prysm.degredations#
Degredations in the image chain.
- prysm.degredations.smear_ft(fx, fy, width, angle)#
Analytic Fourier Transform (OTF) of smear.
- Parameters
fx (numpy.ndarray) – X spatial frequencies, units of reciprocal width
fy (numpy.ndarray) – Y spatial frequencies, units of reciprocal width
width (float) – width of the smear, units of length (e.g. um)
angle (float) – angle w.r.t the X axis of the smear, degrees
- Returns
transfer function of the smear
- Return type
numpy.ndarray
- prysm.degredations.jitter_ft(fr, scale)#
Analytic Fourier transform (OTF) of jitter.
- Parameters
fr (numpy.ndarray) – radial spatial frequency, units of reciprocal scale
scale (float) – scale of the jitter
- Returns
transfer function of the jitter
- Return type
numpy.ndarray