colour.characterisation.polynomial_expansion_Vandermonde#
- colour.characterisation.polynomial_expansion_Vandermonde(a: ArrayLike, degree: int = 1) NDArrayFloat [source]#
Perform polynomial expansion of given \(a\) array using Vandermonde method.
- Parameters
a (ArrayLike) – \(a\) array to expand.
degree (int) – Expanded polynomial degree.
- Returns
Expanded \(a\) array.
- Return type
References
Examples
>>> RGB = np.array([0.17224810, 0.09170660, 0.06416938]) >>> polynomial_expansion_Vandermonde(RGB) array([ 0.1722481 , 0.0917066 , 0.06416938, 1. ])