pybsm.otf.functional.defocus_OTF

pybsm.otf.functional.defocus_OTF(*, u: ndarray, v: ndarray, w_x: float, w_y: float) → ndarray

IBSM Equation 3-25. Gaussian approximation for defocus on the optical axis.

This function is retained for backward compatibility. See circular_aperture_OTF_with_defocus for an exact solution.

Parameters:

• u – spatial frequency coordinates (rad^-1)

• v – spatial frequency coordinates (rad^-1)

• w_x – the 1/e blur spot radii in the x direction

• w_y – the 1/e blur spot radii in the y direction

Returns:

H:

OTF at spatial frequency (u,v) (unitless)