Juris Upatnieks at University of Michigan USA

13 Difference between Holography and Photography

Table I Difference between Holography and Photography

1 Allows the recorded scene to be viewed from

a wide range of angles

The Photograph gives only a single

view

2 Same perception of a three-dimensional

image

Photograph is a flat two-dimensional

representation

3 When a hologram is cut in pieces the whole

scene can still be seen in each piece

Photograph is cut in pieces each

piece shows only part of the scene

4 Can only be viewed with very specific forms

of illumination

Can be viewed in a wide range of

lighting conditions

5 Appears to bear no relationship to the scene

which it has recorded

Clearly maps out the light field of the

original scene

11 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

12 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

13 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

14 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

15 | P a g e

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

16 | P a g e

HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

19 | P a g e

HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

20 | P a g e

HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 4: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

It is hereby declared that the Project report on- ldquoConsumer preference towards 3D TV- An

Investigation of Jammu regionrdquo is being submitted by Himani Choudhary 2010MBE07

MBA(BE) 3rd Semester in partial fulfillment of degree of MBA(BE) from SMVDU Katra is

an original work carried out and that no part of this project has been submitted to any other

degreediploma or university The information given in this project is true to the best of my

knowledge

HIMANI CHOUDHARY

(2010MBE07)

INDEX

Page No

CHAPTER 1 INTRODUCTION 10

4 | P a g e

HOLOGRAPHIC DISPLAYS

1 Introduction 10

11 Holography 10

12 History of Holography 10

13 Difference between Holography and Photography 11

14 Holography Working 12

CHAPTER 2 INTRODUCTION TO HOLOGRAPHIC DISPLAYS 15

2 Holographic Displays 15

21 Real time 3-D Display 15

22 Comparison between different Displays 17

232 Depth Perception and Visual Cues 18

233 Quality and Visual Comfort of 3d Displays 20

CHAPTER 3 HOLOGRAPHIC DISPLAY TECHNOLOGY 24

31 Primary goal of the reconstruction 26

32 Hologram calculation 29

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification 29

CHAPTER 4 HOLOGRAPHIC PROCESSING PIPELINE 30

41 Content-Generation 30

42 Views color and depth-information 31

43 Smallest common multiple of the three wavelengths 31

44 Light sources 32

45 Observer tracking (Virtual cameras) 32

46 Transparency 33

47 A holographic video-format 34

48 Hologram-Synthesis 35

49 Hologram-Encoding 36

410 Post-Processing 36

5 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays 37

412 Real-time holography on a PC 38

413 Results 38

CHAPTER 5 APPLICATIONS 39

511 Introduction 39

512 Abstract 40

513 Anisotropic Spinning Mirror 41

52 Apple patent reveals plans for holographic display 42

53 Heliodisplay 43

531 Requirements 44

532 System Includes 44

533 Specifications 44

CHAPTER 6 LITERATURE REVIEW 46

CHAPTER 7 RESEARCH METHODOLOGY 47

71 Title of study 47

72 Objectives 47

73 Research Methodology 47

74 Analysis amp Discussions 48

CHAPTER 8 63

81 DRAWBACKS 63

82 POLICY SUGGESTION 63

83 LIMITATIONS OF STUDY 63

CHAPTER 9 CONCLUSION 64

CHAPTER 10 FUTURE SCOPE 66

101 Future Scope 66

REFERENCES 68

6 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE 68

ABSTRACT

For future 3D TV systems with multi-viewpoint (look around) capability it is not known how

many spatially adjacent images of the same scene ought to be reproduced The display is the

last component in a chain of activity from image acquisition compression coding

transmission and reproduction of 3-D images through to the display itself The scheme for 3-

7 | P a g e

HOLOGRAPHIC DISPLAYS

D display adopted is holography where the image is produced by wavefront reconstruction

volumetric where the image is produced within a volume of space and multiple image

displays where two or more images are seen across the viewing field In an ideal world a

stereoscopic display would produce images in real time that exhibit all the characteristics of

the original scene This would require the wavefront to be reproduced accurately Holography

enables 3-D scenes to be encoded into an interference pattern however this places

constraints on the display resolution necessary to reconstruct a scene Although holography

may ultimately offer the solution for 3DTV the problem of capturing naturally lit scenes will

first have to be solved and holography is unlikely to provide a short-term solution due to

limitations in current enabling technologies However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and

distribution cannot be displayed Multiple image displays take many forms and it is likely

that one or more of these will provide the solution(s) for the first generation of 3DTV

displays

3DTV is regarded by the experts and the general public as the next major step in video

technologies The ghost-like images of remote persons or objects are already depicted in

many futuristic movies both entertainment applications as well as 3D video telephony are

among the commonly imagined utilizations of such a technology As in every product there

are various different technological approaches also in 3DTV By the way 3D technologies

are not new the earliest 3DTV application is demonstrated within a few years after the

invention of 2D TV However earlier 3D video relied on stereoscopy Current work mostly

focuses on advanced variants of stereoscopic principles like goggle-free autostereoscopic

multi-view devices However holographic 3DTV and its variants are the ultimate goal and

will yield the envisioned high-quality ghostlike replicas of original scenes once technological

problems are solved Holography is not based on human perception but targets perfect

recording and reconstruction of light with all its properties If such a reconstruction is

achieved the viewer embedded in the same light distributions the original will of course see

the same scene as the original Holographic 3DTV can be achieved if the holographic

recordings and the associated holographic display can be refreshed in real-time However

due to limitations regarding the pixel sizes such holographic 3DTV displays have a very

small angle of view (about 2 degrees) and therefore far from being satisfactory at present

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

8 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits

CHAPTER 1

INTRODUCTION

1 Introduction

We live today in a communication society where information exchange widely relies on

visual representation it is amazing that most of the screens we are using plenty of hours per

9 | P a g e

HOLOGRAPHIC DISPLAYS

day for work or entertainment get along with a at 2D image Generally complex data can be

interpreted more effectively when displayed in three dimensions In information display

industry three-dimensional (3D) imaging display and visualization are therefore considered

to be one of the key technology developments that will enter our daily life in the near future

Natural perception of depth as in daily life however remains still a challenging task in

display technology as much as for content creation This involves display performance eye

visual acuity and visual perception The purpose of this report is to review current 3D

display technologies and especially how they provide crucial depth cues

11 Holography

Holography (from the Greek whole + writing drawing) is a technique that allows

the light scattered (reflected) from an object to be recorded and later reconstructed so that

when an imaging system (a camera or an eye) is placed in the reconstructed beam an image

of the object will be seen even when the object is no longer present The image changes as

the position and orientation of the viewing system changes in exactly the same way as if the

object were still present thus making the image appear three-dimensional Holography is the

only visual recording and playback process that can record our three-dimensional world on a

two dimensional recording medium and playback the original object or scene to the unaided

eyes as a three dimensional image The image demonstrates complete parallax and depth-of-

field and floats in space either behind in front of or straddling the recording medium The

technique of holography can also be used to optically store retrieve and process information

12 History of Holography

Holography was invented in 1947 by the Hungarian-British physicist Dennis Gabor work for

which he received the Nobel Prize in Physics in 1971 Pioneering work in the field of physics

by other scientists including Mieczysław Wolfke resolved technical issues that previously

had prevented advancement The discovery was an unexpected result of research into

improving electron microscopes at the British Thomson-Houston Company in Rugby

England and the company filed a patent in December 1947 (patent GB685286)

10 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 11 Dennis Gabor

The optical holography did not really advance until the development of the laser in 1960 The

development of the laser enabled the first practical optical holograms that recorded 3D

objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and

Juris Upatnieks at University of Michigan USA

13 Difference between Holography and Photography

Table I Difference between Holography and Photography

1 Allows the recorded scene to be viewed from

a wide range of angles

The Photograph gives only a single

view

2 Same perception of a three-dimensional

image

Photograph is a flat two-dimensional

representation

3 When a hologram is cut in pieces the whole

scene can still be seen in each piece

Photograph is cut in pieces each

piece shows only part of the scene

4 Can only be viewed with very specific forms

of illumination

Can be viewed in a wide range of

lighting conditions

5 Appears to bear no relationship to the scene

which it has recorded

Clearly maps out the light field of the

original scene

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HOLOGRAPHIC DISPLAYS

Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

12 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

13 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

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HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

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HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

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HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

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HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

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HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

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HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

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HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

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HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

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HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

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HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 5: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

1 Introduction 10

11 Holography 10

12 History of Holography 10

13 Difference between Holography and Photography 11

14 Holography Working 12

CHAPTER 2 INTRODUCTION TO HOLOGRAPHIC DISPLAYS 15

2 Holographic Displays 15

21 Real time 3-D Display 15

22 Comparison between different Displays 17

232 Depth Perception and Visual Cues 18

233 Quality and Visual Comfort of 3d Displays 20

CHAPTER 3 HOLOGRAPHIC DISPLAY TECHNOLOGY 24

31 Primary goal of the reconstruction 26

32 Hologram calculation 29

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification 29

CHAPTER 4 HOLOGRAPHIC PROCESSING PIPELINE 30

41 Content-Generation 30

42 Views color and depth-information 31

43 Smallest common multiple of the three wavelengths 31

44 Light sources 32

45 Observer tracking (Virtual cameras) 32

46 Transparency 33

47 A holographic video-format 34

48 Hologram-Synthesis 35

49 Hologram-Encoding 36

410 Post-Processing 36

5 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays 37

412 Real-time holography on a PC 38

413 Results 38

CHAPTER 5 APPLICATIONS 39

511 Introduction 39

512 Abstract 40

513 Anisotropic Spinning Mirror 41

52 Apple patent reveals plans for holographic display 42

53 Heliodisplay 43

531 Requirements 44

532 System Includes 44

533 Specifications 44

CHAPTER 6 LITERATURE REVIEW 46

CHAPTER 7 RESEARCH METHODOLOGY 47

71 Title of study 47

72 Objectives 47

73 Research Methodology 47

74 Analysis amp Discussions 48

CHAPTER 8 63

81 DRAWBACKS 63

82 POLICY SUGGESTION 63

83 LIMITATIONS OF STUDY 63

CHAPTER 9 CONCLUSION 64

CHAPTER 10 FUTURE SCOPE 66

101 Future Scope 66

REFERENCES 68

6 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE 68

ABSTRACT

For future 3D TV systems with multi-viewpoint (look around) capability it is not known how

many spatially adjacent images of the same scene ought to be reproduced The display is the

last component in a chain of activity from image acquisition compression coding

transmission and reproduction of 3-D images through to the display itself The scheme for 3-

7 | P a g e

HOLOGRAPHIC DISPLAYS

D display adopted is holography where the image is produced by wavefront reconstruction

volumetric where the image is produced within a volume of space and multiple image

displays where two or more images are seen across the viewing field In an ideal world a

stereoscopic display would produce images in real time that exhibit all the characteristics of

the original scene This would require the wavefront to be reproduced accurately Holography

enables 3-D scenes to be encoded into an interference pattern however this places

constraints on the display resolution necessary to reconstruct a scene Although holography

may ultimately offer the solution for 3DTV the problem of capturing naturally lit scenes will

first have to be solved and holography is unlikely to provide a short-term solution due to

limitations in current enabling technologies However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and

distribution cannot be displayed Multiple image displays take many forms and it is likely

that one or more of these will provide the solution(s) for the first generation of 3DTV

displays

3DTV is regarded by the experts and the general public as the next major step in video

technologies The ghost-like images of remote persons or objects are already depicted in

many futuristic movies both entertainment applications as well as 3D video telephony are

among the commonly imagined utilizations of such a technology As in every product there

are various different technological approaches also in 3DTV By the way 3D technologies

are not new the earliest 3DTV application is demonstrated within a few years after the

invention of 2D TV However earlier 3D video relied on stereoscopy Current work mostly

focuses on advanced variants of stereoscopic principles like goggle-free autostereoscopic

multi-view devices However holographic 3DTV and its variants are the ultimate goal and

will yield the envisioned high-quality ghostlike replicas of original scenes once technological

problems are solved Holography is not based on human perception but targets perfect

recording and reconstruction of light with all its properties If such a reconstruction is

achieved the viewer embedded in the same light distributions the original will of course see

the same scene as the original Holographic 3DTV can be achieved if the holographic

recordings and the associated holographic display can be refreshed in real-time However

due to limitations regarding the pixel sizes such holographic 3DTV displays have a very

small angle of view (about 2 degrees) and therefore far from being satisfactory at present

