How to impose a window centered on the current pixel of an image?

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Mayuri
Mayuri 2016-2-5
回答： Guillaume 2016-2-5
I have a noisy image of size 256x256. I need to impose a 11x11 window centered on the current pixel and find the maximum value within the window. This step should be repeated for all pixels in the image. Can anyone help me how to do that in MATLAB?

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Guillaume
Guillaume 2016-2-5
Use nlfilter:
nlfilter(img, [11 11], @(block) max(block(:)))

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