colour.Lab_to_XYZ#
- colour.Lab_to_XYZ(Lab: ArrayLike, illuminant: ArrayLike = CCS_ILLUMINANTS['CIE 1931 2 Degree Standard Observer']['D65']) NDArrayFloat [source]#
Convert from CIE L*a*b* colourspace to CIE XYZ tristimulus values.
- Parameters:
Lab (ArrayLike) – CIE L*a*b* colourspace array.
illuminant (ArrayLike) – Reference illuminant CIE xy chromaticity coordinates or CIE xyY colourspace array.
- Returns:
CIE XYZ tristimulus values.
- Return type:
Notes
Domain
Scale - Reference
Scale - 1
Lab
L
: [0, 100]a
: [-100, 100]b
: [-100, 100]L
: [0, 1]a
: [-1, 1]b
: [-1, 1]illuminant
[0, 1]
[0, 1]
Range
Scale - Reference
Scale - 1
XYZ
[0, 1]
[0, 1]
References
Examples
>>> import numpy as np >>> Lab = np.array([41.52787529, 52.63858304, 26.92317922]) >>> Lab_to_XYZ(Lab) array([ 0.2065400..., 0.1219722..., 0.0513695...])