1 April 2001 Perceptual color difference metric for complex images based on Mahalanobis distance
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Abstract
In this paper, a perceptual color difference is presented as an alternative color difference metric for complex images instead of the conventional color difference equations. This color difference is derived based on Mahalanobis distance by using covariance matrices for differences of each color attribute. The covariance matrices for each class of images can be obtained by psychophysical experiments using just noticeable difference in paired comparisons. We compared the resultant matrices for different class of images and the information in the matrix can give very useful trends and clues about which kind of transformation can minimize the perceptual color difference in images when a transformation such as gamut mapping is required.
Francisco Hideki Imai, Norimichi Tsumura, Yoichi Miyake, "Perceptual color difference metric for complex images based on Mahalanobis distance," Journal of Electronic Imaging 10(2), (1 April 2001). https://doi.org/10.1117/1.1350559
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