colour.colorimetry.yellowness_ASTME313¶
-
colour.colorimetry.
yellowness_ASTME313
(XYZ)[source]¶ Returns the yellowness index \(YI\) of given sample CIE XYZ tristimulus values using ASTM E313 method.
ASTM E313 has successfully been used for a variety of white or near white materials. This includes coatings, Plastics, Textiles.
- Parameters
XYZ (array_like) – CIE XYZ tristimulus values of sample.
- Returns
Whiteness \(YI\).
- Return type
numeric or ndarray
Notes
Domain
Scale - Reference
Scale - 1
XYZ
[0, 100]
[0, 1]
Range
Scale - Reference
Scale - 1
YI
[0, 100]
[0, 1]
References
Examples
>>> import numpy as np >>> XYZ = np.array([95.00000000, 100.00000000, 105.00000000]) >>> yellowness_ASTME313(XYZ) 11.0650000...