A series of visual experiments were designed to determine whether naive observers typically evaluate chroma or colorfulness when judging color appearance. A total of 7 observers were asked to determine a color appearance match between Munsell samples under the same illuminant (C) at different levels of illuminance. Color appearance matches were determined for 12 Munsell samples, under five reference and matching scene illuminance conditions, for four experimental techniques. The four experimental techniques were haploscopic, simultaneous inspection, successive inspection, and short-term memory matching. Results suggested that a chroma match was most important when observers were evaluating the color appearance of two scenes at different levels of illuminance. Results were also compared to predictions of two color appearance models. While similar trends were apparent between the experimental results and the two model's predictions, only the Hunt model's chroma term satisfactorily predicted experimental observations.
Library of Congress Subject Headings
Color vision; Visual perception
Department, Program, or Center
Chester F. Carlson Center for Imaging Science (COS)
Peterson, Jason, "Visual assessment of object color chroma and colorfulness" (1994). Thesis. Rochester Institute of Technology. Accessed from
RIT – Main Campus