Paddedsize calculate P and Q function minimum even value, PQ is zero-padded to avoid aliasing errors Crosstalk being used. Dftfilt function is used for frequency domain filtering function M Comparing spatial filtering and frequency domain filtering in the house in Function dftuv create a grid array is used to implement frequency domain filter Low-pass filtering in number of It can also generate a high-pass filter based on lpfilter. Function D = hypot (U, V) <=> D = sqrt (U. ^ 2+ V. ^ 2) substitute Function f = tofloat (f) <=> f = im2double (f) Alternate

room.tif
dftfilt.m
dftuv.m
FFT.m
LPF.m
number.tif
paddedsize.m

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