colour.Lab_to_XYZ¶
-
colour.
Lab_to_XYZ
(Lab, illuminant=array([ 0.3457, 0.3585]))[source]¶ Converts from CIE L*a*b* colourspace to CIE XYZ tristimulus values.
Parameters: - Lab (array_like) – CIE L*a*b* colourspace array.
- illuminant (array_like, optional) – Reference illuminant xy chromaticity coordinates or CIE xyY colourspace array.
Returns: CIE XYZ tristimulus values.
Return type: ndarray
Notes
- Input Lightness \(L^*\) is in domain [0, 100].
- Input illuminant xy chromaticity coordinates or CIE xyY colourspace array are in domain [0, \(\infty\)].
- Output CIE XYZ tristimulus values are in range [0, 1].
References
Examples
>>> Lab = np.array([37.98562910, -23.62907688, -4.41746615]) >>> Lab_to_XYZ(Lab) array([ 0.0704953..., 0.1008 , 0.0955831...])