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

8 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits

CHAPTER 1

INTRODUCTION

1 Introduction

We live today in a communication society where information exchange widely relies on

visual representation it is amazing that most of the screens we are using plenty of hours per

9 | P a g e

HOLOGRAPHIC DISPLAYS

day for work or entertainment get along with a at 2D image Generally complex data can be

interpreted more effectively when displayed in three dimensions In information display

industry three-dimensional (3D) imaging display and visualization are therefore considered

to be one of the key technology developments that will enter our daily life in the near future

Natural perception of depth as in daily life however remains still a challenging task in

display technology as much as for content creation This involves display performance eye

visual acuity and visual perception The purpose of this report is to review current 3D

display technologies and especially how they provide crucial depth cues

11 Holography

Holography (from the Greek whole + writing drawing) is a technique that allows

the light scattered (reflected) from an object to be recorded and later reconstructed so that

when an imaging system (a camera or an eye) is placed in the reconstructed beam an image

of the object will be seen even when the object is no longer present The image changes as

the position and orientation of the viewing system changes in exactly the same way as if the

object were still present thus making the image appear three-dimensional Holography is the

only visual recording and playback process that can record our three-dimensional world on a

two dimensional recording medium and playback the original object or scene to the unaided

eyes as a three dimensional image The image demonstrates complete parallax and depth-of-

field and floats in space either behind in front of or straddling the recording medium The

technique of holography can also be used to optically store retrieve and process information

12 History of Holography

Holography was invented in 1947 by the Hungarian-British physicist Dennis Gabor work for

which he received the Nobel Prize in Physics in 1971 Pioneering work in the field of physics

by other scientists including Mieczysław Wolfke resolved technical issues that previously

had prevented advancement The discovery was an unexpected result of research into

improving electron microscopes at the British Thomson-Houston Company in Rugby

England and the company filed a patent in December 1947 (patent GB685286)

10 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 11 Dennis Gabor

The optical holography did not really advance until the development of the laser in 1960 The

development of the laser enabled the first practical optical holograms that recorded 3D

objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and

Juris Upatnieks at University of Michigan USA

13 Difference between Holography and Photography

Table I Difference between Holography and Photography

1 Allows the recorded scene to be viewed from

a wide range of angles

The Photograph gives only a single

view

2 Same perception of a three-dimensional

image

Photograph is a flat two-dimensional

representation

3 When a hologram is cut in pieces the whole

scene can still be seen in each piece

Photograph is cut in pieces each

piece shows only part of the scene

4 Can only be viewed with very specific forms

of illumination

Can be viewed in a wide range of

lighting conditions

5 Appears to bear no relationship to the scene

which it has recorded

Clearly maps out the light field of the

original scene

11 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

12 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

13 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

14 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

15 | P a g e

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

16 | P a g e

HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

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HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

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HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

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HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

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HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

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HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

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HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

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HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

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HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

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HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

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HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

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HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

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HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

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HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

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HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

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HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

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HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

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HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

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HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

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HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

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HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 6: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays 37

412 Real-time holography on a PC 38

413 Results 38

CHAPTER 5 APPLICATIONS 39

511 Introduction 39

512 Abstract 40

513 Anisotropic Spinning Mirror 41

52 Apple patent reveals plans for holographic display 42

53 Heliodisplay 43

531 Requirements 44

532 System Includes 44

533 Specifications 44

CHAPTER 6 LITERATURE REVIEW 46

CHAPTER 7 RESEARCH METHODOLOGY 47

71 Title of study 47

72 Objectives 47

73 Research Methodology 47

74 Analysis amp Discussions 48

CHAPTER 8 63

81 DRAWBACKS 63

82 POLICY SUGGESTION 63

83 LIMITATIONS OF STUDY 63

CHAPTER 9 CONCLUSION 64

CHAPTER 10 FUTURE SCOPE 66

101 Future Scope 66

REFERENCES 68

6 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE 68

ABSTRACT

For future 3D TV systems with multi-viewpoint (look around) capability it is not known how

many spatially adjacent images of the same scene ought to be reproduced The display is the

last component in a chain of activity from image acquisition compression coding

transmission and reproduction of 3-D images through to the display itself The scheme for 3-

7 | P a g e

HOLOGRAPHIC DISPLAYS

D display adopted is holography where the image is produced by wavefront reconstruction

volumetric where the image is produced within a volume of space and multiple image

displays where two or more images are seen across the viewing field In an ideal world a

stereoscopic display would produce images in real time that exhibit all the characteristics of

the original scene This would require the wavefront to be reproduced accurately Holography

enables 3-D scenes to be encoded into an interference pattern however this places

constraints on the display resolution necessary to reconstruct a scene Although holography

may ultimately offer the solution for 3DTV the problem of capturing naturally lit scenes will

first have to be solved and holography is unlikely to provide a short-term solution due to

limitations in current enabling technologies However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and

distribution cannot be displayed Multiple image displays take many forms and it is likely

that one or more of these will provide the solution(s) for the first generation of 3DTV

displays

3DTV is regarded by the experts and the general public as the next major step in video

technologies The ghost-like images of remote persons or objects are already depicted in

many futuristic movies both entertainment applications as well as 3D video telephony are

among the commonly imagined utilizations of such a technology As in every product there

are various different technological approaches also in 3DTV By the way 3D technologies

are not new the earliest 3DTV application is demonstrated within a few years after the

invention of 2D TV However earlier 3D video relied on stereoscopy Current work mostly

focuses on advanced variants of stereoscopic principles like goggle-free autostereoscopic

multi-view devices However holographic 3DTV and its variants are the ultimate goal and

will yield the envisioned high-quality ghostlike replicas of original scenes once technological

problems are solved Holography is not based on human perception but targets perfect

recording and reconstruction of light with all its properties If such a reconstruction is

achieved the viewer embedded in the same light distributions the original will of course see

the same scene as the original Holographic 3DTV can be achieved if the holographic

recordings and the associated holographic display can be refreshed in real-time However

due to limitations regarding the pixel sizes such holographic 3DTV displays have a very

small angle of view (about 2 degrees) and therefore far from being satisfactory at present

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

8 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits

CHAPTER 1

INTRODUCTION

1 Introduction

We live today in a communication society where information exchange widely relies on

visual representation it is amazing that most of the screens we are using plenty of hours per

9 | P a g e

HOLOGRAPHIC DISPLAYS

day for work or entertainment get along with a at 2D image Generally complex data can be

interpreted more effectively when displayed in three dimensions In information display

industry three-dimensional (3D) imaging display and visualization are therefore considered

to be one of the key technology developments that will enter our daily life in the near future

Natural perception of depth as in daily life however remains still a challenging task in

display technology as much as for content creation This involves display performance eye

visual acuity and visual perception The purpose of this report is to review current 3D

display technologies and especially how they provide crucial depth cues

11 Holography

Holography (from the Greek whole + writing drawing) is a technique that allows

the light scattered (reflected) from an object to be recorded and later reconstructed so that

when an imaging system (a camera or an eye) is placed in the reconstructed beam an image

of the object will be seen even when the object is no longer present The image changes as

the position and orientation of the viewing system changes in exactly the same way as if the

object were still present thus making the image appear three-dimensional Holography is the

only visual recording and playback process that can record our three-dimensional world on a

two dimensional recording medium and playback the original object or scene to the unaided

eyes as a three dimensional image The image demonstrates complete parallax and depth-of-

field and floats in space either behind in front of or straddling the recording medium The

technique of holography can also be used to optically store retrieve and process information

12 History of Holography

Holography was invented in 1947 by the Hungarian-British physicist Dennis Gabor work for

which he received the Nobel Prize in Physics in 1971 Pioneering work in the field of physics

by other scientists including Mieczysław Wolfke resolved technical issues that previously

had prevented advancement The discovery was an unexpected result of research into

improving electron microscopes at the British Thomson-Houston Company in Rugby

England and the company filed a patent in December 1947 (patent GB685286)

10 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 11 Dennis Gabor

The optical holography did not really advance until the development of the laser in 1960 The

development of the laser enabled the first practical optical holograms that recorded 3D

objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and

Juris Upatnieks at University of Michigan USA

13 Difference between Holography and Photography

Table I Difference between Holography and Photography

1 Allows the recorded scene to be viewed from

a wide range of angles

The Photograph gives only a single

view

2 Same perception of a three-dimensional

image

Photograph is a flat two-dimensional

representation

3 When a hologram is cut in pieces the whole

scene can still be seen in each piece

Photograph is cut in pieces each

piece shows only part of the scene

4 Can only be viewed with very specific forms

of illumination

Can be viewed in a wide range of

lighting conditions

5 Appears to bear no relationship to the scene

which it has recorded

Clearly maps out the light field of the

original scene

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HOLOGRAPHIC DISPLAYS

Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

12 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

13 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

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HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

15 | P a g e

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

16 | P a g e

HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

19 | P a g e

HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

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HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

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HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 7: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE 68

ABSTRACT

For future 3D TV systems with multi-viewpoint (look around) capability it is not known how

many spatially adjacent images of the same scene ought to be reproduced The display is the

last component in a chain of activity from image acquisition compression coding

transmission and reproduction of 3-D images through to the display itself The scheme for 3-

7 | P a g e

HOLOGRAPHIC DISPLAYS

D display adopted is holography where the image is produced by wavefront reconstruction

volumetric where the image is produced within a volume of space and multiple image

displays where two or more images are seen across the viewing field In an ideal world a

stereoscopic display would produce images in real time that exhibit all the characteristics of

the original scene This would require the wavefront to be reproduced accurately Holography

enables 3-D scenes to be encoded into an interference pattern however this places

constraints on the display resolution necessary to reconstruct a scene Although holography

may ultimately offer the solution for 3DTV the problem of capturing naturally lit scenes will

first have to be solved and holography is unlikely to provide a short-term solution due to

limitations in current enabling technologies However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and

distribution cannot be displayed Multiple image displays take many forms and it is likely

that one or more of these will provide the solution(s) for the first generation of 3DTV

displays

3DTV is regarded by the experts and the general public as the next major step in video

technologies The ghost-like images of remote persons or objects are already depicted in

many futuristic movies both entertainment applications as well as 3D video telephony are

among the commonly imagined utilizations of such a technology As in every product there

are various different technological approaches also in 3DTV By the way 3D technologies

are not new the earliest 3DTV application is demonstrated within a few years after the

invention of 2D TV However earlier 3D video relied on stereoscopy Current work mostly

focuses on advanced variants of stereoscopic principles like goggle-free autostereoscopic

multi-view devices However holographic 3DTV and its variants are the ultimate goal and

will yield the envisioned high-quality ghostlike replicas of original scenes once technological

problems are solved Holography is not based on human perception but targets perfect

recording and reconstruction of light with all its properties If such a reconstruction is

achieved the viewer embedded in the same light distributions the original will of course see

the same scene as the original Holographic 3DTV can be achieved if the holographic

recordings and the associated holographic display can be refreshed in real-time However

due to limitations regarding the pixel sizes such holographic 3DTV displays have a very

small angle of view (about 2 degrees) and therefore far from being satisfactory at present

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

8 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits

CHAPTER 1

INTRODUCTION

1 Introduction

We live today in a communication society where information exchange widely relies on

visual representation it is amazing that most of the screens we are using plenty of hours per

9 | P a g e

HOLOGRAPHIC DISPLAYS

day for work or entertainment get along with a at 2D image Generally complex data can be

interpreted more effectively when displayed in three dimensions In information display

industry three-dimensional (3D) imaging display and visualization are therefore considered

to be one of the key technology developments that will enter our daily life in the near future

Natural perception of depth as in daily life however remains still a challenging task in

display technology as much as for content creation This involves display performance eye

visual acuity and visual perception The purpose of this report is to review current 3D

display technologies and especially how they provide crucial depth cues

11 Holography

Holography (from the Greek whole + writing drawing) is a technique that allows

the light scattered (reflected) from an object to be recorded and later reconstructed so that

when an imaging system (a camera or an eye) is placed in the reconstructed beam an image

of the object will be seen even when the object is no longer present The image changes as

the position and orientation of the viewing system changes in exactly the same way as if the

object were still present thus making the image appear three-dimensional Holography is the

only visual recording and playback process that can record our three-dimensional world on a

two dimensional recording medium and playback the original object or scene to the unaided

eyes as a three dimensional image The image demonstrates complete parallax and depth-of-

field and floats in space either behind in front of or straddling the recording medium The

technique of holography can also be used to optically store retrieve and process information

