colour.eotf¶

colour.eotf(value, function='ITU-R BT.1886', **kwargs)[source]¶

Decodes \(R'G'B'\) video component signal value to tristimulus values at the display using given electro-optical transfer function (EOTF / EOCF).

Other Parameters:
Parameters:	value (numeric or array_like) – Value. function (unicode, optional) – {‘ITU-R BT.1886’, ‘DCDM’, ‘DICOM GSDF’, ‘ITU-R BT.2020’, ‘ITU-R BT.2100 HLG’, ‘ITU-R BT.2100 PQ’, ‘ProPhoto RGB’, ‘RIMM RGB’, ‘ROMM RGB’, ‘SMPTE 240M’, ‘ST 2084’}, Electro-optical transfer function (EOTF / EOCF).
	E_clip (numeric, optional) – {`colour.models.eotf_RIMMRGB()`}, Maximum exposure level. I_max (numeric, optional) – {`colour.models.eotf_ROMMRGB()`, `colour.models.eotf_RIMMRGB()`}, Maximum code value: 255, 4095 and 650535 for respectively 8-bit, 12-bit and 16-bit per channel. L_B (numeric, optional) – {`colour.models.eotf_BT1886()`, `colour.models.eotf_BT2100_HLG()`}, Screen luminance for black. L_W (numeric, optional) – {`colour.models.eotf_BT1886()`, `colour.models.eotf_BT2100_HLG()`}, Screen luminance for white. L_p (numeric, optional) – {`colour.models.eotf_ST2084()`}, Display peak luminance \(cd/m^2\). gamma (numeric, optional) – {`colour.models.eotf_BT2100_HLG()`}, System gamma value, 1.2 at the nominal display peak luminance of \(1000 cd/m^2\). is_12_bits_system (bool) – {`colour.models.eotf_BT2020()`}, ITU-R BT.2020 alpha and beta constants are used if system is not 12-bit.
Returns:	Tristimulus values at the display.
Return type:	numeric or ndarray

Examples

>>> eotf(0.461356129500442)  # doctest: +ELLIPSIS
0.1...
>>> eotf(0.409007728864150, function='ITU-R BT.2020')
... # doctest: +ELLIPSIS
0.1...
>>> eotf(0.182011532850008, function='ST 2084', L_p=1000)
... # doctest: +ELLIPSIS
0.1...