Description: Generating an image f1 (m, n), wherein the image size is 256 256, the highlight of the intermediate 12832, 0 = dark, bright Department 100. Its FFT:. 1 if so f2 (m, n) = (-1) ^ (m+n)* f1 (m, n), repeat the above process, comparing the amplitude spectrum of both the similarities and differences 2 If f2 (m , n) 90 degrees clockwise to get f3 (m, n), try to display FFT (f3) the amplitude spectrum and with the FFT (f2) to compare the magnitude of the spectrum
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third.m
second.m
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