Scope of validity of PSNR in image/video quality assessment

2008/06/19 by Q. Huynh-Thu, Quan Huynh‐Thu, M. Ghanbari · 104 citations
Computer Science · #Image and Video Quality Assessment #Video Coding and Compression Technologies #Advanced Image Processing Techniques

paper · doi:10.1049/el:20080522

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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