Light & Engineering 28 (3)
Volume 28
Date of publication 06/01/2020
Pages 37–46
PDF
Weighting the Relevance of the Different Colours in Subjective Assessments of Colour Preference. L&E 28 (3) 2020
Articles authors:
Peter Bodrogi, Diana Carella, Tran Quoc Khanh
Peter Bodrogi, Dr. He is Optoelectronic Engineer at ERCO GmbH, Lüdenscheid, Germany. He studied physics at the Lorand Eotvos University in Budapest, Hungary. He obtained his Ph.D. degree in Information Technology from the University of Pannonia (Veszprém, Hungary). He obtained his Lecture Qualification Thesis (habilitation) in Lighting Engineering from the Technische Universität Darmstadt (Darmstadt, Germany). His interests concern lighting engineering, colorimetry, colour science, modern software technologies and LED lighting systems
Diana Carella studied Physics at the Technical University Darmstadt (Germany), between 15 January 2013 and 5 October 2017, she was research assistant at the Laboratory of Lighting Technology of the Technical University Darmstadt (Germany), and she is currently lighting engineer at the VDE Test Institute in Offenbach (Germany)
Tran Quoc Khanh, Dr., Prof. He is studied from 1980 to 1985 Machine Engineering and Technical Optics before he finished his Ph.D. thesis on the Spectroscopy of UV‑VIS Radiation Sources in 1989. Between 1990–1997 and 1997–1999, he was laboratory leader and project manager for photometry, radiometry and colorimetry at PRC Krochmann and Gigahertz Optik. Between 2000 and 2006, he was technical manager for optical imaging systems at ARRI, developed a digital CMOS camera, a film scanner and a laser recorder and optimized colour image processing for cinematography and TV signal processing. In 2005, he completed his Lecture Qualified Thesis (habilitation) on colour appearance and visual performance and started his current work as a Professor for Lighting Technology and Solid‑State Lighting at the Technische Universität Darmstadt. He is conducting research and development projects on LED lighting technology. He is also the Chairman of the International Symposium for Automotive Lighting (ISAL). He is author of several books and scientific articles and inventor of patents on lighting technology and related subjects. He is currently Dean of the Department of Electrical Engineering and Information Technology at the Technische Universität Darmstadt
Abstract:
Observers made subjective colour preference judgements about different arrangements of coloured objects in different scenes. While doing so, observers had to assess the importance (so-called weight) of every one of seven colour groups or hue groups (skin tone, red, orange, yellow, green, blue and purple). The scenes were illuminated by high-CRI spectra at four different correlated colour temperatures (CCTs). Red and orange obtained the highest weights (this means that red and orange are the most important colours for subjective colour preference); yellow, green and blue were intermediate while skin tone had only a little weight. CCT had only a small effect while scene content (e.g. “office” vs. “painting”) had a strong influence. Objects of higher chromaticity in the same colour group obtained a higher weight across the different scenes. Latter finding resulted into a predicting formula of the weights.
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Number of images - 8
Tables and charts - 6
