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Proceedings Paper

Automatic video surveillance of outdoor scenes using track before detect
Author(s): Morten Hansen; Helge B. D. Sorensen; Christian M. Birkemark; Bjarne Stage
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Paper Abstract

This paper concerns automatic video surveillance of outdoor scenes using a single camera. The first step in automatic interpretation of the video stream is activity detection based on background subtraction. Usually, this process will generate a large number of false alarms in outdoor scenes due to e.g. movement of thicket and changes in illumination. To reduce the number of false alarms a Track Before Detect (TBD) approach is suggested. In this TBD implementation all objects detected in the background subtraction process are followed over a number of frames. An alarm is given only if a detected object shows a pattern of movement consistent with predefined rules. The method is tested on a number of video sequences and a substantial reduction in the number of false alarms is demonstrated.

Paper Details

Date Published: 20 May 2005
PDF: 8 pages
Proc. SPIE 5778, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense IV, (20 May 2005); doi: 10.1117/12.601989
Show Author Affiliations
Morten Hansen, Technical Univ. of Denmark (Denmark)
Helge B. D. Sorensen, Technical Univ. of Denmark (Denmark)
Christian M. Birkemark, Danish Defense Research Establishment (Denmark)
Bjarne Stage, Danish Defense Research Establishment (Denmark)


Published in SPIE Proceedings Vol. 5778:
Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense IV
Edward M. Carapezza, Editor(s)

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