Parabolic achromatic color matching functions: Dependence on incremental and decremental luminance

Autor:	Michael E. Rudd, Osman Kavcar, Michael A. Crognale
Rok vydání:	2023
Předmět:	Computer Vision and Pattern Recognition Article Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials
Zdroj:	J Opt Soc Am A Opt Image Sci Vis
ISSN:	1520-8532 1084-7529 1534-7362
Popis:	Either the brightness or lightness of a disk surrounded by an annulus is characterized in the most general case by a parabolic function of the annulus luminance when plotted on a log–log scale. This relationship has been modeled with a theory of achromatic color computation based on edge integration and contrast gain control [J. Vis. 10, 1 (2010)1534-736210.1167/10.14.40]. We tested predictions of this model in new psychophysical experiments. Our results support the theory and reveal a previously unobserved property of parabolic matching functions that depends on the disk contrast polarity. We interpret this property in terms of a neural edge integration model incorporating data from macaque monkey physiology that indicates different physiological gain factors for incremental and decremental stimuli.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf5ba04f5c16cf539c5d78119e118fb4 https://doi.org/10.1364/josaa.478694 Zobrazit plný text záznamu