colour.oetf#

colour.oetf(value: ArrayLike, function: LiteralOETF | str = 'ITU-R BT.709', **kwargs: Any) → NDArrayFloat[source]#

Apply the specified opto-electronic transfer function (OETF).

Parameters:

value (ArrayLike) – Scene-linear value.
function (LiteralOETF | str) – Opto-electronic transfer function (OETF).
kwargs (Any) – {colour.models.oetf_ARIBSTDB67(), colour.models.oetf_BlackmagicFilmGeneration5(), colour.models.oetf_DaVinciIntermediate(), colour.models.oetf_BT2020(), colour.models.oetf_BT2100_HLG(), colour.models.oetf_BT2100_PQ(), colour.models.oetf_BT601(), colour.models.oetf_BT709(), colour.models.oetf_SMPTE240M()}, See the documentation of the previously listed definitions.

Returns:

Non-linear signal value.

Return type:

numpy.ndarray

Examples

>>> oetf(0.18)
np.float64(0.4090077...)
>>> oetf(0.18, function="ITU-R BT.601")
np.float64(0.4090077...)