Fine-Grained Activity Recognition by Aggregating Abstract Object Usage

  • Authors:
  • Donald J. Patterson;Dieter Fox;Henry Kautz;Matthai Philipose

  • Affiliations:
  • University of Washington Department of Computer Science and Engineering Seattle, Washington, USA;University of Washington Department of Computer Science and Engineering Seattle, Washington, USA;University of Washington Department of Computer Science and Engineering Seattle, Washington, USA;Intel Research Seattle, Seattle, Washington, USA

  • Venue:
  • ISWC '05 Proceedings of the Ninth IEEE International Symposium on Wearable Computers
  • Year:
  • 2005

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Abstract

In this paper we present results related to achieving finegrained activity recognition for context-aware computing applications. We examine the advantages and challenges of reasoning with globally unique object instances detected by an RFID glove. We present a sequence of increasingly powerful probabilistic graphical models for activity recognition. We show the advantages of adding additional complexity and conclude with a model that can reason tractably about aggregated object instances and gracefully generalizes from object instances to their classes by using abstraction smoothing. We apply these models to data collected from a morning household routine.