Stereo tracking error analysis by comparison with an electromagnetic tracking device

Authors:
Matjaž Divjak;Damjan Zazula
Affiliations:
System Software Laboratory, Faculty of Electrical Engineering and Computer Science, University of Maribor, Maribor, Slovenia;System Software Laboratory, Faculty of Electrical Engineering and Computer Science, University of Maribor, Maribor, Slovenia
Venue:
SCIA'05 Proceedings of the 14th Scandinavian conference on Image Analysis
Year:
2005

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Abstract

To analyze the performance of a vision-based tracking algorithm a good reference information is needed. Magnetic trackers are often used for this purpose, but the inevitable transformation of coordinate systems can result in notable alignment errors. This paper presents an approach for estimating the accuracy of various transformation models as well as individual model parameters. Performance is evaluated numerically and then tested on real data. Results show that the method can be successfully used to analyze the tracking error of free-moving objects.