LinearizeSpline¶
- class lsst.ip.isr.LinearizeSpline¶
Bases:
LinearizeBase
Correct non-linearity with a spline model.
corrImage = uncorrImage - Spline(coeffs, uncorrImage)
Notes
The spline fit calculates a correction as a function of the expected linear flux term. Because of this, the correction needs to be subtracted from the observed flux.
Attributes Summary
Methods Summary
__call__
(image, **kwargs)Correct for non-linearity.
Attributes Documentation
- LinearityType = 'Spline'¶
Methods Documentation
- __call__(image, **kwargs)¶
Correct for non-linearity.
- Parameters:
- image
lsst.afw.image.Image
Image to be corrected
- kwargs
dict
Dictionary of parameter keywords:
coeffs
Coefficient vector (
list
ornumpy.array
).log
Logger to handle messages (
logging.Logger
).
- image
- Returns: