Translator Disclaimer
8 October 2007 Threat image projection in CCTV
Author Affiliations +
Operators are key components in a Closed Circuit Television (CCTV) system, being the link between the system technology and its effective use. Operators' performance will largely determine the level of service provided by the system. There have been few studies testing operator performance, while much work has been done to test the performance of the technology. Previous work on CCTV operator performance carried out by the Home Office Scientific Development Branch (HOSDB) has used filmed video and subjects who knew they were undergoing testing, meaning subjects are likely to be concentrating harder on performing well. HOSDB believes that there is a need for a test that would be able to be routinely used in a CCTV control room throughout the course of a normal shift to provide management with operational performance data. Threat Image Projection (TIP) is routinely used in X-Ray baggage scanners to keep operators alert to possible threats. At random intervals, a threat target image is superimposed over the image of the baggage being screened. The operator then responds to this threat. A similar system could be used for CCTV operators. A threat image would be randomly superimposed over the live CCTV feed and the operator would be expected to respond to this.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David Neil, Nicola Thomas, and Bob Baker "Threat image projection in CCTV", Proc. SPIE 6741, Optics and Photonics for Counterterrorism and Crime Fighting III, 674102 (8 October 2007);


The Technology Behind X-Ray Security Systems
Proceedings of SPIE (July 26 1976)
Automatic Digital Analysis Of Video Images
Proceedings of SPIE (February 28 1974)
Medical Image Intensifier In 1980 (What Really Happened)
Proceedings of SPIE (August 17 1980)

Back to Top