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Error mapping between two images

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fzhmktr
fzhmktr 2019-8-4
评论： KALYAN ACHARJYA 2019-8-4
Hi, I have this task to show the error mapping between reference and distorted image. For example,
ref = imread('pout.tif');
A = imnoise(ref,'salt & pepper', 0.02);
peaksnr = psnr(A,ref);
This code will get me the value of psnr. Is it possible for me to display the error mapping between the two images? So i can see the errors detected by PSNR method.
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KALYAN ACHARJYA
KALYAN ACHARJYA 2019-8-4
error=A-ref;
imshow(error);
Or MSE?
"So i can see the errors detected by PSNR method".
Can you elaborate more?

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