Multi-camera head pose estimation

  • Authors:
  • Rafael Muñoz-Salinas;E. Yeguas-Bolivar;A. Saffiotti;R. Medina-Carnicer

  • Affiliations:
  • University of Córdoba, Department of Computing and Numerical Analysis, 14071, Córdoba, Spain;University of Córdoba, Department of Computing and Numerical Analysis, 14071, Córdoba, Spain;University of Örebro, AASS Mobile Robotics Laboratory, 70182, Örebro, Sweden;University of Córdoba, Department of Computing and Numerical Analysis, 14071, Córdoba, Spain

  • Venue:
  • Machine Vision and Applications
  • Year:
  • 2012

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Abstract

Estimating people’s head pose is an important problem, for which many solutions have been proposed. Most existing solutions are based on the use of a single camera and assume that the head is confined in a relatively small region of space. If we need to estimate unintrusively the head pose of persons in a large environment, however, we need to use several cameras to cover the monitored area. In this work, we propose a novel solution to the multi-camera head pose estimation problem that exploits the additional amount of information that provides multi-camera configurations. Our approach uses the probability estimates produced by multi-class support vector machines to calculate the probability distribution of the head pose. The distributions produced by the cameras are fused, resulting in a more precise estimate than the one provided individually. We report experimental results that confirm that the fused distribution provides higher accuracy than the individual classifiers and a high robustness against errors.