mean blur 3x3 kernel

meanBlur.m

function result = meanBlur(input)
  %im = imread('cameraman.tif');
  [x,y] = size(input);
  result = zeros(x,y);
  for i=1:x-2
    for j=1:y-2
      window = [input(i:i+2,j:j+2)];
      result(i+1,j+1) = mean2(window);
    end
  end
  %image(result)
end