A Local Discriminative Model for Background Subtraction

  • Authors:
  • Adrian Ulges;Thomas M. Breuel

  • Affiliations:
  • Department of Computer Science, Technical University of Kaiserslautern,;Department of Computer Science, Technical University of Kaiserslautern, and Image Understanding and Pattern Recognition Group, German Research Center for Artificial Intelligence (DFKI), Kaiserslau ...

  • Venue:
  • Proceedings of the 30th DAGM symposium on Pattern Recognition
  • Year:
  • 2008

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Abstract

Conventional background subtraction techniques that update a background model online have difficulties with correctly segmenting foreground objects if sudden brightness changes occur. Other methods that learn a global scene model offline suffer from projection errors. To overcome these problems, we present a different approach that is localand discriminative, i.e. for each pixel a classifier is trained to decide whether the pixel belongs to the background or foreground. Such a model requires significantly less tuning effort and shows a better robustness, as we will demonstrate in quantitative experiments on self-created and standard benchmarks. Finally, segmentation is improved significantly by integrating the probabilistic evidence provided by the local classifiers with a graph cut segmentation algorithm.