Object to object color matching strategy depending on the image contents is proposed. Pictorial color image is classified into different object areas with clustered color distributions. Euclidian or Mahalanobis color distance measures, and maximum likelihood method based on Bayesian decision rule, are introduced to the classification. After the objects' classification, each clustered pixels are projected onto principal component space by Hotelling transform and the color mappings are performed for the principal components to be matched in between the individual objects of original and printed images.
Hiroaki Kotera, Teturo Morimoto, Ryoichi Saito, "Object to Object Color Matchings By Image Clustering" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP14), 1998, pp 310 - 314, https://doi.org/10.2352/ISSN.2169-4451.1998.14.1.art00076_1