chromatic adaptation
chromatic adaptation
- Subject: chromatic adaptation
- From: Samer Mady <email@hidden>
- Date: Thu, 21 Jun 2001 09:42:44 +0200
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<snip>but if you look at a gray paper under D50 und D65 it
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will look in both cases gray. which means the visual system is capable in
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this of changing it4s sensitivity so that the Hue does not change.
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It will still look gray, but the relative 'warmth' or 'coolness' of the
gray
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will/should be perceived.
the eye has three kinds of color receptors. one that is most sentsetive to
short wavelength, on that is most sentsetive to middle wavelength and one
that is most sensetive to long wavelength. the sensitivity of each receptor
changes according to the colour of the illumination. if the illumination is
reddish the sensitivity of the receptors that are sensitive for long
wavelength will be reduced and if the illumination is blue the receptors
that are sensitive for short wavelength will be less sensitive.
=> we will not be able to perceive the warmth or coolness of the colour.
samer mady