James L. Crowley and
Jöelle Coutaz
A postscript
version
is available (527 K-bytes).
Vision of the face is an important aspect of human-to-human
communication. We have been experimenting with the use of computer
vision to "watch the face". In this second part of this paper we
describe techniques for detecting, tracking and recognizing images of
faces. When combined with real time image processing and active
control of camera parameters, these techniques can greatly reduce the
communications bandwidth required for video-phone and video-conference
communications.
Abstract:
Computer vision provides a powerful tool for the interaction between
man and machine. The barrier between physical objects (paper,
pencils, calculators) and their electronic counterparts limits both
the integration of computing into human tasks, and the population
willing to adapt to the required input devices. Computer vision,
coupled with video projection using low cost devices, makes it
possible for a human to use any convenient object, including fingers,
as digital input devices. In such an "augmented reality" information
is projected onto ordinary objects and acquired by watching the way
objects are manipulated. A simple example of augmented reality is
provided by the "digital desk" In the first part of this paper we
describe experiments with techniques for wathing the hands of a human.
Patrick Reignier
Fri Jul 21 18:22:45 MET DST 1995