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Three Components of Color

As we now know all perceived colors can be represented by three independent variables, either the LMS responses, or the tristimulus values under the primaries of a given color system, such as RGB or XYZ. In many situations (e.g., computer image processing), it is more convenient to represent a color by a different set of three independent variables HSL (or HSI, HSV). These are defined as

The hue, saturation and luminance can be obtained given the tristimulus values of a color under any color system.


Ruye Wang 2013-09-25