Perceptual Disambiguation of Projected Ellipses
Abstract
Projected ellipses are difficult or impossible to disambiguate from the family of other ellipses that could produce the same image from a single viewpoint. This study analyzed perceptual cues that may be used to perform this disambiguation. Subjects viewed projected ellipses from a single direction under a variety of perceptual manipulations to determine the contribution of each to the ability to reconstruct the slant and aspect ratio of the viewed ellipse. Projecting the ellipse in correct perspective, with or without a broken path, provided only slight reduction to aspect ratio reconstruction error. Viewed binocularly, a broken path produced the smallest errors for slant reconstruction. Observation of ellipses with the addition of a ball object moving along the path according to any of the selected symmetrical motion profiles resulted in relatively accurate reconstructions of slant and aspect ratio across all viewing angles for both monocular and binocular viewing.
Degree
Ph.D.
Advisors
Connolly, Purdue University.
Subject Area
Psychobiology|Cognitive psychology
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