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CIE tristimulus values

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CIE tristimulus values (In French composantes trichromatiques CIE) color values of the CIE colorimetric system CIEXYZ; standardized representation of the cone sensitivities X (red), Y (green) and Z (blue) whereby, through definition of the luminance factors LX = 0, LY = 1 and LZ = 0, the CIE tristimulus value Y is also understood as brightness and as luminance factor A in the 2° CIE colorimetric system.