Constructing surfaces and contours in displays of color from motion: the role of nearest neighbors and maximal disks.
Color-from-motion displays consist of a sparse array of dots which never move but change color according to various algorithms. Yet such displays can trigger human vision to construct apparent motion of a subjective surface which is uniformly colored and bounded by a subjective contour. We show that the perceptual strength of this construction depends on the density and regularity of dot placement. We studied three objective measures of density and regularity: nearest-neighbor distance, mean of maximal disks, and variance of maximal disks. We found that nearest-neighbor mechanisms alone are inadequate to account for the perceptual strength of the subjective surfaces and contours. Mechanisms sensitive to areal gaps provide a more adequate account.
Fidopiastis
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Department of Cognitive Sciences, University of California, Irvine 92697, USA.
Hoffman
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Prophet
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Singh
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D003118:Color Perception / Q000502:physiology*; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D009039:Motion Perception / Q000502:physiology*; D013028:Space Perception / Q000502:physiology