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Title

Importance of detection for video surveillance applications

AuthorsVarona, Javier; Gonzàlez, Jordi; Rius, Ignasi; Villanueva, Juan J.
KeywordsVideo surveillance
Visual tracking
Target detection
Issue Date2008
PublisherThe International Society for Optics and Photonics
CitationOptical Engineering 47(8): 087201 (2008)
AbstractThough it is the first step of a real video surveillance application, detection has received less attention than tracking in research on video surveillance. We show, however, that the majority of errors in the tracking task are due to wrong detection. We show this by experimenting with a multi object tracking algorithm based on a Bayesian framework and a particle filter. This algorithm, which we have named iTrack, is specifically designed to work in practical applications by defining a statistical model of the object appearance to build a robust likelihood function. Likewise, we present an extension of a background subtraction algorithm to deal with active cameras. This algorithm is used in the detection task to initialize the tracker by means of a prior density. By defining appropriate performance metrics, the overall system is evaluated to elucidate the importance of detection for video surveillance applications.
Publisher version (URL)http://dx.doi.org/10.1117/1.2965548
URIhttp://hdl.handle.net/10261/30488
DOI10.1117/1.2965548
ISSN0091-3286
Appears in Collections:(IRII) Artículos

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