[ont.events] Dr. Richard P. Wildes, Thursday 7 December 1989: ARTIFICIAL INTELLIGEN

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.