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by James L. Crowley, Franois Berard, Jelle Coutaz
IWAGFR '95 - International Workshop on Gesture and Face Recognition
http://www-prima.imag.fr/Prima/Homepages/jlc/FG95.ps.gz
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Abstract:
This paper concerns techniques for visual tracking of pointing devices. The first section introduces the motivation by describing the potential for applying real time computer vision to man machine interaction. The problem of tracking is then addressed as a problem of optimal signal detection. This approach provides a method in which the most probable location of the pointing device is determined by searching for the image position at which the sum of squared differences with a reference template is minimized. The problems of choosing the size of the reference template and the search region are addressed. A method is provided to detect when to initiate tracking as well as to determine when tracking has failed. The problem of updating the reference mask is also discussed. These techniques are illustrated with a visual tracking program called FingerPaint.
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