Scope of validity of PSNR in image/video quality assessment
Huynh-Thu, Q.
Ghanbari, M.
Psytechnics Ltd., Ipswich;
This paper appears in: Electronics Letters
Publication Date: June 19 2008
Volume: 44,
Issue: 13
On page(s): 800-801
ISSN: 0013-5194
INSPEC Accession Number: 10030302
Digital Object Identifier: 10.1049/el:20080522
Current Version Published: 2008-06-27
Abstract
Experimental data are presented that clearly demonstrate the scope of application of peak signal-to-noise ratio (PSNR) as a video quality metric. It is shown that as long as the video content and the codec type are not changed, PSNR is a valid quality measure. However, when the content is changed, correlation between subjective quality and PSNR is highly reduced. Hence PSNR cannot be a reliable method for assessing the video quality across different video contents.
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