# colour.characterisation.matrix_colour_correction_Finlayson2015¶

colour.characterisation.matrix_colour_correction_Finlayson2015(M_T: ArrayLike, M_R: ArrayLike, degree: Literal[1, 2, 3, 4] = 1, root_polynomial_expansion: bool = True) [source]

Compute a colour correction matrix from given $$M_T$$ colour array to $$M_R$$ colour array using Finlayson et al. (2015) method.

Parameters
• M_T (ArrayLike) – Test array $$M_T$$ to fit onto array $$M_R$$.

• M_R (ArrayLike) – Reference array the array $$M_T$$ will be colour fitted against.

• degree (Literal[1, 2, 3, 4]) – Expanded polynomial degree.

• root_polynomial_expansion (bool) – Whether to use the root-polynomials set for the expansion.

Returns

Colour correction matrix.

Return type

numpy.ndarray

References

[FMH15]

Examples

>>> prng = np.random.RandomState(2)
>>> M_T = prng.random_sample((24, 3))
>>> M_R = M_T + (prng.random_sample((24, 3)) - 0.5) * 0.5
>>> matrix_colour_correction_Finlayson2015(M_T, M_R)
array([[ 1.0526376...,  0.1378078..., -0.2276339...],
[ 0.0739584...,  1.0293994..., -0.1060115...],
[ 0.0572550..., -0.2052633...,  1.1015194...]])