fft - Matlab: Remove noisy peaks -

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i have transformed image of method fft2 want locate noisy peaks , erase them shown in following image link:

image noisy peaks

kindly suggest matlab functionality achieving this

this did far

  f = fft2(myimage);    f = fftshift(f); % center fft    f = abs(f); % magnitude   f = log(f+1); % use log, perceptual scaling, , +1 since log(0) undefined   f = mat2gray(f); % use mat2gray scale image between 0 , 1    imshow(f,[]); % display result

you can try create mask of shows/represents points exceed threshold , position. let's create arrays of position.

[x y] = meshgrid(1:size(a, 2), 1:size(a, 1));  % x-y coordinate of data ft = 0.5;                                      % try different values case. mask = f > ft && y < 0.4*size(a, 1) && y > 0.6*size(a, 1); f(mask) = 0;

you should able check mask see if have located right positions. imagesc(mask) helpful during trial-and-error step. note don't have x rules in example potentially add them if reduce search space.


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