colour.models.eotf_inverse_BT1886

colour.models.eotf_inverse_BT1886(L: FloatingOrArrayLike, L_B: float = 0, L_W: float = 1) → FloatingOrNDArray[source]

Define Recommendation ITU-R BT.1886 inverse electro-optical transfer function (EOTF).

Parameters

  • L (FloatingOrArrayLike) – Screen luminance in \(cd/m^2\).

  • L_B (float) – Screen luminance for black.

  • L_W (float) – Screen luminance for white.

Returns

Input video signal level (normalised, black at \(V = 0\), to white at \(V = 1\).

Return type

numpy.floating or numpy.ndarray

Notes

Domain

Scale - Reference

Scale - 1

L

[0, 1]

[0, 1]

Range

Scale - Reference

Scale - 1

V

[0, 1]

[0, 1]

References

[InternationalTUnion11a]

Examples

>>> eotf_inverse_BT1886(0.11699185725296059)  
0.4090077...

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