colour.models.log_decoding_SLog2

colour.models.log_decoding_SLog2(y: Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 1], bit_depth: int = 10, in_normalised_code_value: bool = True, out_reflection: bool = True) → Annotated[ndarray[tuple[Any, ...], dtype[float16 | float32 | float64]], 1]

Apply the Sony S-Log2 log decoding inverse opto-electronic transfer function (OETF).

Parameters:

• y (Annotated[_Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], 1]) – Sony S-Log2 non-linear encoded data \(y\).

• bit_depth (int) – Bit-depth used for conversion.

• in_normalised_code_value (bool) – Whether the Sony S-Log2 non-linear data \(y\) is encoded as normalised code values.

• out_reflection (bool) – Whether the output light level \(x\) represents reflection.

Returns:

Reflection or \(IRE / 100\) input light level \(x\) to a camera.

Return type:

numpy.ndarray

Notes

Domain	Scale - Reference	Scale - 1
y	1	1

Range	Scale - Reference	Scale - 1
x	1	1

References

[SonyCorporation12]

Examples

>>> log_decoding_SLog2(0.339532524633774)
0.1...