# Peak Signal to Noise Ratio of Images

I am filtering a blurred image, and want to evaluate the performance of Peak Signal to Noise Ratio (PSNR) in Mathematica version 9.0. But I am facing the problem of evaluating the PSNR. Could anyone explain how to do this?

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Welcome to Mathematica SE ! Please, provide the code you are working on in order to receive constructive answers. –  Sektor Aug 8 '13 at 13:46
Actually, I have successfully calculated the various parameters like MEAN INTENSITY, ENTROPY & STANDARD DEVIATION INTENSITY, etc. of the images using MMA 9.0. But, it is told me to calculate also the PSNR for my class room assignment. If possible, please provide the necessary guidelines of how to go about it –  user8727 Aug 8 '13 at 13:58

 ImageDistance[img1, img2]

The default measure in this calculation is the Euclidean distance, which is probably what you need to calculate the PSNR. If not, ImageDistance takes a DistanceFunction option which is quite flexible.