marina@ai.toronto.edu (Marina Haloulos) (12/06/89)
FLASH ANNOUNCEMENT (GB = Gailbraith Building, 35 St. George Street) ------------------------------------------------------------- ARTIFICIAL INTELLIGENCE SEMINAR GB119, at 11:00 a.m., Thursday 7 December 1989 Dr. Richard P. Wildes SUNY, Buffalo "An Analysis of stereo disparity for the recovery of 3D scene geometry" The problems under consideration center around the recovery of three- dimensional scene geometry from binocular stereo disparity. In order to accomplish this goal an analysis of disparity is presented. The analysis makes explicit the geometric relations between a stereo disparity field and a differentially projected scene. These results show how it is possible to recover three-dimensional surface geometry through first-order (i.e., surface orientation as well as distance) in a direct fashion from stereo disparity. As a particular application of the analysis, a method is presented for recovering the discontinuities of surfaces from stereo disparity. The results of applying this method to both natural and synthetic binocular stereo disparity information are also presented.