Re: Color of a rose...
Re: Color of a rose...
- Subject: Re: Color of a rose...
- From: Igor Asselbergs <email@hidden>
- Date: Thu, 4 Jun 2009 10:04:48 +0200
A lot has already been said on this subject. But while the hard- and
software have been pretty much covered, no one mentioned the wetware.
The human visual system never perceives colors 'as such' but always in
conjuction with surrounding colors. Translated to digital color
management you might say we carry around an automated white point
correction utility right into our own heads. In science this is called
'color constancy' and the effect of it is much more powerfull than
most people realize.
So my suggestion would be to look at the background of your rose, and
more in particular the backgound whites. If your whites are measured
as orang-ish, chances are you will percieve the red rose as being
purple-ish. And the other way round: if your whites are purple-ish,
the exact same red of the rose will turn orange-ish in your
perception. Trust me, I can make the exact same red look purple-ish in
one image, orang-ish in another
Even while I'm aware of the issue, I don't care to remember how many
times I went on bug hunt, only to find the cause of a color problem in
my own perceptual system.
Igor Asselbergs
Colorjinn
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