Summary of full paper, presented at
San Francisco, October 20-21, 1999
The full article is published in the printed "Proceedings of the 2nd IWAR'99"
and copyright protected by IEEE Computer Society.
Building a Hybrid Tracking System:
Integration of Optical and Magnetic Tracking
Graz University of Technology
Multi-user augmented reality systems
require excellent registration in order to allow cooperation among
the users. In order to satisfy this need we have built a hybrid
tracking system integrating magnetic and optical tracking. Prediction
from the magnetic tracker allows for rather small search areas in the
optical tracking subsystem. Our hybrid tracking system is faster than a
standalone optical tracking system and outperforms a magnetic system
in terms of accuracy and jitter.
Links and Content
The full paper (as found in the proceedings) describes in detail the
tracking system used in the Studierstube
augmented reality system. A brief description of the Studierstube can
be found on the project web
pages, and the tracking system is described here. Please refer to the full paper for an in-depth description. In addition, we provide color versions of the images in the proceedings.
The Studierstube is a joint project with the Institute of Computer
Graphics at the Vienna University of
Technology. The homepage of our Viennese partners can
be found here.
This image depicts the optical tracking
system. Black triangles denote the prediction of the magnetic tracker,
and red line sindicate tracked corners. Selected features
(for pose computation) are marked by green circles and
finally the reprojected features are denote by blue
The augmented reality helmet is depicted here. It integrates the
magnetic sensor (on top of the helmet), two CCD
cameras and the display.
Calibration of the helmet in the Studierstube.
Copyright (c) 1999 IEEE. Reprinted, with permission, from IWAR'99 proceedings.
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