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Proceedings Paper

Shape-based human detection for threat assessment
Author(s): Dah-Jye Lee; Pengcheng Zhan; Aaron Thomas; Robert B. Schoenberger
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Paper Abstract

Detection of intrusions for early threat assessment requires the capability of distinguishing whether the intrusion is a human, an animal, or other objects. Most low-cost security systems use simple electronic motion detection sensors to monitor motion or the location of objects within the perimeter. Although cost effective, these systems suffer from high rates of false alarm, especially when monitoring open environments. Any moving objects including animals can falsely trigger the security system. Other security systems that utilize video equipment require human interpretation of the scene in order to make real-time threat assessment. Shape-based human detection technique has been developed for accurate early threat assessments for open and remote environment. Potential threats are isolated from the static background scene using differential motion analysis and contours of the intruding objects are extracted for shape analysis. Contour points are simplified by removing redundant points connecting short and straight line segments and preserving only those with shape significance. Contours are represented in tangent space for comparison with shapes stored in database. Power cepstrum technique has been developed to search for the best matched contour in database and to distinguish a human from other objects from different viewing angles and distances.

Paper Details

Date Published: 15 July 2004
PDF: 11 pages
Proc. SPIE 5438, Visual Information Processing XIII, (15 July 2004); doi: 10.1117/12.542981
Show Author Affiliations
Dah-Jye Lee, Brigham Young Univ. (United States)
Pengcheng Zhan, Brigham Young Univ. (United States)
Aaron Thomas, Brigham Young Univ. (United States)
Robert B. Schoenberger, Agris-Schoen Vision Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 5438:
Visual Information Processing XIII
Zia-ur Rahman; Robert A. Schowengerdt; Stephen E. Reichenbach, Editor(s)

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