How to add the neighboring pixel values

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I have a matrix - if 0 occurs then i have to add the 8 neighboring pixels and replace the 0 value . is there any built in function for this ..

Accepted Answer

Walter Roberson
Walter Roberson on 30 Jun 2015
filt2() with [1 1 1;1 0 1; 1 1 1] to get the sums everywhere. Then in the places that are 0 in the original, replace with the sum at the corresponding location. Use logical indexing.

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