colour.quality.colour_fidelity_index_CIE2017

colour.quality.colour_fidelity_index_CIE2017(sd_test: colour.colorimetry.spectrum.SpectralDistribution, additional_data: bool = False) → float | colour.quality.cfi2017.ColourRendering_Specification_CIE2017

Return the CIE 2017 Colour Fidelity Index (CFI) \(R_f\) of given spectral distribution.

Parameters

• sd_test (colour.colorimetry.spectrum.SpectralDistribution) – Test spectral distribution.

• additional_data (bool) – Whether to output additional data.

Returns

CIE 2017 Colour Fidelity Index (CFI) \(R_f\).

Return type

float or colour.quality.ColourRendering_Specification_CIE2017

References

[CIET19017]

Examples

>>> from colour.colorimetry import SDS_ILLUMINANTS
>>> sd = SDS_ILLUMINANTS["FL2"]
>>> colour_fidelity_index_CIE2017(sd)  
70.1208244...