colour.contrast.optical_MTF_Barten1999¶
- colour.contrast.optical_MTF_Barten1999(u, sigma=0.01)[source]¶
Returns the optical modulation transfer function (MTF) \(M_{opt}\) of the eye using Barten (1999) method.
- Parameters
u (numeric or array_like) – Spatial frequency \(u\), the cycles per degree.
sigma (numeric or array_like, optional) – Standard deviation \(\sigma\) of the line-spread function resulting from the convolution of the different elements of the convolution process.
- Returns
Optical modulation transfer function (MTF) \(M_{opt}\) of the eye.
- Return type
numeric or array_like
References
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Examples
>>> optical_MTF_Barten1999(4, 0.01) 0.9689107...