colour.models.eotf_ST2084

colour.models.eotf_ST2084(N, L_p=10000)

Defines SMPTE ST 2084:2014 optimised perceptual electro-optical transfer function (EOTF / EOCF).

This perceptual quantizer (PQ) has been modeled by Dolby Laboratories using Barten (1999) contrast sensitivity function.

Parameters:

• N (numeric or array_like) – Color value abbreviated as \(N\), normalized to the range [0, 1], that is directly proportional to the encoded signal representation, and which is not directly proportional to the optical output of a display device.
• L_p (numeric, optional) – Display peak luminance \(cd/m^2\).

Returns:

Target optical output \(C\) in \(cd/m^2\) of the ideal reference display.

Return type:

numeric or ndarray

References

• [MDolbyLaboratories14]
• [SocietyoMPaTEngineers14]

Examples

>>> eotf_ST2084(0.508078421517399)  
100.0000000...