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Proceedings Paper

Application of speed-enhanced spatial domain correlation filters for real-time security monitoring
Author(s): Akber Gardezi; Nagachetan Bangalore; Ahmed Al-Kandri; Philip Birch; Rupert Young; Chris Chatwin
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Paper Abstract

A speed enhanced space variant correlation filer which has been designed to be invariant to change in orientation and scale of the target object but also to be spatially variant, i.e. the filter function becoming dependant on local clutter conditions within the image. The speed enhancement of the filter is due to the use of optimization techniques employing low-pass filtering to restrict kernel movement to be within regions of interest. The detection and subsequent identification capability of the two-stage process has been evaluated in highly cluttered backgrounds using both visible and thermal imagery acquired from civil and defense domains along with associated training data sets for target detection and classification. In this paper a series of tests have been conducted in multiple scenarios relating to situations that pose a security threat. Performance matrices comprised of peak-to-correlation energy (PCE) and peak-to-side lobe ratio (PSR) measurements of the correlation output have been calculated to allow the definition of a recognition criterion. The hardware implementation of the system has been discussed in terms of Field Programmable Gate Array (FPGA) chipsets with implementation bottle necks and their solution being considered.

Paper Details

Date Published: 13 October 2011
PDF: 11 pages
Proc. SPIE 8189, Optics and Photonics for Counterterrorism and Crime Fighting VII; Optical Materials in Defence Systems Technology VIII; and Quantum-Physics-based Information Security, 81890R (13 October 2011); doi: 10.1117/12.898915
Show Author Affiliations
Akber Gardezi, Univ. of Sussex (United Kingdom)
Nagachetan Bangalore, Univ. of Sussex (United Kingdom)
Ahmed Al-Kandri, Univ. of Sussex (United Kingdom)
Philip Birch, Univ. of Sussex (United Kingdom)
Rupert Young, Univ. of Sussex (United Kingdom)
Chris Chatwin, Univ. of Sussex (United Kingdom)


Published in SPIE Proceedings Vol. 8189:
Optics and Photonics for Counterterrorism and Crime Fighting VII; Optical Materials in Defence Systems Technology VIII; and Quantum-Physics-based Information Security
Roberto Zamboni; François Kajzar; Attila A. Szep; Mark T. Gruneisen; Miloslav Dusek; John G. Rarity; Colin Lewis; Douglas Burgess, Editor(s)

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