Heavy criticism has been directed against using peak signal-to-noise ratio (PSNR) as a full reference quality metric for digitally processed images and video, since many studies have shown a weak correlation between subjective quality scores and the respective PSNR values. In this paper, we show that the low performance of PSNR is often related to a content dependent systematic shift of PSNR values. In scenarios with fixed content and distortion types that are typical for visual communications applications, PSNR may perform closely as well, or in some cases even better than the more complex objective quality models known from the literature. Therefore, the use of PSNR may be justified for comparative quality assessment with fixed content.
|Title of host publication||2012 4th International Workshop on Quality of Multimedia Experience, QoMEX 2012|
|Number of pages||2|
|Publication status||Published - 2012|
|Event||2012 4th International Workshop on Quality of Multimedia Experience, QoMEX 2012 - Melbourne, VIC, Australia|
Duration: 5 Jul 2012 → 7 Jul 2012
|Conference||2012 4th International Workshop on Quality of Multimedia Experience, QoMEX 2012|
|Period||5/07/12 → 7/07/12|