colour.models.log_encoding_REDLog

colour.models.log_encoding_REDLog(x, black_offset=0.009955040995908344)[source]

Defines the REDLog log encoding curve / opto-electronic transfer function.

Parameters:
  • x (numeric or array_like) – Linear data \(x\).
  • black_offset (numeric or array_like) – Black offset.
Returns:

Non-linear data \(y\).
Return type:

numeric or ndarray

Notes

Domain Scale - Reference Scale - 1
x [0, 1] [0, 1]
Range Scale - Reference Scale - 1
y [0, 1] [0, 1]

References

[SonyImageworks12]

Examples

>>> log_encoding_REDLog(0.18)  # doctest: +ELLIPSIS
0.6376218...