Scope of validity of PSNR in image/video quality assessment
Scope of validity of PSNR in image/video quality assessment
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DOI：
10.1049/el:20080522
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发表时间：
2008-06-19
影响因子：
1.1
通讯作者：
Ghanbari, M.
中科院分区：
文献类型：
--
作者：
Huynh-Thu, Q.;Ghanbari, M.
实验数据清楚地表明，峰值信噪比（PSNR）作为视频质量度量的应用范围。结果表明，只要视频内容和编解码器类型不改变，PSNR是一个有效的质量度量。然而，当内容改变时，主观质量和PSNR之间的相关性大大降低。因此，PSNR不是用于评估不同视频内容的视频质量的可靠方法。
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.