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PSNR (Image Processing)

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PSNR of two images

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Calculates the Peak-to-peak signal to noise ratio of two images X and Y.

Comments and Ratings (1)

Cris Luengo

Cris Luengo (view profile)

Not a good example of good programming!

You can do exactly the same with:

X = double(X);
Y = double(Y);
m = sum((X(:)-Y(:)).^2) / prod(size(X));
psnr = 10*log10(255*255/m);

However, instead of assuming the peak is 255, you should use max(X(:)) as the peak.

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