BASICS OF 3D TV
ARCHITECTURE OF 3D TV
TECHNOLOGIES PRESENTLY USED
MULTIVIEW AUTO STEREOSCOPIC DISPLAY
APPLICATIONS OF 3D TV
ADVANTAGES AND DISADVANTAGES
3. At first, films were silent, then sound was added;
Cinema and television were initially black-and-white, then colour TV was
Computer imaging and digital special effects have been the latest major
Nowadays markets are flooded with HDTV,LCD & Plasma TVs.
Three dimensional TV(3D TV) is expected to be next revolution in the TV
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
5. Stereographic images- It means two pictures taken with a
time separation that are then arranged to be viewed
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
6. We can only see the real world in 3D because we have
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
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
11. Anaglyphic 3D:
• It provides a 3D effect when viewed with 2 colour glasses
(each lens a chromatically opposite colour, usually red and
• 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
• Each eye perceives a different image resulting in the 3D
2.The problem is that, at the moment, you don't get
to see the 3D effects unless you're sitting in a very
3. So, far the parallax barrier technology has mainly
just been used for individual gaming on small,
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
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.