colour.colour_fidelity_index¶
- colour.colour_fidelity_index(sd_test, additional_data=False, method='CIE 2017')[source]¶
Returns the Colour Fidelity Index (CFI) \(R_f\) of given spectral distribution using given method.
- Parameters
sd_test (SpectralDistribution) – Test spectral distribution.
additional_data (bool, optional) – Whether to output additional data.
method (unicode, optional) – {‘CIE 2017’, ‘ANSI/IES TM-30-18’}, Computation method.
- Returns
Colour Fidelity Index (CFI) \(R_f\).
- Return type
numeric or ColourRendering_Specification_CIE2017 or ColourQuality_Specification_ANSIIESTM3018
References
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Examples
>>> from colour.colorimetry import SDS_ILLUMINANTS >>> sd = SDS_ILLUMINANTS['FL2'] >>> colour_fidelity_index(sd) 70.1208254...