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Role Played by Extremal Edges in Figure-ground Organization
English
144 b
Delivery to Austria
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Paperback
10.27
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Identifying and understanding the visual cues that determinerelative depth across image contours (i.e., figure-groundorganization) are central problems of vision science. In thismonograph we report the figural cue of extremal edges (EEs), whicharise when an opaque convex surface smoothly curves to occlude partof itself. We also compare classical cues to figure-groundorganization with the recently discovered cue of EE. Our resultsshow that EEs are surprisingly powerful pictorial cues to relativedepth across a contour, almost entirely dominating the well-knownfigure-ground cues of relative size, convexity, surroundedness, andshape familiarity. These results demonstrate that natural shadingand texture gradients in an image provide important additionalinformation about figure-ground organization that has beenoverlooked in the past 75 years in research on figure-groundorganization.
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English
