colour.colour_fidelity_index¶
- colour.colour_fidelity_index(sd_test: SpectralDistribution, additional_data=False, method: Union[Literal['CIE 2017', 'ANSI/IES TM-30-18'], str] = 'CIE 2017') Union[Floating, ColourRendering_Specification_CIE2017, ColourQuality_Specification_ANSIIESTM3018] [source]¶
Return the Colour Fidelity Index (CFI) \(R_f\) of given spectral distribution using given method.
- Parameters
sd_test (SpectralDistribution) – Test spectral distribution.
additional_data – Whether to output additional data.
method (Union[Literal[('CIE 2017', 'ANSI/IES TM-30-18')], str]) – Computation method.
- Returns
Colour Fidelity Index (CFI) \(R_f\).
- Return type
numpy.floating
orcolour.quality.ColourRendering_Specification_CIE2017
orcolour.quality.ColourQuality_Specification_ANSIIESTM3018
References
[CIET19017], [ANSIIESCCommittee18]
Examples
>>> from colour.colorimetry import SDS_ILLUMINANTS >>> sd = SDS_ILLUMINANTS['FL2'] >>> colour_fidelity_index(sd) 70.1208254...