A psychophysical experiment was carried out to evaluate the glare, brightness, whiteness and hue composition of a glare source made by a multiple-channel LED lighting system. About 80 stimuli were produced to cover a large colour gamut at two luminance levels, 280 and 2400 cd/m2, respectively. The results were used to verify the earlier CAM15u colour appearance model and the QUGR glare model. A revised model, CAM15uz, is refined from CAM15u by adding an effect of hue to the prediction of brightness caused by the Helmholtz–Kohlrausch effect. In addition, a new hue composition scale is established.
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References
1.
WithouckMSmetKAGRyckaertWRHanselaerP. Experimental driven modelling of the color appearance of unrelated self-luminous stimuli: CAM15u. Optics Express2015; 23: 12045–12064.
2.
Commission Internationale de l’Eclairage. International Lighting Vocabulary. Vienna: CIE, 2011.
3.
BernsRSAlmanDHReniffLSnyderGDBalonon-RosenMB. Visual determination of suprathreshold color-difference tolerances using probit analysis. Color Research and Application1991; 16: 297–316.
4.
FairchildMDPirrottaEKimT. Successive-ganzfeld haploscopic viewing technique for color-appearance research. Color Research and Application1994; 19: 214–221.
5.
AyamaMNakatsueTKaiserPK. Constant hue loci of unique and binary balanced hues at 10, 100, and 1000 Td. Journal of the Optical Society of America A1987; 4: 1136–1144.
6.
GuthSL. Model for color vision and light adaptation. Journal of the Optical Society of America1991; 8: 976–993.
7.
BrenemanEJ. Corresponding chromaticities for different states of adaptation to complex visual fields. Journal of the Optical Society of America A1987; 4: 1115–1129.
FuCLiCCuiGLuoMRHuntRWGPointerMR. An investigation of colour appearance for unrelated colours under photopic and mesopic vision. Color Research and Application2012; 37: 238–254.
10.
YangYLuoMRMaSNLiuXY. Assessing glare. Part 1: Comparing uniform and non-uniform LED luminaires. Lighting Research and Technology2015; 49: 195–210.
11.
YangYLuoMRMaSN. Assessing glare. Part 2: Modifying Unified Glare Rating for uniform and non-uniform LED luminaires. Lighting Research and Technology2017; 49: 727–742.
12.
Yang Y, Luo MR, Huang WJ. Assessing glare, Part 3: Glare sources having different colours. Lighting Research and Technology. First published 6 December 2016. DOI: 1477153516676640.
13.
Yang Y, Luo MR, Huang WJ. Assessing glare, Part 4: Generic models predicting discomfort glare of light-emitting diodes. Lighting Research and Technology. First published 16 March 2017. DOI: 1477153516684376.
14.
FairchildMDPirrottaE. Predicting the lightness of chromatic object colors using CIELAB. Color Research and Application1991; 16: 385–393.
