Von Kries coefficient law

The von Kries coefficient law in color adaptation describes the relationship between the illuminant and the human visual system sensitivity. The law accounts for the approximate color constancy in the human visual system. It is the oldest and most widely used law to quantify color adaptation, and is used widely in the field of vision and chromatic adaptation.

The von Kries coefficient law compensates for the illumination change using a purely diagonal scaling of the cone absorptions. While the law does not provide a precise indication of the correction, it typically provides a reasonable approximation.

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