12 History of Holography

Holography was invented in 1947 by the Hungarian-British physicist Dennis Gabor work for

which he received the Nobel Prize in Physics in 1971 Pioneering work in the field of physics

by other scientists including Mieczysław Wolfke resolved technical issues that previously

had prevented advancement The discovery was an unexpected result of research into

improving electron microscopes at the British Thomson-Houston Company in Rugby

England and the company filed a patent in December 1947 (patent GB685286)

10 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 11 Dennis Gabor

The optical holography did not really advance until the development of the laser in 1960 The

development of the laser enabled the first practical optical holograms that recorded 3D

objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and

Juris Upatnieks at University of Michigan USA

13 Difference between Holography and Photography

Table I Difference between Holography and Photography

1 Allows the recorded scene to be viewed from

a wide range of angles

The Photograph gives only a single

view

2 Same perception of a three-dimensional

image

Photograph is a flat two-dimensional

representation

3 When a hologram is cut in pieces the whole

scene can still be seen in each piece

Photograph is cut in pieces each

piece shows only part of the scene

4 Can only be viewed with very specific forms

of illumination

Can be viewed in a wide range of

lighting conditions

5 Appears to bear no relationship to the scene

which it has recorded

Clearly maps out the light field of the

original scene

11 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

12 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

13 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

14 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

15 | P a g e

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

16 | P a g e

HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

19 | P a g e

HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

20 | P a g e

HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

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74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

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Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

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others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

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Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

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Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

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Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

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Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

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buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

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Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

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Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

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type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

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Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

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others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

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If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

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NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

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2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

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CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

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CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

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HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

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CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

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REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

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QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

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Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 8: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

D display adopted is holography where the image is produced by wavefront reconstruction

volumetric where the image is produced within a volume of space and multiple image

displays where two or more images are seen across the viewing field In an ideal world a

stereoscopic display would produce images in real time that exhibit all the characteristics of

the original scene This would require the wavefront to be reproduced accurately Holography

enables 3-D scenes to be encoded into an interference pattern however this places

constraints on the display resolution necessary to reconstruct a scene Although holography

may ultimately offer the solution for 3DTV the problem of capturing naturally lit scenes will

first have to be solved and holography is unlikely to provide a short-term solution due to

limitations in current enabling technologies However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and

distribution cannot be displayed Multiple image displays take many forms and it is likely

that one or more of these will provide the solution(s) for the first generation of 3DTV

displays

3DTV is regarded by the experts and the general public as the next major step in video

technologies The ghost-like images of remote persons or objects are already depicted in

many futuristic movies both entertainment applications as well as 3D video telephony are

among the commonly imagined utilizations of such a technology As in every product there

are various different technological approaches also in 3DTV By the way 3D technologies

are not new the earliest 3DTV application is demonstrated within a few years after the

invention of 2D TV However earlier 3D video relied on stereoscopy Current work mostly

focuses on advanced variants of stereoscopic principles like goggle-free autostereoscopic

multi-view devices However holographic 3DTV and its variants are the ultimate goal and

will yield the envisioned high-quality ghostlike replicas of original scenes once technological

problems are solved Holography is not based on human perception but targets perfect

recording and reconstruction of light with all its properties If such a reconstruction is

achieved the viewer embedded in the same light distributions the original will of course see

the same scene as the original Holographic 3DTV can be achieved if the holographic

recordings and the associated holographic display can be refreshed in real-time However

due to limitations regarding the pixel sizes such holographic 3DTV displays have a very

small angle of view (about 2 degrees) and therefore far from being satisfactory at present

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

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HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits

CHAPTER 1

INTRODUCTION

1 Introduction

We live today in a communication society where information exchange widely relies on

visual representation it is amazing that most of the screens we are using plenty of hours per

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HOLOGRAPHIC DISPLAYS

day for work or entertainment get along with a at 2D image Generally complex data can be

interpreted more effectively when displayed in three dimensions In information display

industry three-dimensional (3D) imaging display and visualization are therefore considered

to be one of the key technology developments that will enter our daily life in the near future

Natural perception of depth as in daily life however remains still a challenging task in

display technology as much as for content creation This involves display performance eye

visual acuity and visual perception The purpose of this report is to review current 3D

display technologies and especially how they provide crucial depth cues

11 Holography

Holography (from the Greek whole + writing drawing) is a technique that allows

the light scattered (reflected) from an object to be recorded and later reconstructed so that

when an imaging system (a camera or an eye) is placed in the reconstructed beam an image

of the object will be seen even when the object is no longer present The image changes as

the position and orientation of the viewing system changes in exactly the same way as if the

object were still present thus making the image appear three-dimensional Holography is the

only visual recording and playback process that can record our three-dimensional world on a

two dimensional recording medium and playback the original object or scene to the unaided

eyes as a three dimensional image The image demonstrates complete parallax and depth-of-

field and floats in space either behind in front of or straddling the recording medium The

technique of holography can also be used to optically store retrieve and process information

12 History of Holography

Holography was invented in 1947 by the Hungarian-British physicist Dennis Gabor work for

which he received the Nobel Prize in Physics in 1971 Pioneering work in the field of physics

by other scientists including Mieczysław Wolfke resolved technical issues that previously

had prevented advancement The discovery was an unexpected result of research into

improving electron microscopes at the British Thomson-Houston Company in Rugby

England and the company filed a patent in December 1947 (patent GB685286)

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HOLOGRAPHIC DISPLAYS

Fig 11 Dennis Gabor

The optical holography did not really advance until the development of the laser in 1960 The

development of the laser enabled the first practical optical holograms that recorded 3D

objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and

Juris Upatnieks at University of Michigan USA

13 Difference between Holography and Photography

Table I Difference between Holography and Photography

1 Allows the recorded scene to be viewed from

a wide range of angles

The Photograph gives only a single

view

2 Same perception of a three-dimensional

image

Photograph is a flat two-dimensional

representation

3 When a hologram is cut in pieces the whole

scene can still be seen in each piece

Photograph is cut in pieces each

piece shows only part of the scene

4 Can only be viewed with very specific forms

of illumination

Can be viewed in a wide range of

lighting conditions

5 Appears to bear no relationship to the scene

which it has recorded

Clearly maps out the light field of the

original scene

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Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

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HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

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HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

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CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

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HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

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HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

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HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

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HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

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HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

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HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

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HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

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HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

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HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

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HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

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HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

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HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 9: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits

CHAPTER 1

INTRODUCTION

1 Introduction

We live today in a communication society where information exchange widely relies on

visual representation it is amazing that most of the screens we are using plenty of hours per

9 | P a g e

HOLOGRAPHIC DISPLAYS

day for work or entertainment get along with a at 2D image Generally complex data can be

interpreted more effectively when displayed in three dimensions In information display

industry three-dimensional (3D) imaging display and visualization are therefore considered

to be one of the key technology developments that will enter our daily life in the near future

Natural perception of depth as in daily life however remains still a challenging task in

display technology as much as for content creation This involves display performance eye

visual acuity and visual perception The purpose of this report is to review current 3D

display technologies and especially how they provide crucial depth cues

11 Holography

Holography (from the Greek whole + writing drawing) is a technique that allows

the light scattered (reflected) from an object to be recorded and later reconstructed so that

when an imaging system (a camera or an eye) is placed in the reconstructed beam an image

of the object will be seen even when the object is no longer present The image changes as

the position and orientation of the viewing system changes in exactly the same way as if the

object were still present thus making the image appear three-dimensional Holography is the

only visual recording and playback process that can record our three-dimensional world on a

two dimensional recording medium and playback the original object or scene to the unaided

eyes as a three dimensional image The image demonstrates complete parallax and depth-of-

field and floats in space either behind in front of or straddling the recording medium The

technique of holography can also be used to optically store retrieve and process information

12 History of Holography

Holography was invented in 1947 by the Hungarian-British physicist Dennis Gabor work for

which he received the Nobel Prize in Physics in 1971 Pioneering work in the field of physics

by other scientists including Mieczysław Wolfke resolved technical issues that previously

had prevented advancement The discovery was an unexpected result of research into

improving electron microscopes at the British Thomson-Houston Company in Rugby

England and the company filed a patent in December 1947 (patent GB685286)

10 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 11 Dennis Gabor

The optical holography did not really advance until the development of the laser in 1960 The

development of the laser enabled the first practical optical holograms that recorded 3D

objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and

Juris Upatnieks at University of Michigan USA

13 Difference between Holography and Photography

Table I Difference between Holography and Photography

1 Allows the recorded scene to be viewed from

a wide range of angles

The Photograph gives only a single

view

2 Same perception of a three-dimensional

image

Photograph is a flat two-dimensional

representation

3 When a hologram is cut in pieces the whole

scene can still be seen in each piece

Photograph is cut in pieces each

piece shows only part of the scene

4 Can only be viewed with very specific forms

of illumination

Can be viewed in a wide range of

lighting conditions

5 Appears to bear no relationship to the scene

which it has recorded

Clearly maps out the light field of the

original scene

11 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

12 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

13 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

14 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

15 | P a g e

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

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HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

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HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

20 | P a g e

HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

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HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

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HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

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HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

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HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

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HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

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HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

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HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

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HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 10: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

day for work or entertainment get along with a at 2D image Generally complex data can be

interpreted more effectively when displayed in three dimensions In information display

industry three-dimensional (3D) imaging display and visualization are therefore considered

to be one of the key technology developments that will enter our daily life in the near future

Natural perception of depth as in daily life however remains still a challenging task in

display technology as much as for content creation This involves display performance eye

visual acuity and visual perception The purpose of this report is to review current 3D

display technologies and especially how they provide crucial depth cues

11 Holography

Holography (from the Greek whole + writing drawing) is a technique that allows

the light scattered (reflected) from an object to be recorded and later reconstructed so that

when an imaging system (a camera or an eye) is placed in the reconstructed beam an image

of the object will be seen even when the object is no longer present The image changes as

the position and orientation of the viewing system changes in exactly the same way as if the

object were still present thus making the image appear three-dimensional Holography is the

only visual recording and playback process that can record our three-dimensional world on a

two dimensional recording medium and playback the original object or scene to the unaided

eyes as a three dimensional image The image demonstrates complete parallax and depth-of-

field and floats in space either behind in front of or straddling the recording medium The

technique of holography can also be used to optically store retrieve and process information

12 History of Holography

Holography was invented in 1947 by the Hungarian-British physicist Dennis Gabor work for

which he received the Nobel Prize in Physics in 1971 Pioneering work in the field of physics

by other scientists including Mieczysław Wolfke resolved technical issues that previously

had prevented advancement The discovery was an unexpected result of research into

improving electron microscopes at the British Thomson-Houston Company in Rugby

England and the company filed a patent in December 1947 (patent GB685286)

10 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 11 Dennis Gabor

The optical holography did not really advance until the development of the laser in 1960 The

development of the laser enabled the first practical optical holograms that recorded 3D

objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and

Juris Upatnieks at University of Michigan USA

13 Difference between Holography and Photography

Table I Difference between Holography and Photography

1 Allows the recorded scene to be viewed from

a wide range of angles

The Photograph gives only a single

view

2 Same perception of a three-dimensional

image

Photograph is a flat two-dimensional

representation

3 When a hologram is cut in pieces the whole

scene can still be seen in each piece

Photograph is cut in pieces each

piece shows only part of the scene

4 Can only be viewed with very specific forms

of illumination

Can be viewed in a wide range of

lighting conditions

5 Appears to bear no relationship to the scene

which it has recorded

Clearly maps out the light field of the

original scene

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HOLOGRAPHIC DISPLAYS

Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

12 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

13 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

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HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

15 | P a g e

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

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HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

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HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

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HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

20 | P a g e

HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

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HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

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HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

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HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

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HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

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HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

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HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

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HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

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HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

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HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

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HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

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HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

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HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

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HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

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HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

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HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

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HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

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HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

