PMID: 11922136Apr 2, 2002Paper

Surface-illuminant ambiguity and color constancy: effects of scene complexity and depth cues

Perception
James M KraftD H Brainard

Abstract

Two experiments were conducted to study how scene complexity and cues to depth affect human color constancy. Specifically, two levels of scene complexity were compared. The low-complexity scene contained two walls with the same surface reflectance and a test patch which provided no information about the illuminant. In addition to the surfaces visible in the low-complexity scene, the high-complexity scene contained two rectangular solid objects and 24 paper samples with diverse surface reflectances. Observers viewed illuminated objects in an experimental chamber and adjusted the test patch until it appeared achromatic. Achromatic settings made tinder two different illuminants were used to compute an index that quantified the degree of constancy. Two experiments were conducted: one in which observers viewed the stimuli directly, and one in which they viewed the scenes through an optical system that reduced cues to depth. In each experiment, constancy was assessed for two conditions. In the valid-cue condition, many cues provided valid information about the illuminant change. In the invalid-cue condition, some image cues provided invalid information. Four broad conclusions are drawn from the data: (a) constancy is generally better...Continue Reading

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Citations

Apr 13, 2011·Journal of Experimental Psychology. Learning, Memory, and Cognition·Elizabeth C AllenSteven K Shevell
Sep 2, 2010·Neural Computation·Christian Wehrhahn, Harald J Teufel
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Nov 11, 2020·Journal of Vision·Rebecca Wedge-RobertsMaria Olkkonen
Feb 24, 2019·Vision Research·Robert Ennis, Katja Doerschner
Sep 23, 2021·Journal of Vision·Charlotte Falkenberg, Franz Faul

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