colour.colorimetry.lightness_Fairchild2011¶
- colour.colorimetry.lightness_Fairchild2011(Y: FloatingOrArrayLike, epsilon: FloatingOrArrayLike = 0.474, method: Union[Literal['hdr-CIELAB', 'hdr-IPT'], str] = 'hdr-CIELAB') FloatingOrNDArray [source]¶
Compute Lightness \(L_{hdr}\) of given luminance \(Y\) using Fairchild and Chen (2011) method according to Michaelis-Menten kinetics.
- Parameters
- Returns
Lightness \(L_{hdr}\).
- Return type
Notes
Domain
Scale - Reference
Scale - 1
Y
[0, 1]
[0, 1]
Range
Scale - Reference
Scale - 1
L_hdr
[0, 100]
[0, 1]
References
[FC11]
Examples
>>> lightness_Fairchild2011(12.19722535 / 100) 51.8529584... >>> lightness_Fairchild2011(12.19722535 / 100, method='hdr-IPT') ... 51.6431084...