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HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 11: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Fig 11 Dennis Gabor

The optical holography did not really advance until the development of the laser in 1960 The

development of the laser enabled the first practical optical holograms that recorded 3D

objects to be made in 1962 by Yuri Denisyuk in the Soviet Union and by Emmett Leith and

Juris Upatnieks at University of Michigan USA

13 Difference between Holography and Photography

Table I Difference between Holography and Photography

1 Allows the recorded scene to be viewed from

a wide range of angles

The Photograph gives only a single

view

2 Same perception of a three-dimensional

image

Photograph is a flat two-dimensional

representation

3 When a hologram is cut in pieces the whole

scene can still be seen in each piece

Photograph is cut in pieces each

piece shows only part of the scene

4 Can only be viewed with very specific forms

of illumination

Can be viewed in a wide range of

lighting conditions

5 Appears to bear no relationship to the scene

which it has recorded

Clearly maps out the light field of the

original scene

11 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

12 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

13 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

14 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

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HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

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HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

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HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

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HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

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HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

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HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

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HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

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HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

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HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

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HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

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HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

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HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 12: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Fig 12 Timeline of Holography

14 Holography Working

Holography is the lens less photography in which an image is captured not as an image

focused on film but as an interference pattern at the film Typically coherent light from a

laser is reflected from an object and combined at the film with light from a reference beam

This recorded interference pattern actually contains much more information that a focused

image and enables the viewer to view a true three-dimensional image which exhibits

parallax That is the image will change its appearance if you look at it from a different angle

just as if you were looking at a real 3D object

Holograms are recorded using a flash of light that illuminates a scene and then imprints on a

recording medium much in the way a photograph is recorded A hologram however

requires a laser as the light source since lasers can be precisely controlled and have a

fixed wavelength unlike white light which contains many different wavelengths

12 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

13 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

14 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

15 | P a g e

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

16 | P a g e

HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

19 | P a g e

HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

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HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

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HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

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HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 13: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Fig 13 Optical arrangement for recording a hologram

Holography also requires a specific exposure time and this can be done using a shutter or by

electronic timing of the laser

1 One beam known as the illumination or object beam is spread using lenses and

directed onto the scene using mirrors in order to illuminate it Some of the light

scattered (reflected) from this illumination falls onto the recording medium

2 The second beam known as the reference beam is also spread through the use of

lenses but is directed so that it doesnt come in contact with the scene and instead

travels directly onto the recording medium

There are several different materials which can be used as the recording medium One of the

most common is silver halide photographic emulsion which uses the same materials as

photographic film but with much higher grain density ie of much higher resolution A layer

of the recording medium is attached to a transparent substrate which is normally glass but

may be plastic

13 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

14 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

15 | P a g e

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

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HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

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HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

19 | P a g e

HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

20 | P a g e

HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

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HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

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HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 14: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Fig 14 Optical arrangement for reconstructing a hologram

On the recording medium the light waves of the two beams intersect and interfere with each

other It is this interference pattern that is imprinted on the holographic medium The pattern

itself is seemingly random as this pattern represents the way in which the scenes

light interfered with the original light source but not the original light source itself The

interference pattern can be said to be an encoded version of the scene requiring a particular

key that is the original light source in order to view its contents This missing key is

provided later by shining a laser identical to the one used to record the hologram onto the

developed film which then recreates a range of the scenes original light

When the original reference beam illuminates the hologram it is diffracted by the recorded

hologram to produce a light field which is identical to the light field which was originally

scattered by the object or objects onto the hologram When the object is removed an observer

who looks into the hologram sees the same image on his retina as he would have seen when

looking at the original scene This image is known as a virtual image

14 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

15 | P a g e

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

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HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

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HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

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HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

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HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

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HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

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HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

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HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

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HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

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HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

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HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

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HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

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HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

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HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

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HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

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HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

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HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

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HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

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HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

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HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

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HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

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HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

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HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

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HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 15: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

CHAPTER 2

INTRODUCTION TO HOLOGRAPHIC DISPLAYS

2 Holographic Displays

21 Real time 3-D Display

Holography will be the next big step in the currently rapid developing market for 3D-stereo

because it is the better option to many fields of applications ie professional 3D-design 3D-

gaming and 3D-television

A display device is an output device for presentation of information in visual form

Holographic display is a display technology that has the ability to provide all four eye

mechanism binocular disparity motion parallax accommodation and convergence

Fig 21 Real time 3-D holographic display

The 3D objects can be viewed without wearing any special glasses and no visual fatigue will

be caused to human eyes

1 Binocular disparity refers to the difference in image location of an object seen by

the left and right eyes resulting from the eyes horizontal separation

2 Parallax is a displacement or difference in the apparent position of an object viewed

along two different lines of sight and is measured by the angle or semi-angle of

inclination between those two lines(principle of parallax to measure distances to

celestial objects including to the Moon the Sun and to stars beyond the Solar

System)

15 | P a g e

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

16 | P a g e

HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

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HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

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HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

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HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

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HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

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HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

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HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

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HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

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HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

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HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

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HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

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HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

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HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

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HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 16: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

3 Accommodation is the process by which the vertebrate eye changes optical power to

maintain a clear image (focus) on an object as its distance changes

4 convergence is the simultaneous inward movement of both eyes toward each other

usually in an effort to maintain single binocular vision when viewing an object

Fig 22 Evolution pattern of displays

16 | P a g e

HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

19 | P a g e

HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

20 | P a g e

HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 17: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

22 Comparison between different Displays

Table II Comparison between different Displays

1 CRT PLASMA LCD LED HOLOGRAPHIC

2 Peak brightness

fair

good image

brightness

Increased

image

brightness

very bright

image and

deep blacks

Bright images

observered

3 Best contrast

ratio

Good contrast

ratio

Lower

contrast ratio

High contrast

ratio with

deep blacks

Good contrast ratio

4 Good at

tracking motion

good at tracking

motion (fast

moving images)

Not as good

at tracking

motion

Good at

tracking

motion

Better than others

with eye tracking

system

5 Least expensive expensive

(comparable

size)

More

expensive

Expensive

than LCDrsquos

Most expensive

6 No high altitude

use issues

Does not

perform as well

at higher

altitudes

No high

altitude use

issues

No high

altitude use

issues

No high altitude

use issues

23 Generation encoding and presentation of content on holographic displays in real

time

231 Introduction

When considering that we live today in a communication society where information

exchange widely relies on visual representation it is amazing that most of the screens we are

using plenty of hours per day for work or entertainment get along with a at 2D image

Generally complex data can be interpreted more effectively when displayed in three

dimensions In information display industry three-dimensional (3D) imaging display and

visualization are therefore considered to be one of the key technology developments that will

17 | P a g e

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

19 | P a g e

HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

20 | P a g e

HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 18: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

enter our daily life in the near future Natural perception of depth as in daily life however

remains still a challenging task in display technology as much as for content creation

Acceptance of 3D displays it is all the more important to address human factor issues at the

best This involves display performance eye visual acuity and visual perception The

purpose of this report is to review current 3D display technologies and especially how they

provide crucial depth cues In particular motion parallax and consistent

accommodationconvergence cues which become essential for 3D desktop displays intended

for longer use at short viewing distances When eyewear (passive anaglyph or polarization

active LCD-shutter glasses) is needed the displays are called stereoscopic and

autostereoscopic displays require no bothersome glasses The latter type is realized by

creating a fixed viewing zone for each eye (parallax-barrier or lenticular) or more advanced is

combined with tracking for eye detection and viewing zone movement

232 Depth Perception and Visual Cues

The human visual system relies on a large number of cues for estimating distance depth and

shape of any objects located in the three-dimensional space of the surrounding For optimum

visual comfort all depth cues delivered by a 3D display have to be both mutually linked and

consistent with natural viewing In our discussion however we concentrate on the interaction

of accommodation and convergence because providing well-matched focus and disparity cues

is still an unsolved issue for most of the known 3D display systems

Fig 23 Overview and classification of depth cues

18 | P a g e

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

19 | P a g e

HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

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HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

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HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 19: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Visual depth cues

Visual depth cues can be classified into monocular and binocular cues Monocular depth cues

are subdivided into pictorial depth cues and motion cues Even at images can provide static

depth cues such as interposition linear perspective relative and known size texture gradient

heights in picture plane light and shadow distribution and aerial perspective these so-

called pictorial depth cues have been applied in visual arts for centuries Motionbased cues

involve shifts on the retinal image and are induced by relative movements between observer

and objects Among them are motion parallax kinetic depth effect and dynamic occlusion

Motion-based cues play an important role for depth perception particularly in static scenery

motion-parallax provides a fast and reliable depth estimate

Oculomotor depth cues

A fixation of near targets evokes three oculomotor responses accommodation convergence

and pupillary constriction which is in combination referred to as the ocular near triad

Primary purpose of the interaction is to provide both sharp and comfortable binocular single

vision

Accommodation and monocular acuity

Accommodation is the mechanism by which the human eye alters its optical power to hold

objects at different distances into sharp focus on the retina The power change is induced by

the ciliary muscles which steepen the crystalline lens curvature for objects at closer

distances When an object of interest is fixated by the eye the accommodation is adjusted

such that a sharp image is perceived onto the retina Full accommodation response requires a

minimum fixation time of one second or longer But the human eye can tolerate a certain

amount of retinal defocus without readjusting accommodation although the criteria for

goodness of focus depend on the observed object and vary from individual to individual In

optometry the corresponding optical power difference is called the ocular depth of focus It is

related to image space and usually given in diopter

1 Pupil size- As the pupil serves as a variable aperture stop of the eye it controls the

luminous flux and quality of the retinal image by balancing out the effects of

diffraction aberration and depth of focus The depth of focus is generally influenced

19 | P a g e

HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

20 | P a g e

HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

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HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 20: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

by the size of the pupil which is in turn mainly affected by the luminance level of

the target Moreover the pupil constricts when focused and converged at a near

object

2 Contrast and spatial frequency of the target- Accommodation response is triggered

by retinal image blur but apart from a minimum fixation time the amount of

accommodation depends on contrast and spatial frequency of the target too Objects

having low contrast or low spatial frequencies represent a weaker stimulus for

accommodation because the retinal image may tolerate a bit more defocus than for an

object having fine high-contrast details

3 Aberrations- The eye is not a perfect optical system however there are

monochromatic as well as chromatic errors which vary individually The merit of

accommodation can be impaired in the presence of aberrations such as defocus or

astigmatism But even with an ideally corrected eye the inherent spherical aberration

will in part diminish the eyes performance especially when the pupil becomes larger

at lower luminance levels

Convergence and stereoscopic acuity

Since the human eyes are horizontally separated each eye sees a slightly different perspective

of a natural scene The retinal images are thus slightly different with so-called crossed or

uncrossed disparity for objects in front or behind the fixation point respectively Stereopsis is

based on the different perspective of the two retinal images which provides a major cue for

relative depth perception

233 Quality and Visual Comfort Of 3d Displays

a) Types of Displays

1 Binocular displays

These displays utilize the conventional stereo principle that is delivering two views of

a scene to the viewers left and right eye Per frame only one set of images is

presented Binocular separation of the views is created by multiplexing methods

20 | P a g e

HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 21: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

2 Multi-view displays

Despite still being stereoscopic multi-view displays create a discrete set of

perspective views per frame and distribute them across the viewing field This gives

in the first place viewing freedom for one or more observer

3 Integral imaging displays

Integral imaging displays make use of a set of 2D elemental images taken with

different perspective to create a 3D image

4 Volumetric displays

In true volumetric displays each point of a scene is created at its actual position in

space which can be realized by either directing laser beams or layered images on

moving screens or by employing focused or intersecting laser beams that create voxel-

emitting dots via fluorescence or scattering

5 Holographic displays

Holography is a diffraction-based coherent imaging technique in which a 3D scene

can be reproduced from a two-dimensional screen having a complex amplitude

transparency (amplitude and phase values) Holographic displays reconstruct the wave

field of a 3D scene in space by modulating coherent light eg with a spatial light

modulator Because of its superior capabilities real-time holography is commonly

considered the ideal 3D technique

b) Crucial depth cues

Because of the ongoing boom in 3D displays and the awareness of potential limitations

involved with the different technologies it is not surprising that the investigation of human

factors and visual comfort is an active area of research There is a vast number of specific

studies and general reviews on this topic while most of them deal with stereoscopic displays

