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) # doctest: +ELLIPSIS 142.7683456...