colour.colorimetry.whiteness_Stensby1968¶
-
colour.colorimetry.
whiteness_Stensby1968
(Lab)[source]¶ Returns the whiteness index \(WI\) of given sample CIE L*a*b* colourspace array using Stensby (1968) method.
- Parameters
Lab (array_like) – CIE L*a*b* colourspace array of sample.
- Returns
Whiteness \(WI\).
- Return type
numeric or ndarray
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]Range
Scale - Reference
Scale - 1
WI
[0, 100]
[0, 1]
Whiteness \(WI\) values larger than 100 indicate a bluish white and values smaller than 100 indicate a yellowish white.
References
Examples
>>> import numpy as np >>> Lab = np.array([100.00000000, -2.46875131, -16.72486654]) >>> whiteness_Stensby1968(Lab) 142.7683456...