Psychophysical estimation of the best lighting for commercial counters of fruits and vegetables
The aim of this work was to estimate psychophysically the spectral composition of the best lighting for commercial food counters. Stimuli were monitor simulations of commercial food counters containing fruits and vegetables derived from hyperspectral data obtained in a local supermarket. Illuminants were synthetized from Judd's daylight spectral basis functions with variable coefficients such that their color defined a chromaticity grid over and around Planckian locus with correlated color temperature (CCT) in the range 2,222—20,000 K. Two conditions were tested: in one, the naturalness condition, observers selected the illuminant producing the most natural colors; in the other, the preference condition, observers selected the illuminant producing the most pleasant appearance.
The average CCT in the preference condition was significantly lower than that obtained in the naturalness condition, by about 2,400 K. The average chromaticity of each condition was closer to the Planckian locus than to the daylight locus.
Document Type: Research Article
Publication date: January 1, 2012
Started in 2002 and merged with the Color and Imaging Conference (CIC) in 2014, CGIV covered a wide range of topics related to colour and visual information, including color science, computational color, color in computer graphics, color reproduction, volor vision/psychophysics, color image quality, color image processing, and multispectral color science. Drawing papers from researchers, scientists, and engineers worldwide, DGIV offered attendees a unique experience to share with colleagues in industry and academic, and on national and international standards committees. Held every year in Europe, DGIV papers were more academic in their focus and had high student participation rates.
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