colour.xy_to_XYZ

colour.xy_to_XYZ(xy)[source]

Returns the CIE XYZ tristimulus values from given CIE xy chromaticity coordinates.

Parameters:xy (array_like) – CIE xy chromaticity coordinates.
Returns:CIE XYZ tristimulus values.
Return type:ndarray

Notes

Domain Scale - Reference Scale - 1
xy [0, 1] [0, 1]
Range Scale - Reference Scale - 1
XYZ [0, 1] [0, 1]

References

[Wikipedia2005]

Examples

>>> xy = np.array([0.54369557, 0.32107944])
>>> xy_to_XYZ(xy)  # doctest: +ELLIPSIS
array([ 1.6933366...,  1.        ,  0.4211574...])