Failures of lightness constancy, edge integration, and local edge enhancement.
In a CRT simulation of the "edge-substitution" paradigm [Gilchrist (1988) Perception & Psychophysics, 43, 415-424], observers adjusted the apparent reflectance (lightness) of a test surface to match incremental or decremental standards. Matches suggested that two factors contributed to the observed failures of lightness constancy: (1) the interpretation of the scene in terms of illumination and reflectance edges and their corresponding integration, and (2) edge-enhancement (the "crispening" effect) due to the local surround.
Bruno
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Dipartimento di Psicologia, Universitá di Trieste, Italy.
D000328:Adult; D015350:Contrast Sensitivity; D005556:Form Perception / Q000502:physiology; D006801:Humans; D008027:Light; D008029:Lighting; D014796:Visual Perception / Q000502:physiology*