colour.log_encoding¶
- colour.log_encoding(value: Union[float, numpy.typing._array_like._SupportsArray[numpy.dtype], numpy.typing._nested_sequence._NestedSequence[numpy.typing._array_like._SupportsArray[numpy.dtype]], bool, int, complex, str, bytes, numpy.typing._nested_sequence._NestedSequence[Union[bool, int, float, complex, str, bytes]]], function: Union[Literal['ACEScc', 'ACEScct', 'ACESproxy', 'ALEXA Log C', 'Canon Log 2', 'Canon Log 3', 'Canon Log', 'Cineon', 'D-Log', 'ERIMM RGB', 'F-Log', 'Filmic Pro 6', 'Log2', 'Log3G10', 'Log3G12', 'N-Log', 'PLog', 'Panalog', 'Protune', 'REDLog', 'REDLogFilm', 'S-Log', 'S-Log2', 'S-Log3', 'T-Log', 'V-Log', 'ViperLog'], str] = 'Cineon', **kwargs: Any) Union[float, numpy.ndarray, int] [source]¶
Encode scene-referred exposure values to \(R'G'B'\) video component signal value using given log encoding function.
- Parameters
value (Union[float, numpy.typing._array_like._SupportsArray[numpy.dtype], numpy.typing._nested_sequence._NestedSequence[numpy.typing._array_like._SupportsArray[numpy.dtype]], bool, int, complex, str, bytes, numpy.typing._nested_sequence._NestedSequence[Union[bool, int, float, complex, str, bytes]]]) – Scene-referred exposure values.
function (Union[Literal['ACEScc', 'ACEScct', 'ACESproxy', 'ALEXA Log C', 'Canon Log 2', 'Canon Log 3', 'Canon Log', 'Cineon', 'D-Log', 'ERIMM RGB', 'F-Log', 'Filmic Pro 6', 'Log2', 'Log3G10', 'Log3G12', 'N-Log', 'PLog', 'Panalog', 'Protune', 'REDLog', 'REDLogFilm', 'S-Log', 'S-Log2', 'S-Log3', 'T-Log', 'V-Log', 'ViperLog'], str]) – Log encoding function.
kwargs (Any) – {
colour.models.log_encoding_ACEScc()
,colour.models.log_encoding_ACEScct()
,colour.models.log_encoding_ACESproxy()
,colour.models.log_encoding_ALEXALogC()
,colour.models.log_encoding_CanonLog2()
,colour.models.log_encoding_CanonLog3()
,colour.models.log_encoding_CanonLog()
,colour.models.log_encoding_Cineon()
,colour.models.log_encoding_DJIDLog()
,colour.models.log_encoding_ERIMMRGB()
,colour.models.log_encoding_FLog()
,colour.models.log_encoding_FilmicPro6()
,colour.models.log_encoding_Log2()
,colour.models.log_encoding_Log3G10()
,colour.models.log_encoding_Log3G12()
,colour.models.log_encoding_NLog()
,colour.models.log_encoding_PivotedLog()
,colour.models.log_encoding_Panalog()
,colour.models.log_encoding_Protune()
,colour.models.log_encoding_REDLog()
,colour.models.log_encoding_REDLogFilm()
,colour.models.log_encoding_SLog()
,colour.models.log_encoding_SLog2()
,colour.models.log_encoding_SLog3()
,colour.models.log_encoding_FilmLightTLog()
,colour.models.log_encoding_VLog()
,colour.models.log_encoding_ViperLog()
}, See the documentation of the previously listed definitions.
- Returns
Log values.
- Return type
Examples
>>> log_encoding(0.18) 0.4573196... >>> log_encoding(0.18, function='ACEScc') 0.4135884... >>> log_encoding(0.18, function='PLog', log_reference=400) ... 0.3910068... >>> log_encoding(0.18, function='S-Log') 0.3849708...