The subjective evaluation of the color image quality came into focus because of the “failure” of the objective criteria to offers good results in terms of human perception. In general, objective and subjective evaluation of compressed images can lead to significant different conclusions. We show that the classical MSE measure can become correlated with perceptual experiments for an inter-color distance based on a plane, triangular color plot.
Adrian Stoica, Constantin Vertan, Christine Fernandez-Maloigne, "Correlating Objective and Subjective Color Image Quality Evaluation for JPEG 2000-Compressed Images" in Proc. IS&T 11th Color and Imaging Conf., 2003, pp 137 - 142, https://doi.org/10.2352/CIC.2003.11.1.art00024