Re-identification of visual targets in camera networks: a comparison of techniques

  • Authors:
  • Dario Figueira;Alexandre Bernardino

  • Affiliations:
  • Institute for Systems and Robotics, Instituto Superior Técnico, Lisboa, Portugal;Institute for Systems and Robotics, Instituto Superior Técnico, Lisboa, Portugal

  • Venue:
  • ICIAR'11 Proceedings of the 8th international conference on Image analysis and recognition - Volume Part I
  • Year:
  • 2011

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Abstract

In this paper we address the problem of re-identification of people: given a camera network with non-overlapping fields of view, we study the problem of how to correctly pair detections in different cameras (one to many problem, search for similar cases) ormatch detections to a database of individuals (one to one, search for best match case). We propose a novel color histogram based features which increases the re-identification rate. Furthermore we evaluate five different classifiers: three fixed distance metrics, one learned distance metric and a classifier based on sparse representation, novel to the field of re-identification. A new database alongside with the matlab code produced are made available on request.