Chair for Computer Aided Medical Procedures & Augmented Reality
Lehrstuhl für Informatikanwendungen in der Medizin & Augmented Reality

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D. Pustka, M. Huber, M. Bauer, G. Klinker
Spatial Relationship Patterns: Elements of Reusable Tracking and Calibration Systems
The Fifth IEEE and ACM International Symposium on Mixed and Augmented Reality, Santa Barbara, CA, USA, Oct. 22 - 25, 2006, pp. 88-97. (bib)

With tracking setups becoming increasingly complex, it gets more difficult to find suitable algorithms for tracking, calibration and sensor fusion. A large number of solutions exists in the literature for various combinations of sensors, however, no development methodology is available for systematic analysis of tracking setups. When modeling a system as a spatial relationship graph (SRG), which describes coordinate systems and known transformations, all algorithms used for tracking and calibration correspond to certain patterns in the graph. This paper introduces a formal model for representing such spatial relationship patterns and presents a small catalog of patterns frequently used in augmented reality systems. We also describe an algorithm to identify patterns in SRGs at run-time for automatic construction of data flows networks for tracking and calibration.
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