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An Optical Tracking System for VR/AR-Applications

: Dorfmüller, K.

Gervautz, M.; Hildebrand, A.; Schmalstieg, D. ; European Association for Computer Graphics -EUROGRAPHICS-; Österreichische Akademie der Wissenschaften, Wien; TU Wien:
Virtual Environments '99. Proceedings of the Eurographics Workshop
Wien: Springer, 1999 (Springer Computer Science)
ISBN: 3-211-83347-1
Eurographics Workshop on Virtual Environments <5, 1999, Wien>
Conference Paper
Fraunhofer IGD ()
camera calibration; object pose estimation; optictal tracking; rigid body; virtual reality

In this paper, an optical tracking system is introduced for the use within Virtual and Augmented Reality applications. The system uses retroreflective markers which are attached to a special designed interaction device. The construction of the device allows us to gather six degrees of freedom. In order to achieve high tracking precision we introduce a calibration algorithm which results in sub-pixel accuracy and is therefore well applicable within Augmented Reality scenarios. Further the algorithm for calculating the pose of a rigid body is described. Finally, the optical tracking system is evaluated in regard to its accuracy.