Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/50011

TitleColour rendering of indoor lighting with CIE illuminants and white LEDs for normal and colour deficient observers
Author(s)Linhares, João M. M.
Felgueiras, Paulo Eduardo Reis
Pinto, Paulo Filipe Salgado
Nascimento, Sérgio M. C.
KeywordsColour deficiencies
Colour gamut
Colour rendering
Colour vision
Illumination
Issue date1-Sep-2010
PublisherWiley-Blackwell
JournalOphthalmic and Physiological Optics
CitationLinhares, J. M., Felgueiras, P. E., Pinto, P. D., & Nascimento, S. M. C. (2010). Colour rendering of indoor lighting with CIE illuminants and white LEDs for normal and colour deficient observers. Ophthalmic and Physiological Optics, 30(5), 618-625
Abstract(s)The goal of this work was to evaluate the colour rendering of indoor lighting with CIE illuminants and white LEDs by estimating the chromatic diversity produced for normal and colour deficient observers. Reflectance spectra of a collection of scenes made of objects typically found indoors were obtained with hyperspectral imaging. Chromatic diversity was computed for 55 CIE illuminants and five LED light sources by estimating the number of different colours perceived in the scenes analysed. A considerable variation in chromatic diversity was found across illuminants, with the best producing about 50% more colours than the worst. For normal observers, the best illuminant was CIE FL3.8 which produced about 8% more colours than CIE illuminant A and D 65 ; for colour deficient observers, the best illuminants varied with the type of deficiency. When the number of colours produced with a specific illuminant was compared against its colour rendering index (CRI) and gamut area index (GAI), weak correlations were obtained. Together, these results suggest that normal and colour deficient observers may benefit from a careful choice of the illuminant, and this choice may not necessarily be based only on the CRI or GAI. © 2010 The Authors, Ophthalmic and Physiological Optics © 2010 The College of Optometrists.
TypeArticle
DescriptionDraft
URIhttp://hdl.handle.net/1822/50011
DOI10.1111/j.1475-1313.2010.00741.x
ISSN0275-5408
e-ISSN1475-1313
Publisher versionhttp://onlinelibrary.wiley.com/doi/10.1111/j.1475-1313.2010.00741.x/full
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CDF - OCV - Artigos/Papers (with refereeing)

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