Description: Respectively of the original image in the frequency domain using the ideal low-pass filter (choose an arbitrary cut-off frequency) and the ideal high-pass filter (choose an arbitrary cut-off frequency) and the ideal high-pass filter, and its use of fast Fourier transform, and output restored the image of the frequency spectrum. Finally, after the high pass filtering and low-pass filtering the summed output, and compares with the original image.
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