3x3 Average filter in matlab

Question

I\'ve written code to smooth an image using a 3x3 averaging filter, however the output is strange, it is almost all black. Here\'s my code.

function [filtere         


        

Answer 1

Implement neighborhood operation of sum of product operation between an image and a filter of size 3x3, the filter should be averaging filter. Then use the same function/code to compute Laplacian(2nd order derivative, prewitt and sobel operation(first order derivatives). Use a simple 10*10 matrix to perform these operations need matlab code