colour.models.oetf_BT601

colour.models.oetf_BT601(L: ArrayLike) → NDArrayFloat

Define Recommendation ITU-R BT.601-7 opto-electronic transfer function (OETF).

Parameters:

L (ArrayLike) – Luminance \(L\) of the image.

Returns:

Corresponding electrical signal \(E\).

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
L	[0, 1]	[0, 1]

Range	Scale - Reference	Scale - 1
E	[0, 1]	[0, 1]

References

[InternationalTUnion11b]

Examples

>>> oetf_BT601(0.18)  
0.4090077...