colour.colorimetry.luminance_Fairchild2011¶
-
colour.colorimetry.
luminance_Fairchild2011
(L_hdr, epsilon=0.474, method='hdr-CIELAB')[source]¶ Computes luminance \(Y\) of given Lightness \(L_{hdr}\) using Fairchild and Chen (2011) method according to Michealis-Menten kinetics.
- Parameters
L_hdr (array_like) – Lightness \(L_{hdr}\).
epsilon (numeric or array_like, optional) – \(\epsilon\) exponent.
method (unicode, optional) – {‘hdr-CIELAB’, ‘hdr-IPT’}, Lightness \(L_{hdr}\) computation method.
- Returns
luminance \(Y\).
- Return type
array_like
Notes
Domain
Scale - Reference
Scale - 1
L_hdr
[0, 100]
[0, 1]
Range
Scale - Reference
Scale - 1
Y
[0, 1]
[0, 1]
References
Examples
>>> luminance_Fairchild2011(51.852958445912506) 0.1219722... >>> luminance_Fairchild2011(51.643108411718522, method='hdr-IPT') ... 0.1219722...