Showing papers by "J. Farley Norman published in 1992"
TL;DR: Observers viewed displays containing a large number of apertures, with each aperture containing one or more contours whose orientations and velocities could be independently specified.
115 citations
TL;DR: The results of this study demonstrate impressive visual sensitivity to surface curvature, which is inconsistent with many computational models for deriving three-dimensional structure from motion.
Abstract: The detectability of surface curvatures defined by optical motion was evaluated in three experiments. Observers accurately detected very small amounts of curvature in a direction perpendicular to the direction of rotation, but they were less sensitive to curvatures along the direction of rotation. Variations in either the number of points (between 91 and 9) or the number of views (from 15 to 2) had little or no effect on discrimination accuracy. The results of this study demonstrate impressive visual sensitivity to surface curvature. Several characteristics of this sensitivity to curvature are inconsistent with many computational models for deriving three-dimensional structure from motion.
75 citations