Though some of the following factors may affect viewing comfort considerably the

discussion of typical stereoscopic artifacts such as binocular rivalry (excessive disparity)

frame cancellation (near-edge cut-off for objects with front depth) shear distortion

(perspective distortion with viewpoint changing) keystone distortion (unnatural vertical

disparity) binocular crosstalk (ghost images) cardboard effect (few discrete depth planes) is

21 | P a g e

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 22: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

beyond the scope of this review especially as most of these imperfections can be handled

with careful content preparation and suited display implementations

Based on our experience natural full-parallax motion cues and consistent oculomotor cues of

vergence and accommodation are likely to be the most decisive factors for a comfortable 3D

viewing experience This is particularly relevant to displays with short observer distance such

as desktop monitors notebooks or hand-held devices

c) Natural motion parallax

The term motion parallax refers to the effect that the retinal images of objects located in

front or behind the fixation point moves in different direction and speed across the retina as a

relative movement between observer and environment occurs Objects closer to the observer

than the fixation point appear to move faster and in opposite direction to the movement of the

observer whereas objects farther away move slower and in the same direction While this

enables the viewer to look around objects at the same time it provides a strong cue to relative

depth perception

Fig 24 Comparison between natural viewing (left) and stereoscopic viewing with a 3D stereo display (right)

22 | P a g e

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

23 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 23: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

For normal viewing an object (blue cube) is seen by both eyes The eyes converge towards

the object with a convergence angle 1048576 The human vision system merges the two images seen

by the eyes and deduces a depth information The convergence is one depth cue The other

depth cue is accommodation The eye lens will focus on the object and thereby optimize the

perceived contrast Both depth cues provide the same depth information The situation of

normal viewing also applies to holographic displays as they mimic a real existing object by

reconstructing the light wavefront that would be generated by a real existing object

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HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

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HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

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HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

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HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

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HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

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HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

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HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

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HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

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HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

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HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

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HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

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HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

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HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

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HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

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412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

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HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

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HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

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HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

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HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

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HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

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HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 24: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

CHAPTER 3

HOLOGRAPHIC DISPLAY TECHNOLOGY

3 Holographic

The fundamental concept is rather simple when considering holography from an information

point of- view As all human visual acuity and perception is limited by the capabilities of the

eye and its subsequent image processing in the brain When considering the human vision

system regarding to where the image of a natural environment is received by a viewer it

becomes clear that only a limited angular spectrum of any object contributes to the retinal

image In fact it is limited by the pupils aperture of some millimeters If the positions of both

eyes are known it therefore would be wasteful to reconstruct a holographic scene or object

that has an extended angular spectrum as it is common practice in classical holography The

key idea of solution to electro-holography is to reconstruct a limited angular spectrum of the

wave field of the 3D object which is adapted in size to about the humans eye entrance pupil

The highest priority is to reconstruct the wave field at the observers eyes and not the three-

dimensional object itself The designated area in the viewing plane ie the virtual Viewing

Window from which an observer can see the proper holographic reconstruction is located at

the Fourier plane of the holographic display The holographic code (ie the complex

amplitude transmittance) of each scene point is encoded on a designated area on the hologram

that is limited in size This area in the hologram plane is called a Sub-Hologram There is one

sub-hologram per scene point but owing to the diffractive nature of holography sub-

holograms of different object points are super-positioned without loss of information

Binocular parallax is provided by delivering different holographic reconstructions with the

proper difference in perspective to left and right eye respectively For this the techniques of

spatial or temporal multiplexing can be utilized Fortunately dynamic or real-time video

holography offers an additional degree of freedom with regard to quick hologram update By

incorporating a tracking system which detects the eye positions of one or more viewers very

fast and precisely and repositions the viewing window accordingly a dynamic 3D

holographic display providing full motion parallax can be realized This way all problems

involved with the classic approach to holography can be circumvented

24 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 25: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Fig 31 Schematic principle of the sub-hologram concept (side view) L+ positive lens SLM spatial light modulator SH sub-hologram

These conventional holograms provide a very large viewing-zone on the one hand but need a

very small pixel-pitch (ie around 1 μm) to be reconstructed on the other hand The viewing-

zonersquos size is directly defined by the pixel-pitch because of the basic principle of holography

the interference of diffracted light When the viewing-zone is large enough both eyes

automatically sense different perspectives so they can focus and converge at the same point

even multiple users can independently look at the reconstruction of the 3D scene

Fig 32 (a) using the conventional approach and (b) Only the essential information is calculated when using Sub-Holograms

25 | P a g e

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 26: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

31 Primary goal of the reconstruction

The fundamental difference between conventional holographic displays and our approach is

in the primary goal of the holographic reconstruction In conventional displays the primary

goal is to reconstruct the object This object can be seen from a viewing region that is larger

than the eye separation

In contrast thereto in our approach the primary goal is to reconstruct the wavefront that

would be generated by a real existing object at the eye positions creating virtual viewing

windows at the 3D object The reconstructed object can be seen if the observer eyes are

positioned in or close to at least one virtual viewing window (VW) A VW is the Fourier

transform of the hologram and is located in the Fourier plane of the hologram The size of the

VW is limited to one diffraction order of the Fourier transform of the hologram Green

spherical wavefronts are for the essential information and the red spherical wavefronts are for

the wasted information The observer will not notice that the wavefront information outside

the VW is not present or not useful as long as each eye pupil is in a VW

The VW has to be at least as large as the eye pupil and at most as large as a diffraction order

in the observer plane This ensures that light from only one diffraction order will reach the

VW Light emanating from other diffraction orders of the reconstructed object point is

outside the VW and is therefore not seen by the eye

The size of the SH depends on the distance of the point from the SLM The size of the SH is

the same as the size of the VW for a point halfway between SLM and VW The VW has a

typical size of the order of 10 mm

The essential idea of our approach is that for a holographic display the highest priority is to

reconstruct the wavefront at the eye position that would be generated by a real existing object

and not the to reconstruct the object itself

26 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 27: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Fig 33 Wavefront information that is generated in the conventional approach (red) and the essential wavefront information (green) that is

actually needed at a virtual viewing window (VW)

The essential wavefront information is encoded in a sub-hologram (SH) on the SLMCoherent

light transmitted by the lens illuminates the SLM The SLM is encoded with a hologram that

reconstructs an object point of a 3D object An object with only one object point and its

associated spherical wavefront is shown It is evident that more complex objects with many

object points are possible by superposing the individual holograms

The conventional approach to holographic displays generates the wavefront that is drawn in

red The wavefront information of the object point is encoded on the whole SLM The

modulated light reconstructs the object point which is visible from a region that is much

larger than the eye pupil As the eye perceives only the wavefront information that is

transmitted by the eye pupil most of the information is wasted As an example a holographic

display for TV application with an observer distance of 2 m and a viewing angle of plusmn30deg

requires the wavefront information to be present in a zone of 2 m width Only a small fraction

of this zone is occupied by the eye pupils of an observer with an aperture of ca 5 mm each

Most of the wavefront information is not seen and therefore wasted In other words much

effort is done to project light into regions where no observer eye is

27 | P a g e

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 28: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

In contrast thereto our approach limits the wavefront information to the essential

information The correct wavefront is provided only at the positions where it is actually

needed ie at the eye pupils

Virtual Window (VW) which is positioned close to an eye pupil The wavefront information

is encoded only in a limited area on the SLM the so-called sub-hologram (SH) The position

and size of the SH is determined geometrically by projecting the VW through the object point

onto the SLM This is indicated by the green lines from the edges of the VW through the

object point to the edges of the SH Only the light emitted in the SH will reach the VW and is

therefore relevant for the eye Light emitted outside the SH and encoded with the wavefront

information of the object point would not reach the VW and would therefore be wasted

Fig 34 Super-positioning multiple Sub-Holograms a hologram representing the whole scene is generated and reconstructed at the Viewing-

Windowrsquos location in space

Assuming to have a 40 inch SLM (800 mm x 600 mm) one observer is looking at the display

from 2 meters distance the viewing-zone will be +- 10deg in horizontal and vertical direction

the content is placed inside the range of 1m in front and unlimited distance behind the

hologram the hologram reconstructs a scene with HDTV-resolution (1920x1080 scene-

points) and the wavelength is 500 nm

28 | P a g e

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 29: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

32 Hologram calculation

The hologram is calculated from the object point-by-point The SH of each object point is

calculated and appropriately sized and positioned The final hologram is generated by

superposing the SHs of all object points

The number of calculations is larger as there are more object points than object layers This is

counterbalanced by the fact that the SHs are smaller This method can be efficiently executed

on a graphics card in real time ie with 25 frames per second for an object in HDTV

resolution

33 Hologram based on full-parallax Sub-Holograms and tracked Viewing-Windows

Specification

Table III Hologram Based on full Parallax Sub-Holograms

1 SLM pixel-pitch 100 μm

2 Viewing-Window Viewing-zone 10 mm x 10 mm gt 700 mm x 700 mm

3 Depth Quantisation infin

4 Hologram-resolution in pixels 8000 x 6000 asymp 48 MPixel

5 Memory for one hologram-frame

(2x4 byte per hologram-pixel)

2 x 384 MByte

(two holograms one for each eye)

6 Float-operations for one

monochrome frame

2 x 182 Giga Flops

(by using the direct Sub-Hologram

calculation)

29 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 30: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

CHAPTER 4

HOLOGRAPHIC PROCESSING PIPELINE

Fig 41 A general overview of our holographic processing pipeline

This defines the holographic software pipeline which is separated into the following

modules Beginning with the content creation the data generated by the content-generator

will be handed over to the hologram-synthesis where the complex-valued hologram is

calculated Then the hologram-encoding converts the complex-valued hologram into the

representation compatible to the used spatial light modulator (SLM) the holographic display

Finally the post-processor mixes the different holograms for the three color-components and

two or more views dependent on the type of display so that at the end the resulting frame can

be presented on the SLM

41 Content-Generation

For holographic displays two main types of content can be differentiated At first there is

real-time computer-generated (CG) 3D-content like 3D-games and 3D-applications Secondly

there is real-life or life action video-content which can be live-video from a 3D-camera 3D-

TV broadcast channels 3D-video files BluRay or other media

For most real-time CG-content like 3D-games or 3D-applications current 3D-rendering

Application Programming Interface (APIs) utilizing graphics processing units (GPUs) are

convenient The most important ones are Microsoftrsquos Direct3D and the OpenGL-API

30 | P a g e

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 31: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

42 Views color and depth-information

In this approach for each observer two views are created one for each eye The difference to

3D-stereo is the additional need of exact depth-information for each view ndash usually supplied

in a so-called depth-map or z-map bound to the color-map The two views for each observer

are essential to provide the appropriate perspective view each eye expects to see Together

they provide the convergence-information The depth information provided with each viewrsquos

depth-map is used to reconstruct a scene-point at the proper depth so that each 3D scene-

point will be created at the exact position in space thus providing a userrsquos eye with the

correct focus-information of a natural 3D scene The views are reconstructed independently

and according to user position and 3D scene inside different VWs which in turn are placed at

the eye-locations of each observer

45 Smallest common multiple of the three wavelengths

A larger synthetic wavelength means that there are more blaze-matched wavelengths which

can be selected Admittedly this simplifies the light source selection issue but it comes with

an increased profile depth which is quite unfavorable in terms of the efficiency sensitivity to

profile depth errors Therefore the smallest common multiple of three RGB (red blue green)

wavelengths which corresponds to the smallest possible synthetic wavelength is the best

choice

Fig 42 Smallest common multiple of three RGB (red blue green) wavelengths

31 | P a g e

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 32: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

46 Light sources

A main criterion for content generation is the availability of high-quality light sources with

sufficient coherence beam quality and power that match as best as possible Due to the phase

error and diffraction efficiency sensitivity this will be the key point Furthermore the size

cost and system integration are issues that have to be considered as well

45 Observer tracking (Virtual cameras)

The display is equipped with an eye position detector and tracking means Hence it is

possible to reduce the size of a VW to the size of approximately an eye pupil Two VWs ie

one for the left eye and one for the right eye are always located at the positions of the

observer eyes The two VWs may be generated by temporal or spatial multiplexing

Additional VWs for several observers may be generated in the same way Thus the viewing

angle of the reconstructed object can be enlarged without increasing the resolution of the

