3 d television technology gajendra singh

Presented by

Gajendra Singh

Final Year

RIET JAIPUR

ABOUT 3D TV

TV that employs techniques of 3D presentation, such as stereoscopic nature and 3D display .

This presents a three dimensional view of the scene to the viewers.

It is expexted to be the next revolution in TV history.

This requires a 3D TV system with real time acquisition, transmission & 3D display of dynamic scenes.

Principle of 3D viewHuman vision –each eye sees a slightly different

perspective of the same scene as eyes are 3 inches apart.

The brain takes images from both eyes, merges them together to form our 3D view.

Getting the 3D effect at home involves tricking the brain into doing something similar with the images that it gets from a TV set.

Figure out a way to precisely show a set of slightly different images to each of your eyes.

Technical Overview

The whole system consists of mainly 3 blocks:

Acquisition Transmission Display

Acquisition

Consists of hardware synchronized cameras.

Capture live , uncompressed video streams & encode them using standard MPEG coding.

Each camera captures progressive high-definition video in real time.

TransmissionCompressed video is broadcast on separate channels

over a transmission network, which could be digital cable, satellite TV or the Internet.

Gigabit Ethernet provides the connectivity between decoders and consumers .

Gigabit Ethernet -high speed form of Ethernet (the most widely installed LAN technology), that can provide data transfer rates of about 1 gigabit per second (Gbps).

Technologies to display 3D content

Basic requirement –to display offset images that are filtered separately to the left and right eye.

Two strategies for this-

With eyeglasses required to filter the separate offset

images to each eye.

Without eyeglasses –let the lightsource split the images

directionally into the viewer’s eyes.

Common 3D display techologies

With eyeglasses:

Anaglyphic method

Polarization method

Alternate-frame sequencing (with active shutter lenses)

Without eyeglasses:

Autostereoscopic displays (Auto 3D).

Anaglyphic method

Uses Passive red-cyan lenses.

Polarization method

Uses passive polarized lenses

Autostereoscopy

Any method of displaying stereoscopic images without the use of special eyeglasses.

TV projects two different images that are picked up by the right eye and the left eye - without having to wear any glasses.

Autostereoscopic display technologies include:

lenticular viewing

parallel barrier

other methods

Parallax barrier

Applications

Education, Training and Simulation.

Medicine and dentistry

Entertainment and game industry.

Military.

Market application.

Cultural Heritage.

Future of 3D TVMore realistic with view from any angle.

More features that will give a lively experience.

Japan plans to make the futuristic television a commercial

reality by 2020.

The targeted “virtual reality” television would allow

people to view high definition images in 3D from any

angle, in addition to being able to touch and smell the

object being projected upwards from a screen to the floor.

Such a TV could be useful in home-shopping programs,

medical industry,etc

Conclusion

Concept of 3D is known for decades . Stereoscopic 3D TV

is an old concept. Autostereoscopy is a new one to

develop efficiently. There is a need of more development

in this field. Improvement required in the color

reproduction of natural scenes on multi-view display. In

future, there will be a live television experience similar to

real time experience.

Thank you