Perceptual color difference metric for complex images based on Mahalanobis distance
F. H. Imai*, N. Tsumura, Y. Miyake
Department of Information and Image Sciences,
Chiba University
1-33, Yayoi-cho, Inage-ku, Chiba 263-8522
Japan
MCSL, RIT
Journal of Electronic Imaging 10(2) (2001) pp.385-393.
Abstract
In this paper, a perceptual color difference
for complex images is defined instead of
the conventional color differences equations.
This color difference is derived based on
Mahalanobis distance by using covariance
matrices for differences of each color dimensions.
The covariance matrices for each class of
images can be obtained by psychophysical
experiments. We compared the resultant matrices
for different class of images and it was
possible to observe that the information
in the matrix can give very useful trends
and clues about which kind of transformation
can minimize the perceptual difference in
images when a transformation such as gamut
mapping is required.
Full paper ( to appeare)
[PDF]
Conference paper
[PDF] Normichi Tsumura, Toshiki Saito, Francisco
H. Imai, Hideaki Haneishi, and Yoichi Miyake,
"Color Gamut Mapping based on Mahalanobis
Distance for Color Reproduction of Electronic
Endoscope Image under Different Illuminant,"
IS&T/SID's 5th Color Imaging Conference,
Color Science, Systems and Appl, pp. 158-162(Scottsdale,
Arizona, 1997.11.19).