Background Subtraction

Processing a video stream to segment foreground objects from the background is a critical first step in many computer vision applications. Background subtraction (BGS) is a commonly used technique for achieving this segmentation. The popularity of BGS largely comes from its computational efficiency, which allows applications such as human-computer interaction, video surveillance, and traffic monitoring to meet their real-time goals.

Numerous BGS algorithms and a number of post-processing techniques that aim to improve the results of these algorithms have been proposed. In this project, I evaluated several popular, state-of-the-art BGS algorithms and examine how post-processing techniques affect their performance. The experimental results demonstrate that post-processing techniques can significantly improve the foreground segmentation masks produced by a BGS algorithm.

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Information related to this project:

  • Parks, D. H. and Fels, S. (accepted for oral presentation, Sept. 2008). Evaluation of Background Subtraction Algorithms with Post-processing. IEEE International Conference on Advanced Video and Signal-based Surveillance.
  • Proposal
  • Presentation
  • Background Subtraction Library: library containing 7 popular background subtraction algorithms (adaptive median filtering, eigenbackground, single Gaussian, Gaussian mixture models, adaptive Gaussian mixture models, running mean, mediod filtering).
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