colour.models.eotf_BT2100_PQ

colour.models.eotf_BT2100_PQ(E_p: ArrayLike) → NDArrayFloat

Define Recommendation ITU-R BT.2100 Reference PQ electro-optical transfer function (EOTF).

The EOTF maps the non-linear PQ signal into display light.

Parameters:

E_p (ArrayLike) – \(E'\) denotes a non-linear colour value \({R', G', B'}\) or \({L', M', S'}\) in PQ space [0, 1].

Returns:

\(F_D\) is the luminance of a displayed linear component \({R_D, G_D, B_D}\) or \(Y_D\) or \(I_D\), in \(cd/m^2\).

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
E_p	UN	UN

Range	Scale - Reference	Scale - 1
F_D	UN	UN

References

[Bor17], [InternationalTUnion17]

Examples

>>> eotf_BT2100_PQ(0.724769816665726)  
779.9883608...