I need help with this matlab coding question.

I need to create a function zaa = antialias(z); that inputs a high res image z and outputs high-res anti-aliased image zaa. The system needs to compute each point of zaa[x,y]. The high res image is z = round(exp(-1/w.^2*((y.'-30).^2+(x-40).^2)));

Zaa: is the following equation

the code should follow along the lines of this but I am confused as to what the difference equation would be in code

Zaa[2, y) = z[2, y] + (1/4)(z[-1, y] + 2[x +1, y] + z[2, y- 1] + z[2,+1]) function zaa = antialias(z); zaa = zeros(size (2,1), size (2, 2)); TIL for nn = 1:size (z,1) % grab # pows for mm = 1:size (2, 2) grab # col if nn> 1 && nn 1 && mm 1 && nn 1 && mm