An Appearance-Based Particle Filter for Visual Tracking in Smart Rooms

  • Authors:
  • Oswald Lanz;Paul Chippendale;Roberto Brunelli

  • Affiliations:
  • Bruno Kessler Foundation - irst, Povo di Trento, Italy 38050;Bruno Kessler Foundation - irst, Povo di Trento, Italy 38050;Bruno Kessler Foundation - irst, Povo di Trento, Italy 38050

  • Venue:
  • Multimodal Technologies for Perception of Humans
  • Year:
  • 2008

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Abstract

This paper presents a visual particle filter for tracking a variable number of humans interacting in indoor environments, using multiple cameras. It is built upon a 3-dimensional, descriptive appearance model which features (i) a 3D shape model assembled from simple body part elements and (ii) a fast while still reliable rendering procedure developed on a key view basis of previously acquired body part color histograms. A likelihood function is derived which, embedded in an occlusion-robust multibody tracker, allows for robust and ID persistent 3D tracking in cluttered environments. We describe both model rendering and target detection procedures in detail, and report a quantitative evaluation of the approach on the `CLEAR'07 3D Person Tracking' corpus.