Online visual tracking with histograms and articulating blocks

  • Authors:
  • S.M. Shahed Nejhum;Jeffrey Ho;Ming-Hsuan Yang

  • Affiliations:
  • Computer and Information Science and Engineering, University of Florida, Gainesville, FL 32611, United States;Computer and Information Science and Engineering, University of Florida, Gainesville, FL 32611, United States;Electrical Engineering and Computer Science, University of California, Merced, CA 95344, United States

  • Venue:
  • Computer Vision and Image Understanding
  • Year:
  • 2010

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Abstract

We propose an algorithm for accurate tracking of articulated objects using online update of appearance and shape. The challenge here is to model foreground appearance with histograms in a way that is both efficient and accurate. In this algorithm, the constantly changing foreground shape is modeled as a small number of rectangular blocks, whose positions within the tracking window are adaptively determined. Under the general assumption of stationary foreground appearance, we show that robust object tracking is possible by adaptively adjusting the locations of these blocks. Implemented in MATLAB without substantial optimization, our tracker runs already at 3.7 frames per second on a 3GHz machine. Experimental results have demonstrated that the algorithm is able to efficiently track articulated objects undergoing large variation in appearance and shape.