colour.models.eotf_PQ_BT2100

colour.models.eotf_PQ_BT2100(E_p)[source]

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

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

Parameters

E_p (numeric or array_like) – \(E'\) 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

numeric or ndarray

Notes

Domain

Scale - Reference

Scale - 1

E_p

[0, 1]

[0, 1]

Range

Scale - Reference

Scale - 1

F_D

[0, 1]

[0, 1]

References

[Bor17], [InternationalTUnion17]

Examples

>>> eotf_PQ_BT2100(0.724769816665726)  
779.9883608...