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 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) # doctest: +ELLIPSIS array([ 41.5278752..., 96.8362605..., 17.7521014...])