3D-TV-PPT

2. INTRODUCTION
BASICS OF 3D TV
ARCHITECTURE OF 3D TV
TECHNOLOGIES PRESENTLY USED
MULTIVIEW AUTO STEREOSCOPIC DISPLAY
APPLICATIONS OF 3D TV
ADVANTAGES AND DISADVANTAGES
CONCLUSION
REFERENCES

3. At first, films were silent, then sound was added;
Cinema and television were initially black-and-white, then colour TV was
introduced.
Computer imaging and digital special effects have been the latest major
novelty.
Nowadays markets are flooded with HDTV,LCD & Plasma TVs.
Three dimensional TV(3D TV) is expected to be next revolution in the TV
history.

4. Binocular parallax-Binocular parallax refers to the ability of the
eyes to see a solid object and a continuous surface behind that
object even though the eyes see two different views.
Depth perception-It allows the beholder to accurately gauge the
distance to an object. It is the visual ability to perceive the world in
three dimensions.

5. Stereographic images- It means two pictures taken with a
time separation that are then arranged to be viewed
simultaneously.
Stereoscope-It is an optical device for creating stereoscopic
(or three dimensional) effects from flat (two-dimensional)
images; D. Brewster first constructed the stereoscope in 1844.
Holographic Images-A luminous, 3D,transparent,coloured
and nonmaterial image appearing out of a 2D medium, called
a hologram.

6. We can only see the real world in 3D because we have
two eyes.
So what is it that enables us to see in 3D when we have
both our eyes open?
The fundamental requirements for 3D are:
1.Two working eyes, each viewing the world from a
slightly different perspective (a couple of inches apart).
2.A brain that can take the two views and piece them
together into one 3D view.

7. If we look at a standard flat TV screen, we're looking at
a flat 2D picture.
It is of course possible for a TV to create the illusion of
3D.
The basics of 3D TV
Just like any other artificial 3D, 3D TV works by
feeding a separate image to each eye, so that the brain
can unite those two separate images into a 3D picture

8. Acquisition
Transmission
Display Unit

9. The acquisition stage consist of an array
of the hardware synchronized cameras.
MPEG-2 Encoding
PCI card.


Acquisition

10. Gigabit Ethernet
A transmission technology, enables super net to deliver enhanced network
performance.
Transmission

11. Anaglyphic 3D:
•It provides a 3D effect when viewed with 2 colour glasses
(each lens a chromatically opposite colour, usually red and
cyan).
•Images are made up of two colour layers, but they are offset
with respect to each other to produce a depth effect.
•Usually the main subject is in the centre, while the foreground
and background are shifted in opposite directions.

12. Polarization 3D:
•Two images intended for each eye are displayed from
two separate projectors.
•Each image is projected with a polarization mutually
orthogonal to the other polarization.
•Polarized 3D Glasses are then used with polarized filters
to ensure that each eye receives only the intended
image.
•Each eye perceives a different image resulting in the 3D
effect.

13. Alternate-frame Sequencing:
•The movie is filmed with two cameras. Then the 
images are placed into a single strip of film in 
alternating order.
•The film is then run at 48 frames-per-second.
•Each eye's glass contains a liquid crystal layer 
which has the property of becoming dark 
when voltage is applied, being 
otherwise transparent.

14. Holographic Displays:The holographic image is true three-dimensional. It can The holographic image is true three-dimensional. It can 
be viewed in different angles without glassesbe viewed in different angles without glasses
Volumetric Displays:It creates 3-D imagery via the emission, scattering, or 
relaying of illumination from well-defined regions in (x,y,z) space. 
Parallax Displays:It emits spatially varying directional light. The 
panoramagram, invented in 1824, is an instrument used to obtain the illusion 
of depth on a flat surface

16. .
2.The problem is that, at the moment, you don't get
to see the 3D effects unless you're sitting in a very
specific position.
3. So, far the parallax barrier technology has mainly
just been used for individual gaming on small,
handheld screens.
4. The Toshiba screen uses a "multi-parallax"
method to increase the potential viewing angle of the
display. From what I can tell, the system is actually
showing 9 separate pairs of images across the 30
degree angle

17. In the field of medicine, education.
Commerce, Museum.
In Engineering field for Simulation and Visualization.
Entertainment and Gaming.
Military and Communication field.
Richer ,Lifelike and entertaining experience than 2D TV for home users.

18. Greater 3D experience requires glasses to be worn while viewing.
No defined industry standard for 3D hardware, software & TV components.
High production and transportation costs of 3D video information. 
Health problems may occur.

19. Thus we have seen various technologies used for 3D imaging and viewing.
We also explained technology of 3D TV, discussed various aspects and
features of 3D TV.
Another area of future research is precise colour reproduction of natural
scenes on multiview displays.
In future we will be able to touch and smell the objects being projected from a
screen to the viewers.

20. http://www.google.com
http://www.scribd.com
http://www.wikipedia.com
http://www.3D-TV.info
http://www.3dglasses.net