Online Kernel Slow Feature Analysis for Temporal Video Segmentation and Tracking

Stephan Liwicki, Stefanos P. Zafeiriou, Maja Pantic

    Research output: Contribution to journalArticleAcademicpeer-review

    21 Citations (Scopus)


    Slow feature analysis (SFA) is a dimensionality reduction technique which has been linked to how visual brain cells work. In recent years, the SFA was adopted for computer vision tasks. In this paper, we propose an exact kernel SFA (KSFA) framework for positive definite and indefinite kernels in Krein space. We then formulate an online KSFA which employs a reduced set expansion. Finally, by utilizing a special kind of kernel family, we formulate exact online KSFA for which no reduced set is required. We apply the proposed system to develop a SFA-based change detection algorithm for stream data. This framework is employed for temporal video segmentation and tracking. We test our setup on synthetic and real data streams. When combined with an online learning tracking system, the proposed change detection approach improves upon tracking setups that do not utilize change detection.
    Original languageEnglish
    Pages (from-to)2955-2970
    Number of pages16
    JournalIEEE transactions on image processing
    Issue number10
    Publication statusPublished - Oct 2015


    • HMI-HF: Human Factors
    • EWI-26756
    • Slow feature analysis
    • Tracking
    • IR-99337
    • Temporal segmentation
    • Change Detection
    • METIS-315569
    • online kernel learning


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