colour.colorimetry.RGB_2_degree_cmfs_to_XYZ_2_degree_cmfs#

colour.colorimetry.RGB_2_degree_cmfs_to_XYZ_2_degree_cmfs(wavelength: ArrayLike) → NDArrayFloat[source]#

Convert Wright & Guild 1931 2 Degree RGB CMFs colour matching functions into the CIE 1931 2 Degree Standard Observer colour matching functions.

Parameters:: wavelength (ArrayLike) – Wavelength \(\lambda\) in nm.
Returns:: CIE 1931 2 Degree Standard Observer spectral tristimulus values.
Return type:: numpy.ndarray

Notes

Data for the CIE 1931 2 Degree Standard Observer already exists, this definition is intended for educational purpose.

References

[WS00f]

Examples

>>> from colour.utilities import numpy_print_options
>>> with numpy_print_options(suppress=True):
...     RGB_2_degree_cmfs_to_XYZ_2_degree_cmfs(700)  
array([ 0.0113577...,  0.004102  ,  0.        ])