Hi all,
I would be glad to know how to do Surface fitting for the
following situation...

I have a gray scale image with range or intensity z(x,y) and
to compute the noise variance at each pixel P, i must first perform a
Least-Square Plane Fitting in the 3-by-3 neighborhood of P with a
ready-made plane with equation z=Ax+By+C. Now this is where the
problem is!! I dont know how to find the co-efficients(A,B & C) of
this given equation.

It would be appreciable if some one can help me out of this
situation. Thank you. Start a New Thread