Abstract
Three experiments were conducted to examine the accuracy of 3-D shape recovery from deforming-contour displays. The displays simulated silhouettes of ellipsoids rotating about a vertical axis. Subjects judged the horizontal cross-section of the ellipsoids. The shape of the ellipsoid, the position of the axis of rotation, and the type of projection were manipulated in Experiment 1. The results indicated relatively accurate shape recovery when the major axis of the ellipsoid was-small. In Experiment 2, the shape of the ellipsoid and the velocity and curvature of the contour were manipulated. When the rate of deformation of curvature was decreased, more eccentric shapes were reported. In Experiment 3, the shape of the object and the amount of simulated rotation were manipulated. Subjects made both shape and extent of rotation judgments. The results showed that eccentricity of shape responses could be accurately predicted from rotation responses, suggesting that the recovery of 3-D shape from smooth, deforming contours is dependent on the perceived extent of rotation
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This research was supported by a National Science Foundation Graduale Fellowship awarded to James M. Cortese and National Science Foundation Grant BNS 8908512.
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Cortese, J.M., Andersen, G.J. Recovery of 3-D shape from deforming contours. Perception & Psychophysics 49, 315–327 (1991). https://doi.org/10.3758/BF03205987
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DOI: https://doi.org/10.3758/BF03205987