basic Weighted Median filter

is there a beginner method for this filter?

if:

I = [10, 200, 21; 7, 9, 10; 200, 20, 50];

and after adding zeros:

0 0 0 0 0

0 10 200 21 0

0 7 9 10 0

0 200 20 50 0

0 0 0 0 0

w = [1, 2, 1; 2, 3, 2; 1, 2, 1];

it should result in [0, 0, 0, 0, 0, 0, 10, 10, 10, 200, 200, 0, 7, 7, 9] for number 10 (2,2)

and so on for each number.

without using Matlab functions (so only by using For loops, If conditions and so on... )

[Hakar Doski]

i managed to write this:

I = [10, 200, 21; 7, 9, 10; 200, 20, 50];
[r, c] = size(I);

IZ = zeros(r + 2, c + 2);
IZ(2:end - 1, 2:end - 1) = I;

w = [1, 2, 1; 2, 3, 2; 1, 2, 1];

for n = 1:r
    for m = 1:c
        P = 1;
        for i = 1:3
            for j = 1:3
                for t=1:w(i,j)
                    temp(P) = IZ(i+(n-1), j+(m-1));
                    P = P + 1;
                end
            end
        end
        temp = sort(temp);
        O(n, m) = temp(round(length(temp)/2));
    end
end

is there a way to simplify the loops more?