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

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Abdul Gaffar 2021-10-4

评论： KSSV 2021-10-6

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 (??)

KSSV 2021-10-4

编辑：KSSV 2021-10-4

Read about ssim.

You can try:

R = regression(Img1(:),Img2(:)) ;

Abdul Gaffar 2021-10-6

Error occured while running: R = regression(Img1(:),Img2(:)) ;

KSSV 2021-10-6

What error? You have to specify the error to help you.

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