high pass filter implement on a image
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hello. i want to apply a high pass filter on a image. i m not understanding how apply a ideal high pass filter on image.please any one guide me.
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Pekko Tuominen
on 3 Jul 2017
Do you mean ideal in the same sense as a rectangular frequency filter is ideal for 1D signals? Or ideal with respect to the end result in some visual sense?
Accepted Answer
Image Analyst
on 15 Jan 2012
There may be no ideal filter. Here's one possibility:
kernel = [-1 -1 -1;-1 8 -1;-1 -1 -1];
filteredImage = imfilter(grayImage, kernel, 'same');
You could also do filtering in the Fourier domain if you want.
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