How to find the 2-D correlation coefficient between the two images, each having same pixels?

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Abdul Gaffar
Abdul Gaffar le 4 Oct 2021
Commenté : KSSV le 6 Oct 2021
I have to calculate the 2-D correlation coefficient between the images img1 and img2, each having same pixels. I am doing the following:
img1 = zeros(256);
img2 = ones(256); or you can take all white image
Corr_Coeff = corr2(img1, img2)
Output: NaN (??)

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KSSV
KSSV le 4 Oct 2021
Modifié(e) : KSSV le 4 Oct 2021
Read about ssim.
You can try:
R = regression(Img1(:),Img2(:)) ;
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Abdul Gaffar
Abdul Gaffar le 6 Oct 2021
Error occured while running: R = regression(Img1(:),Img2(:)) ;
KSSV
KSSV le 6 Oct 2021
What error? You have to specify the error to help you.

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