Site-Based Video System Design and Development (2012) / Chapter Skim
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1This report describes the design and development of the Site Observer, an automated site-based video system for capturing and analyzing vehicle trajectories for the purpose of highway safety research. Many highway safety problems currently are unsupported in terms of high-quality objective data that adequately describe real-world traffic conflicts.
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2The Site Observer's capability is also in contrast to the many commercial video systems currently used for traffic management. One major difference is that the commercial systems are based almost exclusively on background subtraction (also a part of the Site Observer's operation)
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3In addition to accuracy and automation, the third critical requirement for the system has been mentioned -- the need for a flexible and expandable architecture, with relatively unrestricted camera positioning and the ability to add additional cameras for more complex or large sites of interest. Of course, many other practical considerations exist, and these are elaborated in the report.
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4and dedicated cabinets were used together with temperature control for all-weather use. The system was installed at a suburban intersection in Ann Arbor, Michigan, capturing on the order of 17,000 vehicle trajectories over several sessions of daytime traffic monitoring.
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