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can any one explain me the concept of conv2(), nfilter in sliding withdow?

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Samir khan
Samir khan on 22 Jul 2018
Commented: Samir khan on 25 Jul 2018
i am unable to understand how these functions play any role in sliding window. if anyone can help??


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Accepted Answer

Image Analyst
Image Analyst on 22 Jul 2018
nlfilter() slides the window across the image and applies some custom function, that you supply, to the pixels in the window. nlfilter can apply some custom function to the pixels in the window, something that conv2() cannot do.
conv2() slides the window across the image and multiplies the pixels in the window by the pixels in the filter kernel window and sums them. The output pixel is the sum. conv2() does not apply some custom function like nlfilter can.

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