Color matches and observer variability: extending the CIE colorimetric system

Good color description starts with accurate color matching functions (CMFs) or cone fundamentals (CF). However, it has become increasingly apparent that there are substantial discrepancies between visual matches and the matches calculated using the 1931 (and 1964) CMFs defined by the International Commission on Illumination(CIE), especially for narrowband sources such as solid-state and laser based sources. Further research on CMF field size has also been recommended as the maximum viewing field size of the CIE CMFs is only 10°, which is not really representative of natural viewing conditions, such as in architectural interiors, where larger field sizes typically dominate. This PhD research project therefore aims to: 1) derive color matching data in visual experiments under various fixed contexts using different primaries and field sizes, 2) to investigate observer variability and possible observer categories, 3) to investigate correlations between match variability and the variability found in psychological color attributes and 4) if necessary to derive a new set of color matching functions. The research results will extend and improve the CIE colorimetric system leading to better color prediction in a wider range of scientific and practical applications.

Publication year:2022

Accessibility:Open