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3*3 matched filter

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please any one help me .. how to apply 3*3 matched filter to image.. image is having size 465*800..and matched filter value is all 1's.

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Accepted Answer

Image Analyst
Image Analyst on 17 Sep 2012
Edited: Image Analyst on 17 Sep 2012
Try this:
blurredImage = conv2(single(grayImage), ones(3)/9);
imshow(blurredImage, []);
% Find where the image was all 1's in a 3x3 box.
% The output image will be exactly 1 in that situation.
matchingRegions = abs(blurredImage - 1) < 0.0001;
% Use axes() or figure() to switch to a new axes if you want.
imshow(matchingRegions, []);
You might also want to look at normxcorr2(). I have a demo for that if you want it.

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Chandra Shekhar
Chandra Shekhar on 17 Sep 2012
thanks for giving answer

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