SLM

The eye position detector and tracking means always locate the VWs at the observer eyes

There are two alternatives for the tracking means

1 Light source tracking

Shifting the position of the light source also shifts the position of the VW The

position of the light source does not have to be shifted mechanically A light

source may be an activated pixel in an additional LCD that is illuminated by a

homogenous backlight By activating a pixel at the desired position on the

LCD the light source can be shifted electronically without mechanical

movement

2 Beam-steering element

With a beam-steering element after the SLM the optical path from the light

source to the SLM can be kept constant This is advantageous with respect to

light efficiency and lens aberrations The beam-steering element deflects the

light after the SLM and directs the light towards the observer eyes

32 | P a g e

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 33: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Additionally the locations of the SHs on the SLM are also adapted to the positions of the

observer eyes The current system is capable to track simultaneously up to 4 viewers in real-

time

Fig 43 Images captured by the tracking cameras (left and right view of a stereo camera)

46 Transparency

An interesting effect which is a unique feature of holographic processing pipeline is the

reconstruction of scenes including (semi-) transparent objects Transparent objects in the

nature like glass or smoke influence the light coming from a light-source regarding

intensity direction or wavelength In nature eyes can focus both on the transparent object or

the objects behind which may also be transparent objects in their parts

Such a reconstruction can be achieved straightforward using solution to holography and has

been realized in display demonstrators the following way Multiple scene-points placed in

different depths along one eye-display-ray can be reconstructed simultaneously This means

super-positioning multiple SHs for 3D scene points with different depths and colors at the

same location in the hologram and allowing the eye to focus on the different scene-points at

their individual depths The scene-point in focal distance to the observerrsquos eye will look

sharp while the others behind or in front will be blurred

Principle of generating multiple 3D scene-points at the same position in the hologram-plane

but with different depths is based on the use of multiple content data layers Each layer

contains scene-points with individual color depth and alpha-information These layers can be

seen as ordered depth-layers where each layer contains one or more objects with or without

33 | P a g e

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 34: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

transparency The required total number of layers corresponds to the maximal number of

overlapping transparent 3D scene points in a 3D scene

Fig 44 (a) Multiple scene-points along one single eye-display-ray are reconstructed consecutively and can be used to enable transparency-

effects (b) Exemplary scene with one additional layer to handle transparent scene-points (more layers are possible)

This scheme is compatible with the approach to creating transparency-effects for 2D and

stereoscopic 3D displays The difference on one hand is to direct the results of the blending

passes to the appropriate layerrsquos color-map instead of overwriting the existing color On the

other hand the generated depth-values are stored in the layerrsquos depth-map instead of

discarding them

Finally the layers have to be preprocessed to convert the colors of all scene-points and

influences from other scene-points behind When looking at such a reconstruction the

background-object will be darker when occluded by the half-transparent white object in

foreground but both can be seen and focused

The data handed over to the hologram-synthesis contains multiple views with multiple layers

each containing scene-points with just color and depth-values Later SHs will be created only

for valid scene-points ndash only the parts of the transparency-layers actively used will be

processed

47 A holographic video-format

There are two ways to play a holographic video By directly loading and presenting already

calculated holograms or by loading the raw scene-points and calculating the hologram in real-

time

34 | P a g e

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 35: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

The first option has one big disadvantage The data of the hologram-frames must not be

manipulated by compression methods like video-codecrsquos only lossless methods are suitable

Real-time hologram calculation enables to use state-of-the-art video-compression

technologies like H264 or MPEG-4 which are more or less lossy dependent on the used

bitrate but provide excellent compression rates The losses have to be strictly controlled

especially regarding the depth-information which directly influences the quality of

reconstruction

Simple video-frame format stores all important data to reconstruct a video-frame including

color and transparency on a holographic display This flexible format contains all necessary

views and layers per view to store colors alpha-values and depth-values as sub-frames

placed in the video-frame Additional meta-information stored in an xml-document or

embedded into the video-container contains the layout and parameters of the video-frames

the holographic video-player needs for creating the appropriate hologram This information

for instance describes which types of sub-frames are embedded their location and the

original camera-setup especially how to interpret the stored depth-values for mapping them

into the 3D-coordinate-system of the holographic display

This approach enables to reconstruct 3D color-video with transparency-effects on

holographic displays in real-time The meta-information provides all parameters the player

needs to create the hologram It also ensures the video is compatible with the camera-setup

and verifies the completeness of the 3D scene information (ie depth must be available)

48 Hologram-Synthesis

This performs the transformation of multiple scene-points into a hologram where each scene-

point is characterized by color lateral position and depth This process is done for each view

and color-component independently while iterating over all available layers ndash separate

holograms are calculated for each view and each color-component

For each scene-point inside the available layers a Sub-Hologram SH is calculated and

accumulated onto the hologram H which consists of complex values for each hologram-pixel

ndash a so called hologram-cell or cell Only visible scene-points with an intensity brightness b

of bgt0 are transformed this saves computing time especially for the transparency layers

which are often only partially filled

35 | P a g e

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 36: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

49 Hologram-Encoding

Encoding is the process to prepare a hologram to be written into a SLM the holographic

display SLMs normally cannot directly display complex values that means they cannot

modulate and phase-shift a light-wave in one single pixel the same time But by combining

amplitude-modulating and phase-modulating displays the modulation of coherent light-

waves can be realized The modulation of each SLM-pixel is controlled by the complex

values (cells) in a hologram By illuminating the SLM with coherent light the wave-front of

the synthesized scene is generated at the hologram-plane which then propagates into the VW

to reconstruct the scene

Different types of SLM can be used for generating holograms some examples are SLM with

amplitude-only-modulation (detour-phase modulation) using ie three amplitude values for

creating one complex value SLM with phase-only-modulation by combining ie two phases

or SLM combining amplitude and phase-modulation by combining one amplitude- and one

phase-pixel Latter could be realized by a sandwich of a phase and an amplitude-panel6

So dependent of the SLM-type a phase-amplitude phase-only or amplitude-only

representation of our hologram is required Each cell in a hologram has to be converted into

the appropriate representation After writing the converted hologram into the SLM each

SLM-pixel modulates the passing light-wave by its phase and amplitude

410 Post-Processing

The last step in the processing chain performs the mixing of the different holograms for the

color-components and views and presents the hologram-frames to the observers There are

different methods to present colors and views on a holographic display

One way would be the complete time sequential presentation (a total time-multiplexing)

Here all colors and views are presented one after another even for the different observers in a

multi-user system By controlling the placement of the VWs at the right position

synchronously with the currently presented view and by switching the appropriate light-

source for λ at the right time according to the currently shown hologram encoded for λ all

observers are able to see the reconstruction of the 3D scene

In general the post-processing is responsible to format the holographic frames to be

presented to the observers

36 | P a g e

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

37 | P a g e

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

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HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

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HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

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HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

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HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

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HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

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HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

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HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

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HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

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HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

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HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

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HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 37: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

411 Illumination issues for holographic displays

We continue our discussion with an exemplary design of the focusing element of a backlight

unit for holographic displays The backlight of a holographic display has to be coherent and

must have a defined or well-known phase and amplitude distribution To put it into

holographic terms this wave corresponds to the reference wave which is required to

reconstruct the object encoded in the hologram

The approach to holography requires coherence in the illumination only over a hologram area

which equals approximately the maximum sub-hologram size This simplifies the demand to

the used optical components since not a single light source must serve for the entire 20-inch

or even larger sized hologram Instead a light source matrix can be used to illuminate the

hologram By doing so the depth of the backlight can be dramatically decreased since the

closest distance between the point source and the focusing element is limited by the

maximum f-number which is achievable by classic optics

The proposed backlight unit for holographic displays is shown schematically It consists

basically of a point source array (PSA) at which the three RGB-colors are emitting in a time-

sequential manner The PSA is followed by a multi-order DOE-lens (Diffractive Optical

Elements) array which is placed at focal distance behind the sources Thereby the light

coming from one point source is collimated to a size corresponding to the clear aperture of an

individual DOE The entire hologram panel is then illuminated by a `quasi-planar wave

which is actually composed of an entire set of planar wavefronts

Fig 45 Schematic explosion view of an illumination unit (backlight) for direct-view holographic displays

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HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

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HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

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HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

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HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 38: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

412 Real-time holography on a PC

Motivation for using a PC to drive a holographic display is manifold A standard graphics-

board to drive the SLMs using DVI (Digital User Interface) can be used which supports the

large resolutions needed Furthermore a variety of off-the-shelf components are available

which get continuously improved at rapid pace The creation of real-time 3D-content is easy

to handle using the widely established 3D-rendering APIs OpenGL and Direct3D on the

Microsoft Windows platform In addition useful SDKs and software libraries providing

formats and codecrsquos for 3D-models and videos are provided and are easily accessible

When using a PC for intense holographic calculations the main processor is mostly not

sufficiently powerful Even the most up-to-date CPUs do not perform calculations of high-

resolution real-time 3D holograms fast enough ie an Intel Core i7 achieves around 50

GFlops So it is obvious to use more powerful components ndash the most interesting are

graphics processing units (GPUs) because of their huge memory bandwidth and great

processing power despite some overhead and inflexibilities As an advantage their

programmability flexibility and processing power have been clearly improved over the last

years

413 Results

The solution is capable of driving scaled up display hardware (higher SLM resolution larger

size) with the correspondingly increased pixel quantity

The high-resolution full frame rate GPU-solution runs on a PC with a single NVIDIA GTX

285 FPGA-solution uses one Altera Stratix III to perform all the holographic calculations

Transparency-effects inside complex 3D scenes and 3D-videos are supported Even for

complex high-resolution 3D-content utilizing all four layers the frame rate is constantly

above 60Hz Content can be provided by a PC and esp for the FPGA-solution by a set-top

box a gaming console or the like ndash which is like driving a normal 2D- or 3D-display

Even with the current solutions the calculation of full-parallax color holograms in real-time is

achievable and has been tested internally

38 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 39: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

CHAPTER 5

APPLICATIONS

51 Interactive 360ordm Light Field Display

Fig 51 Interactive 360ordm Image Using Light Field Display

511 Introduction

The Graphics Lab at the University of Southern California has designed an easily

reproducible low-cost 3D display system with a form factor that offers a number of

advantages for displaying 3D objects in 3D The display is

1 autostereoscopic - requires no special viewing glasses

2 omnidirectional - generates simultaneous views accommodating large numbers of

viewers

3 interactive - can update content at 200Hz

The system works by projecting high-speed video onto a rapidly spinning mirror As the

mirror turns it reflects a different and accurate image to each potential viewer Our rendering

algorithm can recreate both virtual and real scenes with correct occlusion horizontal and

vertical perspective and shading

While flat electronic displays represent a majority of user experiences it is important to

realize that flat surfaces represent only a small portion of our physical world Our real world

is made of objects in all their three-dimensional glory The next generation of displays will

begin to represent the physical world around us but this progression will not succeed unless

39 | P a g e

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 40: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

it is completely invisible to the user no special glasses no fuzzy pictures and no small

viewing zones

512 Abstract

We describe a set of rendering techniques for an autostereoscopic light field display able to

present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the

display The display consists of a high-speed video projector a spinning mirror covered by a

holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals

The display uses a standard programmable graphics card to render over 5000 images per

second of interactive 3D graphics projecting 360-degree views with 125 degree separation

up to 20 updates per second

Fig 52 Interactive 360ordm light field display apparatus

We describe the systems projection geometry and its calibration process and we present a

multiple-center-of-projection rendering technique for creating perspective-correct images

from arbitrary viewpoints around the display Our projection technique allows correct vertical

perspective and parallax to be rendered for any height and distance when these parameters are

known and we demonstrate this effect with interactive raster graphics using a tracking

system to measure the viewers height and distance We further apply our projection

technique to the display of photographed light fields with accurate horizontal and vertical

parallax We conclude with a discussion of the displays visual accommodation performance

and discuss techniques for displaying color imagery

40 | P a g e

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 41: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Fig 53 Image Using Light Field Display

