colour.colorimetry.luminance_Fairchild2010

colour.colorimetry.luminance_Fairchild2010(L_hdr: Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 100], epsilon: ArrayLike = 1.836) → Annotated[ndarray[tuple[Any, ...], dtype[float16 | float32 | float64]], 1]

Compute luminance \(Y\) from the specified lightness \(L_{hdr}\) using Fairchild and Wyble (2010) method according to Michaelis-Menten kinetics.

Parameters:

• L_hdr (Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 100]) – Lightness \(L_{hdr}\).

• epsilon (ArrayLike) – \(\epsilon\) exponent.

Returns:

Luminance \(Y\).

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
L_hdr	100	1

Range	Scale - Reference	Scale - 1
Y	1	1

References

[FW10]

Examples

>>> luminance_Fairchild2010(31.996390226262736, 1.836)
...
0.1219722...