Comparison of image coding techniques with a picture quality scale

A newly developed picture quality scale (PQS) provides a numerical measure of image quality for monochrome images well correlated with the mean opinion score. In this paper, we report some results on the evaluation and comparison of image coding methods with such an objective quality measure. The emphasis is given here to the evaluation of the quality of JPEG coding standard. We also review and discuss the important new areas of research that an objective distortion measure now makes possible.