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Scope of validity of PSNR in image/video quality assessment

Scope of validity of PSNR in image/video quality assessment

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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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    2. 2)
      • ITU: ‘Subjective video quality assessment methods for multimedia applications’, ITU-T Recommendation P.910, Geneva, Switzerland, September 1999.
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      • B. Girod . (1993) What's wrong with mean-squared error?, Digital images and human vision.
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      • T. Wiegand , H. Schwarz , A. Joch , F. Kossentini , G. Sullivan . Rate-constrained coder control and comparison of video coding standards. IEEE Trans. Circuits Syst. Video Technol. , 7 , 688 - 703

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