513 Anisotropic Spinning Mirror

Previous volumetric displays used a spinning diffuse plane to scatter light in all directions but

could not recreate view-dependent effects such as occlusion Instead we use an anisotropic

holographic diffuser bonded onto a first surface mirror Horizontally the mirror is sharply

specular to maintain a 125 degree separation between views Vertically the mirror scatters

widely so the projected image can be viewed from multiple heights

Fig 54 Anisotropic Spinning Mirror

This surface spins synchronously relative to the images being displayed by the projector We

use the PC video output rate as the master signal The projectors FPGA decodes the current

frame rate and interfaces directly to an Animatics SM3420D Smart Motor As the mirror

rotates up to 20 times per second persistence of vision creates the illusion of a floating object

at the center of the mirror

41 | P a g e

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 42: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

52 Apple patent reveals plans for holographic display

A recently granted patent reveals that Apple the company behind the iPod and iPhone has

been working on a new type of display screen that produces three dimensional and even

holographic images without the need for glasses

The technology could be used to produce a new generation of televisions computer monitors

and cinema screens that would provide viewers with a more realistic experience The system

relies upon a special screen that is dotted with tiny pixel-sized domes that deflect images

taken from slightly different angles into the right and left eye of the viewer By presenting

images taken from slightly different angles to the right and left eye this creates a stereoscopic

image that the brain interprets as three-dimensional

Apple also proposes using 3D imaging technology to track the movements of multiple

viewers and the positions of their eyes so that the direction the image is deflected by the

screen can be subtly adjusted to ensure the picture remains sharp and in 3D The patent

claims this technology would also create images that appear to be holographic because of the

ability to track the observer movements An exceptional aspect of the invention is that it can

produce viewing experiences that are virtually indistinguishable from viewing a true

hologram Such a pseudo-holographic image is a direct result of the ability to track and

respond to observer movements By tracking movements of the eye locations of the observer

the left and right 3D sub-images are adjusted in response to the tracked eye movements to

produce images that mimic a real hologram The invention can accordingly continuously

project a 3D image to the observer that recreates the actual viewing experience that the

observer would have when moving in space around and in the vicinity of various virtual

objects displayed therein This is the same experiential viewing effect that is afforded by a

hologram

Sky has also launched a 3D TV channel while many movies are now being filmed in 3D for

viewing at the cinema Apples patent however has now raised speculation that the computer

giant may be aiming to branch into the 3D domain by looking to abolish the need for glasses

and even go further by offering the chance for holographic films Holographic movies

however would require new filming techniques currently not being used by the movie

industry to ensure actors are filmed from multiple angles

42 | P a g e

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 43: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

It proposes using holographic acceleration ndash where the image moves faster relative to the

observers own movement so they would only need to walk in a small arc to see all the way

around the holographic object Its easy to imagine things like amazing 3D textbooks and

instructional videos 3D gaming on an iPad would be an incredibly immersive gaming

experience

Fig 55 holographic display of upcoming iPhone 5

53 Heliodisplay

Heliodisplay technology allows for various platforms and applications for generating a new

medium accepting the projection of video or images into free-space All heliodisplays are

free-space there is no glass or surface to project on Therefore the holographic projection is

truly floating in mid-air Depending on your specific application custom design a solution

using free-space technology from 5 to 300 solutions In many cases standard heliodisplay

products that project both 102 images that allow for life-size projection are sufficient in size

for displaying hologram people in mid-air However sometimes there is a need for

something truly unique Heliodisplay enterprise solutions provide various options not

available in the standard product lineup and solution tool-kit ranging from tele-presence

military targeting smart marketing portals virtual holo assistants to virtual air-touch

monitors

Heliodisplay projection system can hidden in furniture inside a wall hallway or

opening designed to project video products information people in mid-air (102 diagonal

form factor) It requires no additional hardware or software and works with regular content

43 | P a g e

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 44: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

No training required to use it however just like with most video equipment proper planning

and setup are important Connect the video cable flip a switch and see video in mid-air

531 Requirements

A location that has controlled lighting and preferably not a bright backdrop to help in

increase contrast (like any projector) If you can turn on a switch and connect a cable

(Plug-and-Play) you can use a heliodisplay

532 System Includes

Heliodisplay Tower Unit (creates the air) air projector (projects image onto air) power

cables and video cables to connect to your content source (standard VGA or RCA

connection) Plug into your PC laptop Mac DVD etc no need to buy anything else

Fig 56 Mid-air image formed using the heliodisplay

533 Specifications

1 Free-space virtual display with virtual air-touch control

2 Max image measures 102 inches (259 cm) diagonally 80 inches (200 cm) tall and 60

inches (150 cm) wide

3 Heliodisplays work on any power source 90-240V 50 or 60 Hz

4 No special programming required connect with a standard video cable as with any

display

44 | P a g e

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 45: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

5 Allow air touch screen interactivity just as you would with any touch screen but in

mid-air (XP PC with USB required)

6 Heliodisplay is part of a complete two-piece solution (cylinder and projection unit)

7 Weighs approximately 70lbs or 31kg and can be setup by one person by placing the

unit on the floor plugging in the power cord and turning the on button

8 Heliodisplay uses air to project into air no fogs special liquids or chemical are used

9 Eco-friendly (280 watts) power consumption

10 Images can be seen 180 degrees from the front or by providing an extra projection

module can be seen from both sides-360 degrees

45 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 46: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

CHAPTER 6

LITERATURE REVIEW

In the year of 2007 lsquoPhilip Benzie John Watson Phil Surman Ismo Rakkolainen Klaus

Hopf Hakan Urey Ventseslav Sainov and Christoph von Kopylowrsquo did a study entitled as

lsquoA Survey of 3DTV Displays Techniques and Technologiesrsquo through which he found that

ldquoThe display is the last component in a chain of activity from image acquisition

compression coding transmission and reproduction of 3-D images through to the display

itself Holography may ultimately offer the solution for 3DTV the problem of capturing

naturally lit scenes will first have to be solved and holography is unlikely to provide a short-

term solution due to limitations in current enabling technologies Liquid crystal digital

micromirror optically addressed liquid crystal and acoustooptic spatial light modulators

(SLMs) have been employed as suitable spatial light modulation devices in holography

Liquid crystal SLMs are generally favored owing to the commercial availability of high fill

factor high resolution addressable devices However the principal disadvantages of these

displays are the images are generally transparent the hardware tends to be complex and non-

Lambertian intensity distribution cannot be displayed Multiple image displays take many

forms and it is likely that one or more of these will provide the solution(s) for the first

generation of 3DTV displays

Another study by lsquoHari Kalva Lakis Christodoulou Liam Mayron Oge Marques and Borko

Furhtrsquo entitled as lsquoChallenges and opportunities in video coding for 3D TVrsquo and with this

paper he explored the challenges and opportunities in developing and deploying 3D TV

services The study found that the 3D TV services can be seen as a general case of the multi-

view video that has been receiving a significant attention lately The study concluded that the

keys to a successful 3D TV experience are the availability of content the ease of use the

quality of experience and the cost of deployment Recent technological advances have made

possible experimental systems that can be used to evaluate the 3D TV services

46 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 47: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

CHAPTER 7

RESEARCH METHODOLOGY

71 Title of study ldquoConsumer towards 3D TV- An Investigation of Jammu Regionrdquo

72 O BJECTIVES

1 To review status of holography in 3D TV

2 To study acceptance of 3D TV among consumers

73 RESEARCH METHODOLOGY

Exploratory Study

Sample Size 51 Consists of Number of Male = 25 Number of Female= 26

Sample Description

The entire respondents are knowledge of brand and they have gone for shopping of

different types of products Therefore the sample is heterogeneous in nature

a) Primary Data Collection

b) Secondary Data Collection

Primary Data Collection - Questionnaire survey was used for data collection from the

primary source of data The Questionnaire is in general form with question in sequential

order The Questionnaire was constructed so to elicit information regarding the brand

preference among adolescents conducted in different areas

Secondary Data Collection - Publication in Journals Information from Websites and

books

47 | P a g e

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 48: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

74 ANALYSIS amp DISCUSSIONS

FREQUENCY TABLE

type

Frequency Percent Valid PercentCumulative

Percent

Valid simple TV 14 275 275 275

LCD 17 333 333 608

plasma 7 137 137 745

LED 12 235 235 980

3d 1 20 20 1000

Total 51 1000 1000

Out of 51 respondents 275 people have simple television set at their home 333

people have LCD 137 people have plasma TV and 2people have 3D TV

48 | P a g e

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 49: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Price

Frequency Percent Valid PercentCumulative

Percent

Valid 10000-20000 13 255 255 255

20000-30000 36 706 706 961

others 2 39 39 1000

Total 51 1000 1000

Out of 51 respondents 255 people have a TV worth Rs 10000- 20000 706 people

have a TV worth Rs 20k-30k and 39 people have their TV other than the above

mentioned range

Spending

Frequency Percent Valid Percent Cumulative Percent

Valid 10000-20000 4 78 78 78

20000-30000 20 392 392 471

49 | P a g e

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

50 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

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Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

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type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

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Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

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others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

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If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

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NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

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2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

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HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

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HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

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HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

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HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

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HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

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QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

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HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 50: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

others 27 529 529 1000

Total 51 1000 1000

Out of 51 respondents 78 people are willing to pay a price of about 10K-20K for their new television sets 392 people are willing to pay 20k-30k and 529 people are willing to pay a price other than the above mentioned

Quality

Frequency Percent Valid Percent Cumulative Percent

Valid yes 49 961 961 961

no 2 39 39 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

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type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

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HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

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others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

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HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

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NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

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HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

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HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 51: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 961 people feel that picture quality wise television should be a superb experience and just 39 people disagree to this statement

watched3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 33 647 647 647

no 18 353 353 1000

Total 51 1000 1000

51 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 52: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 647 people have watched 3D movie in theater and 353 have

not experienced the 3D movie effects

Experience

Frequency Percent Valid PercentCumulative

Percent

Valid 17 333 333 333

very good 18 353 353 686

good 12 235 235 922

okay 4 78 78 1000

Total 51 1000 1000

52 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

53 | P a g e

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

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HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

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HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

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HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

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HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

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HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 53: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Out of those 33 respondents who have experienced 3D movie 353 people experienced

it very good 235 experienced it as good and 78 people experienced it as okay

Liking

Frequency Percent Valid PercentCumulative

Percent

Valid be a viewer of a movieshow

24 471 471 471

feel it happening in front of you

27 529 529 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

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HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

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NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

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HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 54: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Out of those 51 respondents 529 people wanted to experience 3D and 471 just

wanted to stick to the older technology

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Total 51 1000 1000

54 | P a g e

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

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HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

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HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

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HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

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HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

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HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

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HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

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HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

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HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

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HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 55: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

buy3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 44 863 863 863

no 7 137 137 1000

Out of those 51 respondents 863 wanted to buy the 3D television and 137 did not wanted to have 3D technology in their television sets

mobiles3D

Frequency Percent Valid Percent Cumulative Percent

Valid yes 38 745 745 745

no 13 255 255 1000

Total 51 1000 1000

55 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

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HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 56: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 745 wanted to have their mobiles phones to have 3D technology too 255 did not wanted 3D to get incorporated in mobile phones because it can be misused by children

FamilyIncome

Frequency Percent Valid Percent Cumulative Percent

Valid lt25000 7 137 137 137

250000-350000 12 235 235 373

350000-450000 18 353 353 725

above 450000 14 275 275 1000

Total 51 1000 1000

56 | P a g e

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 57: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Out of 51 respondents 137 people have a family income of less than Rs 25000 235 people have a family income of Rs 25k-35k 353 people have a family income of 35k-45k and 275 people have a family income above 45k

TYPE BUY3D CROSSTABULATION

Countbuy3D

Totalyes no

type simple TV 11 3 14

LCD 14 3 17

plasma 7 0 7

LED 11 1 12

3d 1 0 1

Total 44 7 51

Out of 51 respondents 14 people had a simple TV out of which 11 wanted to buy 3D TV 17

people had LCD TV at their home out of which 14 wanted to buy 3D TV 7 people had

plasma TV and all of them wanted to have 3D TV 12 people had LED TV out of those 12

people 11 wanted to have 3D TV Just one person had a 3D TV and also wanted to have

another 3D TV on his next purchase

57 | P a g e

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

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HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 58: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

type buy3D price Crosstabulation

Count

Price

buy3D

Totalyes no

10000-20000 Type simple TV 6 2 8

LCD 1 2 3

plasma 1 0 1

LED 1 0 1

Total 9 4 13

20000-30000 Type simple TV 4 1 5

LCD 13 1 14

plasma 6 0 6

LED 9 1 10

3d 1 0 1

Total 33 3 36

others Type simple TV 1 1

LED 1 1

Total 2 2

Respondents who have their current TV in the price range of 10k-20k following observations were made There are 8 People who have simple TV out of which 6 people wanted to buy 3D TV 3 people have LCD out of which just 1 wanted to buy a 3D TV Just 1 person owes a plasma TV and wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

