CRI2012: A proposal for updating the CIE colour rendering index

The CIE colour rendering index (CRI) has been criticized for its poor correlation with the visual colour rendering of many spiked or narrowband sources, its outdated colour space and chromatic adaptation transform and the use of a small number of non-optimal reflectance samples that have enabled lam...

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Bibliographic Details
Published inLighting research & technology (London, England : 2001) Vol. 45; no. 6; pp. 689 - 709
Main Authors Smet, KAG, Schanda, J, Whitehead, L, Luo, RM
Format Journal Article
LanguageEnglish
Published London, England SAGE Publications 01.12.2013
Sage Publications Ltd
Subjects
Color
Colour
Illumination
Lighting
Mathematical models
Reflectance
Reflectivity
Rendering
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Summary:The CIE colour rendering index (CRI) has been criticized for its poor correlation with the visual colour rendering of many spiked or narrowband sources, its outdated colour space and chromatic adaptation transform and the use of a small number of non-optimal reflectance samples that have enabled lamp manufacturers to tune the spectrum of a light source to yield, in some cases, inappropriately high general CRI values. The CRI2012 metric proposed in this paper addresses these criticisms by combining the most state of the art colorimetric colour difference model, i.e. CAM02-UCS, with a mathematical reflectance set that exhibits a highly uniform spectral sensitivity. A set of 210 real reflectance samples has also been selected to provide additional information on the expected colour shifts when changing illumination.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1477-1535
1477-0938
DOI:10.1177/1477153513481375