how can we PSNR ratio for images?

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Hitha V Nair
Hitha V Nair on 21 Jan 2014
Edited: Nitin on 22 Jan 2014
what is the coding for comparing two gray images using psnr ratio.i want to select the suitable filter for image processing. using some coding for psnr ratio which i got from internet are very confusing and didn't produce any results.please send me the possible codings for finding psnr.

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Nitin
Nitin on 22 Jan 2014
Edited: Nitin on 22 Jan 2014
Check out the link on file exchange to compute the PSNR between 2 images

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