Fourier Transform, Optical Computing, Free Space Optics.
and m-1​ whose Euclidean division with m​ has the same remainder as that of ​n. The next step, common to the two algorithms, is to compute the 2D FT of each of these arrays. This gives nx ny​ new arrays with shape (nx,ny)​ each, denoted with a ‘~’. Finally, we need to reconstruct the result. Up to