colour.models.oetf_inverse_BlackmagicFilmGeneration5

colour.models.oetf_inverse_BlackmagicFilmGeneration5(y, constants={'A': 0.08692876065491224, 'B': 0.005494072432257808, 'C': 0.5300133392291939, 'D': 8.283605932402494, 'E': 0.09246575342465753, 'LIN_CUT': 0.005})[source]

Defines the Blackmagic Film Generation 5 inverse opto-electronic transfer function (OETF / OECF).

Parameters
  • y (numeric or ndarray) – Ecoded value \(V\).

  • constants (Structure, optional) – Blackmagic Film Generation 5 constants.

Returns

Linear light value :math`x`.

Return type

numeric or array_like

Notes

Domain

Scale - Reference

Scale - 1

y

[0, 1]

[0, 1]

Range

Scale - Reference

Scale - 1

x

[0, 1]

[0, 1]

References

[BlackmagicDesign21]

Examples

>>> oetf_inverse_BlackmagicFilmGeneration5(0.38356164383561653)
... 
0.1799999...