colour.XYZ_to_Luv¶
-
colour.
XYZ_to_Luv
(XYZ, illuminant=array([ 0.3127, 0.329 ]))[source]¶ Converts from CIE XYZ tristimulus values to CIE L*u*v* colourspace.
- Parameters
XYZ (array_like) – CIE XYZ tristimulus values.
illuminant (array_like, optional) – Reference illuminant CIE xy chromaticity coordinates or CIE xyY colourspace array.
- Returns
CIE L*u*v* colourspace array.
- Return type
ndarray
Notes
Domain
Scale - Reference
Scale - 1
XYZ
[0, 1]
[0, 1]
illuminant
[0, 1]
[0, 1]
Range
Scale - Reference
Scale - 1
Luv
L
: [0, 100]u
: [-100, 100]v
: [-100, 100]L
: [0, 1]u
: [-1, 1]v
: [-1, 1]References
Examples
>>> XYZ = np.array([0.20654008, 0.12197225, 0.05136952]) >>> XYZ_to_Luv(XYZ) array([ 41.5278752..., 96.8362605..., 17.7521014...])