Reduce the steps within this code

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Ayesha
Ayesha am 19 Jan. 2014
Bearbeitet: Image Analyst am 19 Jan. 2014
Hi there!
I've been wondering of a way to cut down the steps of sorting the transform and thresholding which constructs an image based on specific # of coefficicents. f is the image and M=4096:
R = fft2(f);
s = sort(abs(R(:)));
s = s(end:-1:1);
T = s(M+1);
R = R.*(abs(R)>T);
f1 = real(ifft2(R));
Just a thought. What do you suggest?

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Amit
Amit am 19 Jan. 2014
Bearbeitet: Amit am 19 Jan. 2014
R = fft2(f);
s = sort(abs(R(:)),1,'descend');
%s = s(end:-1:1);
T = s(M+1);
%R = R.*(abs(R)>T);
f1 = real(ifft2(R.*(abs(R)>T)));

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