colour.colorimetry.luminance_Fairchild2011#
- colour.colorimetry.luminance_Fairchild2011(L_hdr: ArrayLike, epsilon: ArrayLike = 0.474, method: Literal['hdr-CIELAB', 'hdr-IPT'] | str = 'hdr-CIELAB') NDArrayFloat [source]#
Compute luminance \(Y\) of given Lightness \(L_{hdr}\) using Fairchild and Chen (2011) method according to Michaelis-Menten kinetics.
- Parameters:
L_hdr (ArrayLike) – Lightness \(L_{hdr}\).
epsilon (ArrayLike) – \(\epsilon\) exponent.
method (Literal['hdr-CIELAB', 'hdr-IPT'] | str) – Lightness \(L_{hdr}\) computation method.
- Returns:
Luminance \(Y\).
- Return type:
Notes
Domain
Scale - Reference
Scale - 1
L_hdr
[0, 100]
[0, 1]
Range
Scale - Reference
Scale - 1
Y
[0, 1]
[0, 1]
References
[FC11]
Examples
>>> luminance_Fairchild2011(51.852958445912506) 0.1219722... >>> luminance_Fairchild2011(51.643108411718522, method="hdr-IPT") ... 0.1219722...