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Proceedings Paper

Tracking a head-mounted display in a room-sized environment with head-mounted cameras
Author(s): Jih-Fang Wang; Ronald T. Azuma; Gary Bishop; Vernon Chi; John Eyles; Henry Fuchs
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Paper Abstract

This paper presents our efforts to accurately track a Head-Mounted Display (HMD) in a large environment. We review our current benchtop prototype (introduced in {WCF9O]), then describe our plans for building the full-scale system. Both systems use an inside-oui optical tracking scheme, where lateraleffect photodiodes mounted on the user's helmet view flashing infrared beacons placed in the environment. Church's method uses the measured 2D image positions and the known 3D beacon locations to recover the 3D position and orientation of the helmet in real-time. We discuss the implementation and performance of the benchtop prototype. The full-scale system design includes ceiling panels that hold the infrared beacons and a new sensor arrangement of two photodiodes with holographic lenses. In the full-scale system, the user can walk almost anywhere under the grid of ceiling panels, making the working volume nearly as large as the room.

Paper Details

Date Published: 1 October 1990
PDF: 11 pages
Proc. SPIE 1290, Helmet-Mounted Displays II, (1 October 1990); doi: 10.1117/12.20954
Show Author Affiliations
Jih-Fang Wang, Univ. of North Carolina/Chapel Hill (United States)
Ronald T. Azuma, Univ. of North Carolina/Chapel (United States)
Gary Bishop, Univ. of North Carolina/Chapel (United States)
Vernon Chi, Univ. of North Carolina/Chapel Hill (United States)
John Eyles, Univ. of North Carolina/Chapel (United States)
Henry Fuchs, Univ. of North Carolina/Chapel Hill (United States)

Published in SPIE Proceedings Vol. 1290:
Helmet-Mounted Displays II
Ronald J. Lewandowski, Editor(s)

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