Centroid

Notes:

Calculate the centroid and slopes for all apertures:
The structure of the return on the function is a row vector of slopes:
[s_x(0,0),.,s_x(0,N),.,s_x(M,0),.,s_x(M,N),s_y(0,0),.,s_y(0,N),.,s_y(M,0),.,s_y(M,N)]

Centroid calculation using thresholding method.

I am confused with the term Nx and Ny. What is it? is it like number of pixel (in x and y axis) for each aperture?