Article

Study of MPEG-2 Coding Performance based on a Perceptual

05/2003;
Source: CiteSeer

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.

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Keywords

Comparative results
 
constant bit rate
 
human visual system
 
known quality metrics
 
metric
 
metric models
 
Moving Picture Quality Metric
 
new video quality metric
 
sequences
 
subjective tests