Detecting Events in Crowded Scenes using Tracklet Plots

Pau Climent-Pérez, Alexandre Mauduit, Dorothy N. Monekosso, Paolo Remagnino

Abstract

The main contribution of this paper is a compact representation of the ‘short tracks’ or tracklets present in a time window of a given video input, which allows to analyse and detect different crowd events. To proceed, first, tracklets are extracted from a time window using a particle filter multi-target tracker. After noise removal, the tracklets are plotted into a square image by normalising their lengths to the size of the image. Different histograms are then applied to this compact representation. Thus, different events in a crowd are detected via a Bag-of-words modelling. Novel video sequences, can then be analysed to detect whether an abnormal or chaotic situation is present. The whole algorithm is tested with our own dataset, also introduced in the paper.

References

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Paper Citation


in Harvard Style

Climent-Pérez P., Mauduit A., N. Monekosso D. and Remagnino P. (2014). Detecting Events in Crowded Scenes using Tracklet Plots . In Proceedings of the 9th International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2014) ISBN 978-989-758-004-8, pages 174-181. DOI: 10.5220/0004742301740181


in Bibtex Style

@conference{visapp14,
author={Pau Climent-Pérez and Alexandre Mauduit and Dorothy N. Monekosso and Paolo Remagnino},
title={Detecting Events in Crowded Scenes using Tracklet Plots},
booktitle={Proceedings of the 9th International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2014)},
year={2014},
pages={174-181},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004742301740181},
isbn={978-989-758-004-8},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 9th International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2014)
TI - Detecting Events in Crowded Scenes using Tracklet Plots
SN - 978-989-758-004-8
AU - Climent-Pérez P.
AU - Mauduit A.
AU - N. Monekosso D.
AU - Remagnino P.
PY - 2014
SP - 174
EP - 181
DO - 10.5220/0004742301740181