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Omnidirectional Thermal Imaging Surveillance System Featuring Trespasser and Faint Detection

Author(s): Wong Wai Kit, Zeh-Yang Chew, Hong-Liang Lim, Chu-Kiong Loo, Way-Soong Lim

Journal: International Journal of Image Processing
ISSN 1985-2304

Volume: 4;
Issue: 6;
Start page: 518;
Date: 2011;
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Keywords: Monitoring and Surveillance | Thermal Imaging System | Trespasser Detection | Faint Detection | Omnidirectional System | Image Processing and Understanding.

This paper proposed an efficient omnidirectional thermal imaging surveillancesystem featuring trespasser and faint detection. In this thermal imaging system,the omnidirectional scenes in a monitored site such as old folks home, nursinghome, hospital etc. are first captured using a thermal camera attached to acustom made hyperbolic IR (infrared radiation) reflected mirror. The capturedscenes to be monitored with trespasser or faint detection are then fed into alaptop computer for image processing and alarm purposes. Log-polar mapping isproposed to map the captured omnidirectional thermal image into panoramicimage, hence providing the observer or image processing tools a complete wideangle of view. Two effective human behavioral detection algorithms namely:Human head detection algorithm and home alone faint detection algorithm arealso designed for monitored the trespasser or fainted people detection. Theobserved significances of this new proposed omnidirectional thermal imagingsystem include: it can cover a wide angle of view (360ยบ omnidirectional), usingminimum hardware, low cost and the output thermal images are with higher datacompression. Experimental results show that the proposed thermal imaging surveillance system achieves high accuracy in detecting trespasser andmonitoring faint detection for health care purpose.
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