Re: color perception differences between eyes

In a message dated 7/19/09 6:45 AM, Mike Eddington wrote:

>>> Yes, but again, how much of this variation in individual visual makeup gets
> compensated for by our visual system, so that we adapt to both white
> neutrality and scene luminance?>>
> 
> Yes, you're likely correct. In fact a study has shown that people with
> significant differences in cone distribution in their fovea still perceived
> color similarly due to compensatory mechanisms in the brain, which might
> indicate more than just white point and luminance adaptation..
> 
> http://news.softpedia.com/newsPDF/We-are-seeing-with-our-brains-16780.pdf
> 
> Still, with all the physiological differences between our own eyes, and that
> of others, coupled with instrumentation and mathematical inconsistencies, it
> would seem that color "by the numbers" will currently only go so far.

And yet the CIE 1931 Standard Observer still seems to be the best
statistically-based "educated guess" available so far of human spectral
responses, which, due to the fact that each individual is slightly or even
markedly different from the rest, would otherwise be either unknowable or
would have to be studied person by person -- a clearly impractical
proposition.

Marco


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