Plot nonlinear correlation between two images

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fresta peng 2019-4-10

编辑： fresta peng 2019-4-10

Hello,

I need to plot nonlinear correaltion between two images and if the images are same we get to see a sharp peak in the centre.

The formulation is : abs ( IFT( {FT(img1) FT(img2)} x {FT(img1) FT(img2)} / abs(FT(img1) FT(img2)) ) ).^2

can somebody help me realize the code to do this.

The image on left is when two images are same and o right is when they are different.

Thanks

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R2014b

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