colour.models.eotf_BT1886#

colour.models.eotf_BT1886(V: FloatingOrArrayLike, L_B: float = 0, L_W: float = 1) FloatingOrNDArray[source]#

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

Parameters
  • V (FloatingOrArrayLike) – Input video signal level (normalised, black at \(V = 0\), to white at \(V = 1\). For content mastered per Recommendation ITU-R BT.709, 10-bit digital code values \(D\) map into values of \(V\) per the following equation: \(V = (D-64)/876\)

  • L_B (float) – Screen luminance for black.

  • L_W (float) – Screen luminance for white.

Returns

Screen luminance in \(cd/m^2\).

Return type

numpy.floating or numpy.ndarray

Notes

Domain

Scale - Reference

Scale - 1

V

[0, 1]

[0, 1]

Range

Scale - Reference

Scale - 1

L

[0, 1]

[0, 1]

References

[InternationalTUnion11a]

Examples

>>> eotf_BT1886(0.409007728864150)  
0.1169918...