A SUBJECTIVE STUDY OF THE INFLUENCE OF COLOR INFORMATION ON VISUAL QUALITY ASSESSMENT OF HIGH RESOLUTION PICTURES

This paper presents the design and the results of a psycho- visual experiment which aims at understanding how the color information affects the perceived quality of a high resolution still picture. The results of this experiment help to shed light into the importance of color for human observers and could be used to improve the performance of objective quality metrics. Major drawback of these "color metrics" or "multi- channel metrics" is that only very few verification results are presented. These results do not allow to conclude that a significant improvement is achieved in terms of correlation with the subjective quality perception, with respect to much simpler luminance only metrics. Furthermore, these algorithms are quite complex and their implementations are