colour.colorimetry.whiteness_ASTME313¶
-
colour.colorimetry.
whiteness_ASTME313
(XYZ)[source]¶ Returns the whiteness index \(WI\) of given sample CIE XYZ tristimulus values using ASTM E313 method.
Parameters: XYZ (array_like) – CIE XYZ tristimulus values of sample. Returns: Whiteness \(WI\). Return type: numeric or ndarray Notes
Domain Scale - Reference Scale - 1 XYZ
[0, 100] [0, 1] Range Scale - Reference Scale - 1 WI
[0, 100] [0, 1] References
Examples
>>> import numpy as np >>> XYZ = np.array([95.00000000, 100.00000000, 105.00000000]) >>> whiteness_ASTME313(XYZ) # doctest: +ELLIPSIS 55.7400000...