colour.models.oetf_inverse_BT2100_PQ

colour.models.oetf_inverse_BT2100_PQ(E_p: ArrayLike) → NDArrayFloat

Apply the Recommendation ITU-R BT.2100 Reference PQ inverse opto-electrical transfer function (OETF).

Parameters:

E_p (ArrayLike) – \(E'\) denotes the non-linear signal \(\{R', G', B'\}\).

Returns:

\(E = \{R_S, G_S, B_S; Y_S; \text{or } I_S\}\) denotes the signal determined by scene light and scaled by camera exposure.

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
E_p	UN	UN

Range	Scale - Reference	Scale - 1
E	UN	UN

References

[Bor17], [InternationalTUnion17]

Examples

>>> oetf_inverse_BT2100_PQ(0.724769816665726)
0.0999999...