3D Display Edited

8/9/2019 3D Display Edited

1/25

3D DISPLAYS


2/25

What is 2D?

2D means the object that has two

dimensions, i.e. height and width.

What is 3D? 3D is a kindle of sense organexperience which means threedimensional, i.e. something thathas width, height and depth.

Introduction


3/25


4/25

Binocular cuesprovide depth information whenviewing a scene with both eyes using"

*tereopsis+onvergence

*hadow *tereopsis

(f these various cues, only convergence,

accommodation and familiar si&e provide absolutedistance information. 'll other cues are relative.


5/25

Techniques forAchieving 3D


6/25

nag yph

In an anaglyph, the two images are superimposed throughtwo lters, one red and one cyan. -lasses with colored ltersin each eye separate the images by cancelling the lter colorout and rendering complementary color black.

'rchetypal 3D glasses

'n anaglyph image


7/25

Polarization Method

wo images are projected and superimposed onto samescreen through di/erent polari&ing lters. )/ect is achieved

by wearing eyeglasses containing a pair of polari&ing lteroriented di/erently

' %ealD 3Dglasses


8/25

Eclipse Method

' shutter blocks light from each appropriate eye whenthe converse eye0s image is projected on the screenwhich alternates between left and right images

+rystal)ye shutterglasses


9/25

Autostereoscopy

It doesnt require any type of glasses or headgearand works on following two devices:-

Parallax Barrier

It consist of layer of material with series of

precision slit, allowing each eye to see a di/erentset of pixels, creating a sense of parallax.

!enticular Arrays

It uses a 2D array of small lenses to capture a

3D scene and is capable of creating window likedisplays that reproduce objects and scenes life1si&e, with full parallax and perspective shift.


10/25

"onstruction


11/25

' 3D display is any display device capable ofconveying three1dimensional images to the viewer.

Glasses

AutostereoscopicDisplay3DT

v!

"olography

3D DisplayDevice


12/25

#ypes o$ 3D Displays

*tereoscopicDisplay

'uto *tereoscopicDisplay

olographicDisplay

olumetric Display


13/25

%tereoscopic Display

*tereoscopic 3D displays show a di/erentimage to each eye.

In stereoscopic display human need glassesto see movie.

-lasses are available in various types . 'smany company developing glasses there ismany types of glasses are available inmarket.


14/25

Metho# To $apture %i#eo &or StereoscopicDisplay

Object


15/25

Active ShutterGlasses

&iltere#Glasses

#ypes o$ &lasses


16/25

A'#( %#E)E(%"(PI"DI%P!A*

'uto *tereoscopic 3D Displays Dohis 4ithout he 5eed 6or 'ny

*pecial -lasses (r (ther ead -earand work on either $arallax 7arrier or8enticular 'rray.


17/25

Wor+ing


18/25

,olographic Display

It has ability to provide all four eyemechanism" binocular disparity,motion parallax, accommodationand convergence.

3D objects can be viewed withoutany special glasses.

5o visual fatigue


19/25


20/25

he computer sends the image to the projector. heprojector generates light beams which form the image on

the screen.

4hen the user touches the screen, a tactile membrane lmreacts to these movements, generating electrical impulsesthat are sent back to the computer. he computer

interprets the received impulses and modies theprojected image according to the information.

#ethod for +omputer -eneratedolography:-

"o-puter &enerated

,olography


21/25

he projector is usually located behind the screen andmust be placed a certain angle above or below the user9s

line of sight to avoid the da&&ling the user. herefore, itmust be trape&oidal projector, so it can compensate for

the deforming of the images at this angle ofdisplacement.


22/25

olu-etric Displays

hey form a visual representation ofan object in three physicaldimensions, as opposed to the planarimage of traditional screens thatsimulate depth through a number ofdi/erent visual e/ects.

In Multiplanar #isplays , whichhave mutiple display planes stackedup.

In (otating Panel #isplays, arotating panel sweeps out a volume.

o project light dots in air, an infraredlaser is focused on the destination inspace, generating a small bubble ofplasma which emits visible light.


23/25

#ypes

%/ept01olu-e display*wept1surface or :swept1volume:! is a volumetric display in

which the three1dimensional image is formed by illuminating arapidly moving display surface, which may be:macroscopically: physical e.g., a spinning di/user! orotherwise.

%tatic 1olu-ehey create imagery without any macroscopic moving parts

in the image volume. It is unclear if the rest of the system mustremain stationary for membership in this display class to be

viable.#o-ography

omography1based volumetric displays create 31D images

using a tomography approach by using multiple projectors torender a 31D image.


24/25

Application o$ 3D Display

#echniues; -aming; )xhibitions, conferences; +onventions, fairs

; *how rooms;#ovies; 3D presentations )


25/25

#han+

*ou....

3D Display Edited

Documents

Transcript of 3D Display Edited