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3-DIMENSIONAL

TELEVISION

Presented By

Sabeel Zeashan - 04084065

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The evolution of visual media such as cinema and television is

one of the major hallmarks of our modern civilization. In

many ways, these visual media now define our modern life

style. Many of us are curious: what is our life style going to be

in a few years? What kind of films and television are we going

to see? Although cinema and television both evolved over

decades, there were stages, which, in fact, were once seen as

revolutions:

1) at first, films were silent, then sound was added;

2) cinema and television were initially black-and-white, then

color was introduced;

3) computer imaging and digital special effects have been the

latest major novelty.

Introduction

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3D Video Processing

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1990 To present

1970 To 1980

1913 To 1960

1844 To 1900

Availability of 3D content for TV in all marketA number of 3D movies were released in the IMAX format during

the 1990s and two of the popular ones were Into the Deep and

Wings of Courage.. Invented by Chris Condon along with Allan silliphant

developed Stereovision a 3D technology using a 35mm film strip

on which two images are pressed together alongside the other

Invented By William van Doren Kelley

Worlds first 3d movie using anaglyph technology, employing 3D

TV glasses with 2 dissimilar coloured lenses.

Invented by David Brewster

One of the first recorded instruments with an ability to photograph

objects in 3D was the stereoscope

HISTORY OF 3D TV

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GOALS

CONTENT CREATION COMPRESSION AND CODING TRANSMISSION 3D DISPLAYS

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CONTENT CREATION

3D content is supplied by two

methods:-

1. Novel 3d camera for static video.

2. Multiple cameras for dynamic

video.

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NOVEL 3D camera for static video

. The 3D-video camera that will be

developed is based on Zcam.

. its operation is based on

generating a "light wall" moving

along the field of view.

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(a) Light wall moving from camera to scene

(b) Imprinted light wall back to camera

(c) Truncated light wall containing depthinformation from the source.

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Output of depth camera

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Multiple cameras for dynamic video

The dynamic scenes are captured by

using an array of hardware-synchronized cameras.

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CONVERSION FROM CONVENTIONAL 2D VIDEO

Two types of conversion

methods:-

1. offline conversion-use at content provider side

2. online conversion

-use at viewer side

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COMPRESSION AND CODING

Transmitting 16 uncompressed video streams

with 13001030 resolution and 24 bits perpixel at 30 frames per second requires 14.4

Gb/sec bandwidth. reduce the data to a single view with per-pixel

depth map. This data can be compressed in

real-time and broadcast as an MPEG-2

enhancement layer.

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Fig: The 3D TV uses the Layered Coding Syntax

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3D DISPLAYS

HOLOGRAPHIC DISPLAYS VOLUMETRIC DISPLAYS PARALLAX DISPLAYS LENTICULAR DISPLAYS

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1. Rear-projection 3D display with lenticular screen.

2. Front-projection 3D display with lenticular screen.

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ADVANTAGES. shows high resolution of 1024 X 768 pixels of

stereoscopic color images for multiple viewpoints

without special glasses.

is completely scalable and backward compatible

in the number of acquired, transmitted and

displayed views.

. The large number of views (16) , and the large

physical dimension ( 6X4 ) of the display lead to a

very immersive 3D experience.

. The projector based 3D display has a native

resolution of 12 million pixels which is greater thanthe largest currently available high resolution flat-

panel screen of IBM T221 LCD with 9 million pixels.

The overall delay in the system from the

acquisition to the display is less than one second.

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DISADVANTAGES

The graphics cards and projectors

are not synchronized which lead to

and increased motion blur for fast

movements in the scene. The Rear projection system has

less quality compared to front

projection system. Eye strain,headache and other

unpleasant side effects.

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APPLICATIONS

. Entertainment

. Medical field

. Tele-conferencing

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Visualization of different structures of the

Visible Male knee on the 3D-LCD monitor

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CONCLUSION

Most of the key ideas for the 3D TV systempresented in this paper have been known

for decades.

There is still much that we can do to

improve the quality, sharpness, optical

char. etc of the 3D display.

They have to develope high-dynamic range

cameras commercially. True high-dynamic range displays have also

been developed

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REFERENCES

An Assessment of 3DTV Technologies,Levent Onural-Bilkent Un.,Thomas Sikor-

Tech. Univ. Of Berlin, John Watson- Univ. Of

Aberdeen, NAB-2006 - Las Vegas - 26 April

2006 c Copyright 2006.

T. Okoshi, "Three dimensional displays,"

Proceedings of the IEEE, vol. 68, pp. 548-

564, 1980.

C. Fehn, A 3D-TV approach using depth

image-based rendering (DIBR), Proc. Of

VIIP 2003.

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