colour.colorimetry.luminance_Fairchild2010

colour.colorimetry.luminance_Fairchild2010(L_hdr, epsilon=1.836)

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

• Output luminance \(Y\) is in range [0, math:infty].

References

• [FW10]

Examples

>>> luminance_Fairchild2010(24.902290269546651, 1.836)
... 
0.1007999...