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Transcript of 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
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-
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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
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
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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)
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
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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
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
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
-
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)
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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
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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
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
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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
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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
-
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
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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
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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
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
-
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
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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)
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
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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
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
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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
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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
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)
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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
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
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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
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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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
-
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
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
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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
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
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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)
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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
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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
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
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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
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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
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
-
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
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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
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
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
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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
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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
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
-
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
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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)
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
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
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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
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- 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
-
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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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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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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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
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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
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
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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
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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
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
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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
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
-
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
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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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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
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
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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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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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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
-
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
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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
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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
-
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
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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
-
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
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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
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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
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
-
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
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
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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
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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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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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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
-
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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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
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
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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
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
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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
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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
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
-
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
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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
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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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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
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
-
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
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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
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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
-
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
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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
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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
-
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
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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
-
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
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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
-
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
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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
-
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
-
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
-
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
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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
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
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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
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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
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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
-
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
-
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
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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
-
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
-
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
-
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
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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
-
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
-
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
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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
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
-
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
-
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
-
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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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
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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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
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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
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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
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
-
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
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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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
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
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
-
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
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
-
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
-
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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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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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
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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
67 | P a g e
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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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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
-
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
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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
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
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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
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
-
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
-
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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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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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
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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
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
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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
-
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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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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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
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-