Geometrically correct imagery for teleconferencing

Current camera-monitor teleconferencing applications produce unrealistic imagery and break any sense of presence for the participants. Other capture/display technologies can be used to provide more compelling teleconferencing. However, complex geometries in capture/display systems make producing geometrically correct imagery difficult. It is usually impractical to detect, model and compensate for all effects introduced by the capture/display system. Most applications simply ignore these issues and rely on the user acceptance of the camera-monitor paradigm. This paper presents a new and simple technique for producing geometrically correct imagery for teleconferencing environments. The necessary image transformations are derived by finding a mapping between a capture and display device for a fixed viewer location. The capture/display relationship is computed directly in device coordinates and completely avoids the need for any intermediate, complex representations of screen geometry,...

• Type: Conference
• Year: 1999
• Where: MM
• Authors: Ruigang Yang, Michael S. Brown, W. Brent Seales, Henry Fuchs
• Keywords: Camera-monitor Teleconferencing Applications, Correct Imagery, MM 1999, Multimedia, Teleconferencing