colour.contrast.optical_MTF_Barten1999#

colour.contrast.optical_MTF_Barten1999(u: ArrayLike, sigma: ArrayLike = 0.01) → NDArrayFloat[source]#

Compute the optical modulation transfer function (MTF) \(M_{opt}\) of the eye using Barten (1999) method.

Parameters:

u (ArrayLike) – Spatial frequency \(u\), the cycles per degree.
sigma (ArrayLike) – 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:

numpy.ndarray

References

Examples

>>> optical_MTF_Barten1999(4, 0.01)
0.9689107...