How to calculate SNR between two images

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Rachael Tobin on 12 Oct 2015

I have two images (300 x 300 pixels) from scans I have preformed all of the same scene.

The first is a better quality image which I am using as my "ground truth".

I want to be able to calculate the SNR between the ground truth and all my other images.

Should I do this using Matlabs snr(x,y) or should I use 20log(norm(x)/norm(x-y)) as I have seen others advise?

Thanks

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