colour.colorimetry.luminance_Fairchild2010

colour.colorimetry.luminance_Fairchild2010(L_hdr, epsilon=1.836)[source]

Computes luminance \(Y\) of given Lightness \(L_{hdr}\) using Fairchild and Wyble (2010) method according to Michealis-Menten kinetics.

Parameters:
  • L_hdr (array_like) – Lightness \(L_{hdr}\).
  • epsilon (numeric or array_like, optional) – \(\epsilon\) exponent.
Returns:

luminance \(Y\).
Return type:

array_like

Warning

The output range of that definition is non standard!

Notes

Domain Scale - Reference Scale - 1
L_hdr [0, 100] [0, 1]
Range Scale - Reference Scale - 1
Y [0, 1] [0, 1]

References

[FW10]

Examples

>>> luminance_Fairchild2010(31.996390226262736, 1.836)
... # doctest: +ELLIPSIS
0.1219722...