• Professor in the Department of Electrical, Computer and Software Engineering, McGill University
  • Member of the McGill Center for Intelligent Machines
  • Member of Technical Staff at the Image Processing Laboratory of the Jet Propulsion Laboratory, Pasadena, CA, 1972-1973
  • Visiting Professor in the Department of Computer Science, Hebrew University, Jerusalem, Israel, 1979-1980
  • Member of the Editorial Board of Computer Vision and Image Understanding
    Associate Editor, Computer Vision, Graphics, and Image Processing, 1981-1990
  • General Chairman of the Seventh International Conference on Pattern Recognition, Montreal, August 1984
  • Founding Director of the McGill Center for Intelligent Machines
    (CIM), 1986-1998
  • President of the International Association for Pattern Recognition, 1988-1990.
  • Associate Editor of the IEEE Transactions On Pattern Analysis and Machine Intelligence, 1991-1994
  • Associate Editor, Pattern Recognition, 1992-1995
  • Editor, Plenum Series on Advances in Computer Vision and Machine Intelligence, 1984-1997
  • Founder, AutoVu Technologies, developer of entry and exit control systems for parking lots and a mobile on-street parking control system.
  • Founder and Chief Scientist of VisionSphere Technologies, a developer of face recognition products.
  • Program Committee of the Medical and Multimedia Applications Track, ICPR 2002
  • Member of Technical Board, AutoVu Technologies Inc.
  • Member of the Scientific Board, ART Advanced Research Technologies Inc., 2001-2003