slmsuite.holography.toolbox.pad

pad(matrix, shape)[source]

Helper function to pad data with zeros. The padding is centered. This is used to get higher resolution upon Fourier transform.

Parameters

matrix (numpy.ndarray) – Data to pad.
shape ((int, int) OR None) – The desired shape of the matrix in numpy (h, w) form. If None, the matrix is returned unpadded.

Returns

Padded matrix.

Return type

numpy.ndarray