What is 3D TV?
Following the introduction of HD digital tv, the
next big thing in television is likely to be 3D TV.
So what is 3D TV and does it work?
There are several ways of creating a 3D image to
the eye. In the old days 3D could be experienced by
using coloured glasses known as Anaglyph 3D also known as Stereoscopic 3D. These glasses usually
contained a Red and a Blue glass and required the
video to project the Red and Blue colour at the same
time. The downside of presenting 3D in such a way
was that the image quality did not appear to be as
impressive as one would have hoped.
There are various other technologies under
investigation being Alternate-Frame Sequencing
(which requires active shutter classes) and
Auto-stereoscopic 3D which doesn’t require glasses
at all. There is no generic standard adopted yet,
though the technology that is currently getting
significant attention is called Passive Polarisation
– it is the technology adopted by Sky which has
come available to all Sky HD digital TV customers
as per April 2010.