Matlab to C# conversion

[salma]

i m working in image processing in c#,facing problem in converting code from matlab to C#
%This loops makes a window of 3*3 and scans over the image from left to
%right and top to bottom to get those pixel values that are most probably
%a function of Impulse, called Nimp.

for x=2:1:(sizeM-1)
for y=2:1:(sizeN-1)
k = x;
l = y;
x1 = f(k-1, l-1); x2 = f(k-1, l); x3 = f(k-1, l+1);
x4 = f(k, l-1); x5 = f(k, l); x6 = f(k, l+1);
x7 = f(k+1, l-1); x8 = f(k+1, l); x9 = f(k+1, l+1);
W = [x1,x2,x3,x4,x5, x6,x7,x8,x9];
x_sum = 0;
count = 0;
x_temp = 0;
wind(1,1) = W(1);
wind(1,2) = W(2);
wind(1,3) = W(3);
wind(2,1) = W(4);
wind(2,2) = W(5);
wind(2,3) = W(6);
wind(3,1) = W(7);
wind(3,2) = W(8);
wind(3,3) = W(9);

for m=1:1:3
for n=1:1:3
x_temp = wind(m,n);
if((x_temp == min(W)) | (x_temp == max(W)))% | (x_temp <= 10) | (x_temp >= 230))
Nimp_sub(m, n) = x_temp;
else
count = count + 1;
x_sum = x_sum + x_temp;
Nimp_sub(m, n) = 0;
end

end
end
%Nimp=size(f);
Nimp(k-1:k+1,l-1:l+1) = Nimp_sub;

counter = counter + 1
end
end

%---------------------------------------------------------------------------