Creation of 3X3 window

Suppose, I have to scan the image using the initial size of the window 3X3 and the coordinates of the pixel present in the window is [-1,0,1] i.e m=[-1 0 1] and n=[-1 0 1]

Please provide matlab code to implement this.

Answer 1

[KSSV]

REad this https://in.mathworks.com/matlabcentral/answers/362262-i-have-a-32-32-matrix-i-want-to-take-mean-of-each-4-4-so-that-the-matrix-is-reduced-to-8-8-array#answer_286773

It should be helpful.