Interactive Media Systems, TU Wien

Fundamentals of Ubiquitous Tracking

By Joseph Newman, Martin Wagner, Thomas Pintaric, Asa MacWilliams, Martin Bauer, Gudrun Klinker, and Dieter Schmalstieg


To enable rich and meaningful Augmented Reality (AR) experiences within a Ubiquitous Computing environment, a detailed, coherent and up-to-date spatial model of the world is essential. However, current tracking technologies are limited in their range and operating environments. This has, so far, restricted the development of wide-area AR applications. To extend the range of AR applications, it will be necessary to combine widely different tracking technologies dynamically, aggregating their data and balancing their trade-offs. In this paper, we propose a formal framework, called Ubiquitous Tracking, which uses a graph-based model of spatial relationships to build dynamically extendible networks of trackers suitable for the high-precision, low-latency requirements of Augmented Reality. The framework is powerful, allowing us to model existing complex tracking setups; extensible, accommodating new trackers, filtering schemes and optimisation criteria; and efficient, allowing an effective implementation within existing AR systems.


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