colour.XYZ_to_ProLab#
- colour.XYZ_to_ProLab(XYZ: ArrayLike, illuminant: ArrayLike = CCS_ILLUMINANTS['CIE 1931 2 Degree Standard Observer']['D65']) NDArrayFloat [source]#
Convert from CIE XYZ tristimulus values to ProLab colourspace.
- Parameters:
XYZ (ArrayLike) – CIE XYZ tristimulus values.
illuminant (ArrayLike) – Reference illuminant CIE xy chromaticity coordinates or CIE xyY colourspace array.
- Returns:
ProLab colourspace array.
- Return type:
Notes
Domain
Scale - Reference
Scale - 1
XYZ
[0, 1]
[0, 1]
Range
Scale - Reference
Scale - 1
ProLab
L
: [0, 1]a
: [-1, 1]b
: [-1, 1]L
: [0, 1]a
: [-1, 1]b
: [-1, 1]References
[KSNN21]
Examples
>>> Lab = np.array([0.51634019, 0.15469500, 0.06289579]) >>> XYZ_to_ProLab(Lab) array([ 59.846628... , 115.039635... , 20.1251035...])