58 | P a g e

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

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HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 59: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Respondents who have their current TV in the price range of 20k-30k following observations were made There are 5 People who have simple TV out of which 4 people

wanted to buy 3D TV 14 people have LCD out of which 13 wanted to buy a 3D TV 6 people have plasma TV and all of them wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

Respondents who have their current TV in the price range above 30k following observations were made 1 person had simple TV and also wanted to buy a 3D TV Just 1 person had LED TV and wanted to buy a 3D TV

TYPE BUY3D PRICE SPENDING CROSSTABULATION

Count

spending price

buy3D

Totalyes no

10000-20000 10000-20000 type simple TV 2 1 3

Total 2 1 3

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 0 3

LCD 1 2 3

Total 4 2 6

20000-30000 type simple TV 4 4

LCD 7 7

LED 2 2

3d 1 1

Total 14 14

59 | P a g e

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 60: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

others 10000-20000 type simple TV 1 1 2

plasma 1 0 1

LED 1 0 1

Total 3 1 4

20000-30000 type simple TV 0 1 1

LCD 6 1 7

plasma 5 0 5

LED 7 1 8

Total 18 3 21

others type simple TV 1 1

LED 1 1

Total 2 2

The table above reveals the ability of a person to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and both of them wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

6 respondents had their TV in price range of 10k-20k and out of those 6 people 3 had simple TV and all of those 3 people wanted to have 3D TV 3 people had LCD and out of those 3 just 1 wanted a 3D TV

14 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

60 | P a g e

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 61: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

If a person is willing to pay more than 30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and out of those 3 people 3people wanted a 3D TV

21 respondents had their current TV in the range of 20-30k and 18 of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

TYPE BUY3D PRICE SPENDING MOBILES3D CROSSTABULATION

Count

mobiles3

D spending price

buy3D

Totalyes no

YES 10000-20000 10000-20000 type simple TV 1 1

Total 1 1

20000-30000 type plasma 1 1

Total 1 1

20000-30000 10000-20000 type simple TV 3 3

LCD 1 1

Total 4 4

20000-30000 type simple TV 4 4

LCD 7 7

LED 1 1

Total 12 12

others 10000-20000 type simple TV 1 1

LED 1 1

Total 2 2

20000-30000 type LCD 6 6

plasma 4 4

LED 6 6

Total 16 16

others type simple TV 1 1

LED 1 1

Total2

2

61 | P a g e

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 62: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

NO 10000-20000 10000-20000 type simple TV 1 1 2

Total 1 1 2

20000-30000 10000-20000 type LCD 2 2

Total 2 2

20000-30000 type LED 1 1

3d 1 1

Total 2 2

others 10000-20000 type simple TV 0 1 1

plasma 1 0 1

Total 1 1 2

20000-30000 type simple TV 0 1 1

LCD 0 1 1

plasma 1 0 1

LED 1 1 2

Total 2 3 5

The table above reveals the willingness to have 3D technology in their mobile phones too with their willingness to spend some amount on their new TV set with the price range of their current TV and their willingness to buy a 3D TV

Responses of respondents who wanted to have a 3D technology in their mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

1 respondents had simple TV in price range of 10k-20k and also wanted to buy a 3D TV

1 person had a plasma TV in the range of 20-30k and wanted to buy 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

4 respondents had their TV in price range of 10k-20k and all of them wanted to have 3D TV

12 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

62 | P a g e

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 63: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

2 respondents had their TV in price range of 10k-20k and both of them wanted a 3D TV

16 respondents had their current TV in the range of 20-30k and all of them wanted to buy 3D TV

2 respondents had their current TV in the range of above 30k and both of them wanted to buy 3D TV

Responses of respondents who did not wanted to have a 3D technology in their

mobile phones are as under

If a person is willing to pay 10k-20k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and just 1 person wanted to buy a 3D TV

If a person is willing to pay 20k-30k on the new TV set the following observations were made

2 respondents had simple TV in price range of 10k-20k and one of them wanted to have 3D TV

2 respondents had their current TV in the range of 20-30k and both of them wanted to buy 3D TV

If a person is willing to pay more than 30k on the new TV set the following observations were made

2 respondents had their TV in price range of 10k-20k and just one of them wanted a 3D TV

5 respondents had their current TV in the range of 20-30k and 2 of them wanted to buy 3D TV

63 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 64: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

CHAPTER 8

81 DRAWBACKS

1 Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode

of visual communications

2 3D TV is much more expensive than other television sets which repell the customers

to buy it

3 Lack of knowledge about the functions and advantages of 3D TV

82 POLICY SUGGESTION

1 People who wanted to buy 3D TV did not wanted to pay more so the manufacturer

should make the TV a bit cheaper

2 People were ignorant of the fact that what actually the 3D TV is so the policy

suggestion is the people should be made aware of the latest technology and its

advantages by advertising or any other means

83 LIMITATIONS OF STUDY

1 The study was restricted only to Jammu region

2 Every consumer did not filled the questionnaire up to the mark they tried to mark the

answers blindly without reading the questions

3 Time limit was less for the research

64 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 65: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

CHAPTER 9

CONCLUSION

High-quality 3-D video is regarded by the general public as the ultimate viewing experience

The objective is well-understood and has been depicted in many popular fiction movies the

target is a magical and somewhat mysterious optical replica of an object that is visually

indistinguishable from its original (except perhaps in size) Such 3-D video technology will

have many applications and more than that it will have a significant social impact by deeply

affecting our daily lives Although the goal is clear and its impact is somewhat predictable

there is still a long way to go before we will have widespread commercial high-quality 3-D

products However researchers are working with increasing interest on various elements of

3-D video technologies

3D TV is the next major step in video technologies The ghost-like images of remote persons

or objects are already depicted in many futuristic movies both entertainment applications as

well as 3D video telephony are among the commonly imagined utilizations of such a

technology As in every product there are various different technological approaches also in

3DTV 3D technologies are not new the earliest 3DTV application is demonstrated within a

few years after the invention of 2D TV However earlier 3D video relied on stereoscopy

Current work mostly focuses on advanced variants of stereoscopic principles like goggle-free

autostereoscopic multi-view devices

However holographic 3DTV and its variants are the ultimate goal and will yield the

envisioned high-quality ghostlike replicas of original scenes once technological problems are

solved Viewers experience a motion-sickness-like feeling as a consequence of such

mismatches This is the major reason which kept 3D from becoming a popular mode of visual

communications However recent advances in end-to-end digital techniques minimized such

problems Holography is not based on human perception but targets perfect recording and

reconstruction of light with all its properties If such a reconstruction is achieved the viewer

embedded in the same light distributions the original will of course see the same scene as the

original

Applications of 3D video technologies to different fields like medicine dentistry navigation

cultural exhibits art science education etc in addition to primary application of

65 | P a g e

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 66: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

entertainment and communications will revolutionarize the way we interact with visual data

and will bring many benefits It is envisioned that future 3DTV systems will decouple the

capture and display steps 3D scenes will be captured by some means like multicamera

systems and this data will then be converted to abstract 3D representation using computer

graphics techniques The display will then access this abstract data to generate the 3D video

to the observer

The study found out that people were really excited for purchasing 3D TV but did not wanted

to pay more this could be due to the fact that the research was restricted to Jammu region

only so the data may be biased

66 | P a g e

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 67: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

CHAPTER 10

FUTURE SCOPE

101 Future Scope

1 New technologies in the area of GPUs like Direct3D 11 with the newly

introduced Compute-Shaders and OpenGL 34 in combination with OpenCL

to improve the efficiency and flexibility of GPU-solution

2 Developers working on realistically natural viewing can be mimicked

3 VHDL-designs (VHSIC hardware description language) will be optimized for

the development of dedicated holographic ASICs (application-specific

integrated circuit)

4 Development or adaption of suitable formats for streaming into existing game-

or application-engines will be another focus

5 Future Technology ndash in military and war deception Virtual Sales Presentation

Corporate Meetings Without Travel Record Yourself for Future Great

Grandchildren Holographic Tourism Virtual Reality Training and Mind

Conditioning Pilot Training Augmenting and Holographic Assistance

6 Lowering of cost of key components and further advancement in the field of

holographic display

67 | P a g e

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 68: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

REFERENCES

1 httpenwikipediaorgwikiHolography

2 httpenwikipediaorgwikiInterference_(optics)

3 httplinkaiporglinkPSI723772370S1

4 httpwwwintelcomsupportprocessorssbcs-023143htm

5 httpwwwbusiness-sitesphilipscom3dsolutionshomeindexpage

[6] httpenwikipediaorgwikiShader

6[7] httpenwikipediaorgwikiParallax

[8] httpwwwnvidiacomobjectcuda_home_newhtml

7[9] httpgpgpuorgabout

8[10] httpenwikipediaorgwikiHolographic_interferometry

68 | P a g e

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 69: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

QUESTIONNAIRE

PROFILE OF THE RESPONDENTS

Name of the Respondentshelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Agehelliphelliphelliphelliphelliphelliphellip Qualificationhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Type of family Nuclearhelliphelliphelliphelliphelliphelliphelliphellip Jointhelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Family Income lt25000helliphellip 25k -35khelliphelliphellip 35k-45khelliphelliphelliphellip above 45khelliphelliphellip

Qs1 What kind of Television set you have in your home

(a) Normal simple TV (b) LCD (c) Plasma (d) LED (e) 3D

Qs2 What is the price range of your television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) others(specify)helliphelliphelliphellip

Qs3 How much would you like to spend when you will purchase a new television set

(a) 0-10k (b) 10k-20k (c) 20k-30k (d) 30k-40 (d) above 40k

Qs4 Do you feel that picture quality wise television should be a superb experience

(a) Yes (b) No

Qs5 Have you ever been to watch a 3-D movie with the goggles they provided you

(a) Yes (b) No

Qs6 If yes how was your experience

(a) Very good (b) Good (c) Okay (d) Bad (e) Very Bad

Qs7 You would like to

(a) Be a viewer of a movieshow (b) Feel it happening in front of you

Qs8 If you television set gets 3-D technology incorporated in it would you like to buy it

(a) Yes (b) No

69 | P a g e

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display
Page 70: Holographic Displays REPORT

HOLOGRAPHIC DISPLAYS

Qs9 If yes or No give reasons to justify your answer

helliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphelliphellip

Qs10 Do you want your mobile phones to have a 3-D technology too

(a) Yes (b) No

70 | P a g e

  • 2010-2012
  • JAMMU AND KASHMIR
  • 2010MBE07
  • ACKNOWLEDGEMENT
  • 511 Introduction 39
  • 512 Abstract 40
  • 511 Introduction
  • 512 Abstract
  • We describe a set of rendering techniques for an autostereoscopic light field display able to present interactive 3D graphics to multiple simultaneous viewers 360 degrees around the display The display consists of a high-speed video projector a spinning mirror covered by a holographic diffuser and FPGA circuitry to decode specially rendered DVI video signals The display uses a standard programmable graphics card to render over 5000 images per second of interactive 3D graphics projecting 360-degree views with 125 degree separation up to 20 updates per second
  • Fig 52 Interactive 360ordm light field display apparatus
  • We describe the systems projection geometry and its calibration process and we present a multiple-center-of-projection rendering technique for creating perspective-correct images from arbitrary viewpoints around the display Our projection technique allows correct vertical perspective and parallax to be rendered for any height and distance when these parameters are known and we demonstrate this effect with interactive raster graphics using a tracking system to measure the viewers height and distance We further apply our projection technique to the display of photographed light fields with accurate horizontal and vertical parallax We conclude with a discussion of the displays visual accommodation performance and discuss techniques for displaying color imagery
  • Fig 53 Image Using Light Field Display