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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/35750

Title: All Effects of Psychophysical Variables on Color Attributes: A Classification System
Authors: Pridmore, Ralph W.
Melgosa Latorre, Manuel
Issue Date: 2015
Abstract: This paper reports the research and structuring of a classification system for the effects of psychophysical variables on the color attributes. A basic role of color science is to psychophysically specify color appearance. An early stage is to specify the effects of the psychophysical variables (as singles, pairs, etc) on the color attributes (as singles, pairs, etc), for example to model color appearance. Current data on effects are often scarce or conflicting. Few effects are well understood, and the practice of naming effects after their discoverer(s) is inadequate and can be confusing. The number and types of possible effects have never been systematically analyzed and categorized. We propose a simple and rigorous system of classification including nomenclature. The total range of effects is computed from the possible combinations of three psychophysical variables (luminance, dominant wavelength, purity) and six color attributes (lightness, brightness, hue, chroma, colorfulness, saturation) in all modes of appearance. Omitting those effects that are normally impossible to perceive at any one time (such as four- or five-dimensional colors), the total number perceivable is 161 types of effects for all modes of appearance. The type of effect is named after the psychophysical stimulus (or stimuli) and the relevant color attribute(s), e.g., Luminance-on-hue effect (traditionally known as Bezold-Brucke effect). Each type of effect may include slightly different effects with infinite variations depending on experimental parameters.
Sponsorship: M. Melgosa was supported by the Ministry of Economy and Competitiveness of the Government of Spain, research project FIS2013-40661-P, with the European Research Development Fund.
Publisher: Public Library of Science (PLOS)
Keywords: Classification system
Psychophysical variables
Color attributes
URI: http://hdl.handle.net/10481/35750
ISSN: 1932-6203
Citation: Pridmore, R.W.; Melgosa Latorre, M. All Effects of Psychophysical Variables on Color Attributes: A Classification System. Plos One, 10(4): e0119024 (2015). [http://hdl.handle.net/10481/35750]
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