How to filter using FFT?

I have this image I want to filter,I am trying to filter it using FFT algorthim? how should I do that?
cups.jpg

2 个评论

I tried Google. Seems lost of people are interested to tell you about how thiis works.
The first link offered was
I think I am stuck in finding the image filter (the one we multiply the Fourier Transform with),is there are an easy way to find it or should I guess it?

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