colour.models.log_decoding_Panalog#

colour.models.log_decoding_Panalog(y: FloatingOrArrayLike, black_offset: FloatingOrArrayLike = 10**64 - 681 / 444) → FloatingOrNDArray[source]#

Define the Panalog log decoding curve / electro-optical transfer function.

Parameters:

  • y (FloatingOrArrayLike) – Non-linear data \(y\).

  • black_offset (FloatingOrArrayLike) – Black offset.

Returns:

Linear data \(x\).

Return type:

numpy.floating or numpy.ndarray

Warning

These are estimations known to be close enough, the actual log encoding curves are not published.

Notes

Domain

Scale - Reference

Scale - 1

y

[0, 1]

[0, 1]

Range

Scale - Reference

Scale - 1

x

[0, 1]

[0, 1]

References

[SonyImageworks12]

Examples

>>> log_decoding_Panalog(0.374576791382298)  
0.1...