Editing Peak signal-to-noise ratio (section)

== Performance comparison ==
Although a higher PSNR generally correlates with a higher quality reconstruction, in many cases it may not. One has to be extremely careful with the range of validity of this metric; it is only conclusively valid when it is used to compare results from the same codec (or codec type) and same content.<ref name=":0">{{Cite journal|last1=Huynh-Thu|first1=Q.|last2=Ghanbari|first2=M.|year=2008|title=Scope of validity of PSNR in image/video quality assessment|journal=Electronics Letters|volume=44|issue=13|pages=800|doi=10.1049/el:20080522|bibcode=2008ElL....44..800H}}</ref>

Generally, when it comes to estimating the [[Image quality|quality of images]] and [[Video quality|videos]] as perceived by humans, PSNR has been shown to perform very poorly compared to other quality metrics.<ref name=":0" /><ref>{{Cite journal|last1=Huynh-Thu|first1=Quan|last2=Ghanbari|first2=Mohammed|date=2012-01-01|title=The accuracy of PSNR in predicting video quality for different video scenes and frame rates|journal=Telecommunication Systems|language=en|volume=49|issue=1|pages=35–48|doi=10.1007/s11235-010-9351-x|s2cid=43713764|issn=1018-4864}}</ref>