lentil.zernike_coordinates

lentil.zernike_coordinates(mask, shift=None, rotate=0)[source]

Compute the Zernike coordinate system for a given mask.

Parameters
  • mask (array_like) – Mask defining the extent to compute the Zernike polynomial over. All nonzero entries are included in the result.

  • shift ((2,) array_like or None, optional) – x, y shift of the coordinate system origin in pixels. If None (default), shift is computed automatically to locate the origin at the mask centroid.

  • rotate (float, optional) – Angle to rotate coordinate system by in degrees. rotate is specified relative to the x-axis. Default is 0.