Color Appearance model ?

XYZ

Color

Appearance Model

X'Y'Z'

・print

・tungsten lamp

・light surround

・CRT display

・9300Ｋ

・dim surround

・lightness

・hue

・chroma

・etc,...

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グラフィックスの表示

If you have knowledge of the colorimetric and photometric specification of the stimulus and also, viewing conditions such as the adapting illuminant and the luminance factor of the background, a color appearance model gives you the color-appearance attributes such as lightness, chroma, hue and so on.

For example, you have a print in a light room illuminated with a tungsten lamp, and you know all colorimetric specification of stimulus and viewing, you can get color-appearance attributes. Then you try to reproduce the same image on a CRT display as the print. And if you have a knowledge of colorimetric specification of CRT display and its viewing conditions, the inverse transformation of color appearance model give you a corresponding tristimulus values which reproduces the same color appearance as the original print.