colour.colorimetry.whiteness_ASTME313

colour.colorimetry.whiteness_ASTME313(XYZ)

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

Warning

The input domain of that definition is non standard!

Notes

• Input CIE XYZ tristimulus values are in domain [0, 100].

References

• [XRP12]

Examples

>>> XYZ = np.array([95.00000000, 100.00000000, 105.00000000])
>>> whiteness_ASTME313(XYZ)  
55.7400000...