function im = IdealLowPass(im0,fc)
% fc is the circular cutoff frequency which is normalized to [0 1], that is,
% the highest radian frequency \pi of digital signals is mapped to 1.
[ir,ic,iz] = size(im0);
hr = (ir-1)/2;
hc = (ic-1)/2;
[x, y] = meshgrid(-hc:hc, -hr:hr);
mg = sqrt((x/hc).^2 + (y/hr).^2);
lp = double(mg <= fc);
IM = fftshift(fft2(double(im0)));
IP = zeros(size(IM));
for z = 1:iz
IP(:,:,z) = IM(:,:,z) .* lp;
im = abs(ifft2(ifftshift(IP)));
where do my previous comments go?
i am still a pretty much beginner at MATLAB and DIP, my explanation might contain a lot of flaws. Need you guys' input to make this forum better.
very useful, thanks
could you please add comments so that people who are new to Matlab can understand it easily
could you please add more comments for each line of code ?
misunderstand the reply, and upload this twice, delete one, and update this.