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Advancements in Colour Rendering Research: Evaluating LED Sources and Colour Appearance

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This research explores advancements in colour rendering by evaluating various LED light sources. Utilizing the CIECAM02 model, we investigate colour appearance, fidelity, and preference to enhance the understanding and effectiveness of daylight simulators. The studies presented were conducted at the University of Leeds, with publications from notable conferences including the AIC Colour Congress and the Color Imaging Conference. The findings indicate significant implications for industries relying on accurate colour representation, such as design and visual technologies.

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Advancements in Colour Rendering Research: Evaluating LED Sources and Colour Appearance

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  1. Colour Rendering Research at Leeds • Apparatus • Colour rendering experiment • Colour appearance • Colour fidelity • Colour harmony • Colour preference • Proposal • CRI-CAM02-UCS

  2. Apparatus

  3. Experiments

  4. Publications LED • C. Li, H. S. Xu, C.J. Li and M.R. Luo, Characterisation of LED Panel, The 10th Congress of the International Colour Association (AIC Colour’05), Granada, Spain 283-286 (May, 2005) • C. Li, M. R. Luo and C. J. Li, Quality of LED based daylight simulators, CGIV 2006, University of Leeds, UK, 247-250 (June, 2006). Colour appearance • C. Li, M.R. Luo and C.J. Li, Evaluation of LED sources based on colour appearance data, CIE 178:2007, CIE 26th Session Proceedings, Vol.1, D1-162, Beijing, 2007 (July, 2007). • C. Li, M.R. Luo and C.J. Li, Evaluation of light sources based on colour appearance and colour preference assessments, AIC Color 2007, Colour science for industry, Hangzhou, pp339-341 (July, 2007). Colour fidelity • C. Li, M. R. Luo and C. Li, Evaluation of light sources based on visual colour rendering, The 16th Color Imaging Conference, IS&T and SID, Portland, Oregon 201-204 (November, 2008). Colour preference • C. Li, M.R. Luo and C.J. Li, Evaluation of light sources based on colour appearance and colour preference assessments, AIC Color 2007, Colour science for industry, Hangzhou, pp339-341 (July, 2007). Colour harmony

  5. A universal modelCIECAM02 La Yb Surround X Y Z Chromatic adaptation R G B Dynamic Transform Ra Ga Ba Colour signal transform J Q M C s H h Uniform Colour Space Colour appearance space CAM02-LCD CAM02-UCS CAM02-SCD J’ M’ h J C H Q M H

  6. CIECAM02 CIECAM02 CRI-CAM02UCS Test Reference Equal Source Illuminant CCT CIE test XYZ XYZ k,i r,i samples ( J ? , ? a , b ? ) ( J ? , ? a , b ? ) M M r ,i M M k ,i k,i k,i r ,i ΔE ? i CRI - CAM02UCS CRI-CAM02UCS CIE CRI

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