Simultaneous sparsity model for multi-perspective video anomaly detection

Xuan Mo, Vishal Monga, Raja Bala

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Scopus citations

    Abstract

    Recently, sparsity based classification has been applied to video anomaly detection. A linear model is assumed over video features (e.g. trajectories) such that the feature representation of a new event is written as a sparse linear combination of existing feature representations in the dictionary. Sparsity based video anomaly detection has shown promise over alternate video anomaly detection methods in that the sparse representations exhibit excellent robustness under noise (common in surveillance videos) and missing or corrupted features, e.g. vehicle occlusion in transportation videos. One limitation of existing sparsity based video anomaly detection techniques is that they are based on only a single feature representation (known formally as video event encoding). One can easily envision that different event representations such as object trajectories and spatio-temporal volumes often contain correlated yet complementary information. In this paper, we propose to extend sparsity models based on single feature representations to simultaneous sparse representations of multiple feature representations. In this model, the matrix of sparse coefficients does not confirm to the commonly seen row-sparsity and a modified greedy heuristic approach that extends simultaneous orthogonal matching pursuit (SOMP) is needed to solve the resulting optimization problem. Experiments on two benchmark video datasets reveal that our method significantly outperforms state-of-The art approaches that utilize only a single-perspective or event encoding.

    Original languageEnglish (US)
    Title of host publication2014 IEEE International Conference on Image Processing, ICIP 2014
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages2314-2318
    Number of pages5
    ISBN (Electronic)9781479957514
    DOIs
    StatePublished - Jan 28 2014

    Publication series

    Name2014 IEEE International Conference on Image Processing, ICIP 2014

    All Science Journal Classification (ASJC) codes

    • Computer Vision and Pattern Recognition

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  • Cite this

    Mo, X., Monga, V., & Bala, R. (2014). Simultaneous sparsity model for multi-perspective video anomaly detection. In 2014 IEEE International Conference on Image Processing, ICIP 2014 (pp. 2314-2318). [7025469] (2014 IEEE International Conference on Image Processing, ICIP 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICIP.2014.7025469