Extracting Moving People from Internet Videos

  • Juan Carlos Niebles
  • Bohyung Han
  • Andras Ferencz
  • Li Fei-Fei
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5305)

Abstract

We propose a fully automatic framework to detect and extract arbitrary human motion volumes from real-world videos collected from YouTube. Our system is composed of two stages. A person detector is first applied to provide crude information about the possible locations of humans. Then a constrained clustering algorithm groups the detections and rejects false positives based on the appearance similarity and spatio-temporal coherence. In the second stage, we apply a top-down pictorial structure model to complete the extraction of the humans in arbitrary motion. During this procedure, a density propagation technique based on a mixture of Gaussians is employed to propagate temporal information in a principled way. This method reduces greatly the search space for the measurement in the inference stage. We demonstrate the initial success of this framework both quantitatively and qualitatively by using a number of YouTube videos.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Juan Carlos Niebles
    • 1
    • 2
  • Bohyung Han
    • 3
  • Andras Ferencz
    • 3
  • Li Fei-Fei
    • 1
  1. 1.Princeton UniversityPrincetonUSA
  2. 2.Universidad del NorteColombia
  3. 3.Mobileye Vision TechnologiesPrincetonUSA

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