Study of MPEG-2 Coding Performance based on a Perceptual
ABSTRACT In this paper some well known quality metrics such as PSNR and the metric developed at Institute for Telecommunication Sciences (ITS) are reviewed. Their shortcomings in measuring quality of coded video compared to subjective tests are pointed out. Then, a new video quality metric called Moving Picture Quality Metric (MPQM) is presented. This metric models the human visual system and matches correctly subjective evaluations. Comparative results in the case of constant bit rate (CBR) MPEG-2 coded sequences are presented, showing the superiority of MPQM over ITS and PSNR.