colour.models.log_decoding_VLog

colour.models.log_decoding_VLog(V_out, bit_depth=10, in_normalised_code_value=True, out_reflection=True, constants={'b': 0.00873, 'c': 0.241514, 'cut1': 0.01, 'cut2': 0.181, 'd': 0.598206}, **kwargs)[source]

Defines the Panasonic V-Log log decoding curve / electro-optical transfer function.

Parameters:
  • V_out (numeric or array_like) – Non-linear data \(V_{out}\).
  • bit_depth (int, optional) – Bit depth used for conversion.
  • in_normalised_code_value (bool, optional) – Whether the non-linear Panasonic V-Log data \(V_{out}\) is encoded as normalised code values.
  • out_reflection (bool, optional) – Whether the light level :math`L_{in}` to a camera is reflection.
  • constants (Structure, optional) – Panasonic V-Log constants.
Other Parameters:
 

**kwargs (dict, optional) – Keywords arguments for deprecation management.

Returns:

Linear reflection data :math`L_{in}`.

Return type:

numeric or ndarray

Notes

Domain Scale - Reference Scale - 1
V_out [0, 1] [0, 1]
Range Scale - Reference Scale - 1
L_in [0, 1] [0, 1]

References

[Panasonic2014a]

Examples

>>> log_decoding_VLog(0.423311448760136)  # doctest: +ELLIPSIS
0.1799999...