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The Watercolor illusion and neon color spreading: a unified analysis of new cases and neural mechanisms

Pinna, Baingio and Grossberg, Stephen (2005) The Watercolor illusion and neon color spreading: a unified analysis of new cases and neural mechanisms. Journal of the Optical Society of America A, Vol. 22 (10), p. 2207-2221. ISSN 1520-8532. Article.

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DOI: 10.1364/JOSAA.22.002207

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Abstract

Coloration and figural properties of neon color spreading and the watercolor illusion are studied using phenomenal and psychophysical observations. Coloration properties of both effects can be reduced to a common limiting condition, a nearby color transition called the two-dot limiting case, which clarifies their perceptual similarities and dissimilarities. The results are explained by the FACADE neural model of biological vision. The model proposes how local properties of color transitions activate spatial competition among nearby perceptual boundaries, with boundaries of lower-contrast edges weakened by competition more than boundaries of higher-contrast edges. This asymmetry induces spreading of more color across these boundaries than conversely. The model also predicts how depth and figure-ground effects are generated in these illusions.

Item Type:Article
ID Code:2395
Status:Published
Refereed:Yes
Uncontrolled Keywords:Visual optics, color vision, vision modeling, perception psychology, FACADE neural model
Subjects:Area 11 - Scienze storiche, filosofiche, pedagogiche e psicologiche > M-PSI/01 Psicologia generale
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze dei linguaggi
Publisher:Optical Society of America
ISSN:1520-8532
Deposited On:18 Aug 2009 10:07

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