?? psnr.m
字號:
function [snr,mse] = psnr (A,B)
diff = A - B;
diff_sq = diff .^ 2; % difference squared
mse_clmn = mean(diff_sq); % means square diff. of the columns;
mse = mean(mse_clmn);
if (mse == 0)
snr=Inf;
else
snr = 10*log10(255^2/mse); % PSNR
end
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