Human tracking using 3D surface colour distributions

Timothy J. Roberts, Stephen J. McKenna, Ian W. Ricketts

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    A likelihood formulation for detailed human tracking in real-world scenes is presented. In this formulation, the appearance, modelled using feature distributions defined over regions on the surface of an articulated 3D model, is estimated and propagated as part of the state. The benefit of such a formulation over currently used techniques is that it provides a dense, highly discriminatory object-based cue that applies in real world scenes. Multi-dimensional histograms are used to represent the feature distributions and an on-line clustering algorithm, driven by prior knowledge of clothing structure, is derived that enhances appearance estimation and computational efficiency. An investigation of the likelihood model shows its profile to be smooth and broad while region grouping is shown to improve localisation and discrimination. These properties of the likelihood model ease pose estimation by allowing coarse, hierarchical sampling and local optimisation.
    Original languageEnglish
    Pages (from-to)1332-1342
    Number of pages11
    JournalImage and Vision Computing
    Volume24
    Issue number12
    DOIs
    Publication statusPublished - Dec 2006

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    Keywords

    • Human tracking
    • Articulated models
    • Sequential estimation
    • Human computer interfaces

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