colour.models.eotf_inverse_BT1886

colour.models.eotf_inverse_BT1886(L, L_B=0, L_W=1)[source]

Defines Recommendation ITU-R BT.1886 inverse electro-optical transfer function (EOTF / EOCF).

Parameters:
  • L (numeric or array_like) – Screen luminance in \(cd/m^2\).
  • L_B (numeric, optional) – Screen luminance for black.
  • L_W (numeric, optional) – Screen luminance for white.
Returns:

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

Return type:

numeric or ndarray

Notes

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

References

[InternationalTelecommunicationUnion2011h]

Examples

>>> eotf_inverse_BT1886(0.11699185725296059)  # doctest: +ELLIPSIS
0.4090077...