A Probabilistic Exclusion Principle for Tracking Multiple Objects

  • Authors:
  • John MacCormick;Andrew Blake

  • Affiliations:
  • Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK http://www.robots.ox.ac.uk/~vdg;Microsoft Research Limited, St George House, 1 Guildhall Street, Cambridge CB2 3NH, UK

  • Venue:
  • International Journal of Computer Vision
  • Year:
  • 2000

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Abstract

Tracking multiple targets is a challenging problem, especially when the targets are “identical”, in the sense that the same model is used to describe each target. In this case, simply instantiating several independent 1-body trackers is not an adequate solution, because the independent trackers tend to coalesce onto the best-fitting target. This paper presents an observation density for tracking which solves this problem by exhibiting a probabilistic exclusion principle. Exclusion arises naturally from a systematic derivation of the observation density, without relying on heuristics. Another important contribution of the paper is the presentation of partitioned sampling, a new sampling method for multiple object tracking. Partitioned sampling avoids the high computational load associated with fully coupled trackers, while retaining the desirable properties of coupling.