§54
Victor Ostromoukhov - Université de Montréal
Efficient Color
Perceptually
Uniform Space: MacAdam
•In color space CIE-XYZ, the perceived distance between colors is not
equal everywhere
•In perceptually uniform color space, Euclidean distances reflect
perceived differences between colors
•MacAdam ellipses (areas of unperceivable differences) become circles
Source: [Wyszecki and Stiles ’82]