P3D Re Color vision in 3D

[abram klooswyk <abram.klooswyk@xxxxxx>]

Phil Caine wrote (P3D Digest 3484, 09 Sep 1999):
>I wonder if there is any relationship between color vision
>and human perception of 3D.

Bob Wier answered (10 Sep 1999):
>You might want to search the archives.
>http://www.calcite.rocky.edu/photo-3d
>as there was an extended discussion of this some time ago.

Indeed!

>From Ray Zone's response (P3D Digest 3486, 10 Sep 1999):
>This phenomenon might be an atavistic perceptual bias that
>is possibly based on the fact that for millennia the most
>remote imagery in our field of view, that which is
>farthest from us, is usually the blue of the sky.
>And whenever we perceive red it may well have been the
>near and yawning mouth of a predator coming for us!

It might be perceptual bias, but it is based on physiological
facts, so it might be evolutionary bias.

I wrote in PHOTO-3D Digest 3044, 26 Oct 1998:
>>Chromostereopsis is known since the 19th century. The Dutch
physiologist Willem Einthoven (1860-1927) wrote his thesis on
this subject (1885). That treatise was only 32 small pages long.<<

>>Recent literature on chromostereopsis is found through the
(American) National Library of Medicine (NLM), which offers
(free of charge) access to the medical literature database
MEDLINE, accessible *anywhere* on the globe by *anyone* with
Internet access. The database also covers physiology, including
research on binocular vision and depth perception.
http://www.ncbi.nlm.nih.gov/PubMed/
When you enter chromostereo* (star for wildcard, as usually),
you get the references, clicking on an authors name often mostly
gives the abstract of the article (if recent).<<

Simmons DR and Kingdom FA wrote in "Vision Research", 1997 May;
vol 37 (10): pages 1271-1280 an article called:
"On the independence of chromatic and achromatic stereopsis
 mechanisms".
>From the abstract:
"The extent to which the processing of stereoscopic depth
information can take place separately in colour-contrast-sensitive
and luminance-contrast-sensitive mechanisms has been investigated."
(...) In providing evidence in favour of an independent chromatic
stereopsis mechanism, it was shown that luminance artifacts were
unlikely to be the cause of maintained stereopsis at isoluminance.
The possible neural substrates of chromatic stereopsis are discussed."

So it is a complicated issue which isn't settled scientifically.

Abram Klooswyk