Fungsi Filter fftshow.m

function fftshow (f, type)
if nargin < 2,
    type = 'log';
end
if (type == 'log')
    f1 = log (1 + abs(f));
    fm = max (f1(:));
    imshow (im2uint8(f1/fm))
elseif (type == 'abs')
    fa = abs(f);
    fm = max (fa(:));
    imshow (fa/fm)
else
    error ('Typenya harus log atau abs tau!');

end;