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Visual head tracking and slaving for visual telepresence

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2 Author(s)
Heuring, J.J. ; Dept. of Eng. Sci., Oxford Univ., UK ; Murray, D.W.

This paper describes a system for visual telepresence that slaves the motion of an electromechanical stereo head/eye platform to that of an operator's head. Features on the operator's head are detected using an external static camera and tracked over time, using three or more features to find pose (orientation and translation) with a novel algorithm which avoids explicit recovery of the features 3D positions. The recovered pose is then transformed into demands for the pan and elevation axes of the head platform. The process of capturing images, tracking features, recovering pose, and generating demands runs at 50 Hz with a latency of 23 ms, with the controller and platform typically taking another 20 ms to satisfy a demand. Experiments show that the dynamic performance of the entire system, including head platform, is sufficient to copy head movements of up to 400° s-1

Published in:

Robotics and Automation, 1996. Proceedings., 1996 IEEE International Conference on  (Volume:4 )

Date of Conference:

22-28 Apr 1996