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Sensors 2015, 15(9), 23341-23360; doi:10.3390/s150923341

CCTV Coverage Index Based on Surveillance Resolution and Its Evaluation Using 3D Spatial Analysis

Lab. for Sensor & Modeling, Department of Geoinformatics, University of Seoul, Seoulsiripdaero 163, Dongdaemun-gu, Seoul 02504, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Gonzalo Pajares Martinsanz
Received: 9 June 2015 / Revised: 9 September 2015 / Accepted: 10 September 2015 / Published: 16 September 2015
(This article belongs to the Section Physical Sensors)
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Abstract

We propose a novel approach to evaluating how effectively a closed circuit television (CCTV) system can monitor a targeted area. With 3D models of the target area and the camera parameters of the CCTV system, the approach produces surveillance coverage index, which is newly defined in this study as a quantitative measure for surveillance performance. This index indicates the proportion of the space being monitored with a sufficient resolution to the entire space of the target area. It is determined by computing surveillance resolution at every position and orientation, which indicates how closely a specific object can be monitored with a CCTV system. We present full mathematical derivation for the resolution, which depends on the location and orientation of the object as well as the geometric model of a camera. With the proposed approach, we quantitatively evaluated the surveillance coverage of a CCTV system in an underground parking area. Our evaluation process provided various quantitative-analysis results, compelling us to examine the design of the CCTV system prior to its installation and understand the surveillance capability of an existing CCTV system. View Full-Text
Keywords: closed circuit television (CCTV); surveillance performance; surveillance coverage; surveillance resolution closed circuit television (CCTV); surveillance performance; surveillance coverage; surveillance resolution
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Choi, K.; Lee, I. CCTV Coverage Index Based on Surveillance Resolution and Its Evaluation Using 3D Spatial Analysis. Sensors 2015, 15, 23341-23360.

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