colour.temperature.xy_to_CCT_Kang2002#
- colour.temperature.xy_to_CCT_Kang2002(xy: ArrayLike, optimisation_kwargs: dict | None = None) NDArrayFloat [source]#
Return the correlated colour temperature \(T_{cp}\) from given CIE xy chromaticity coordinates using Kang et al. (2002) method.
- Parameters:
xy (ArrayLike) – CIE xy chromaticity coordinates.
optimisation_kwargs (dict | None) – Parameters for
scipy.optimize.minimize()
definition.
- Returns:
Correlated colour temperature \(T_{cp}\).
- Return type:
Warning
Kang et al. (2002) does not give an analytical inverse transformation to compute the correlated colour temperature \(T_{cp}\) from given CIE xy chromaticity coordinates, the current implementation relies on optimization using
scipy.optimize.minimize()
definition and thus has reduced precision and poor performance.References
[KMH+02]
Examples
>>> xy_to_CCT_Kang2002(np.array([0.31342600, 0.32359597])) ... 6504.3893128...