Messages on Anaglyphs group
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--- In anaglyphs(-at-)yahoogrou
>
> I'd be happy if the anaglyph even worked on a TV.
>
> My results have been horrible. It this even possible in any way?
> Or does the TV signal modify the colors beyond the anaglyphic
spectrum?
> This would be nice for older family members without computers to view
> anaglyphic pictures and/or movies on their TV sets.
>
> I know this is a reply to an old posting, but I did not see any answer
> to Ender's question.
>
> Jim
If it were an HD TV, certainly. If it were a TV with S-VHS input,
surely. Any TV with separate Chroma-Luma inputs for the video should
be able to render a halfway decent result for an anaglyph video image.
However, if we're talking about a TV with your conventional, single-
cable video input, not really. The composite video signal does not
allow for proper isolation of the color and brightness information, and
the slight resulting "edge-bleed" will give you plenty of double-image
edge-ghosting. Additionally, standard NTSC compresses the amplitude of
the video signal, modifying the colors to some degree. The overall
result is not much unlike saving an anaglyph as a severely compressed
JPEG, with the Chroma-subsampling left in.
You can see this if you can get a hold of any of the 3D anaglyph movies
released on VHS. There is no clean separation of the left and right
chips, due to the reasons I mentioned.
The best results I've seen were from 3D anaglyph movies on DVD, using
the S-VHS video input. Shrek-3D and Spy Kids 3 work very well by this
means.
