Video surveillance has a growing importance in public safety services. Departments
and organizations delivering public safety and security services often need to resort to
covertness in their activities. They usually compromise on distance, lens size and light to insure
secrecy; these compromises present challenges on the quality and usefulness of the captured
video. Moreover, outdoor surveillance systems, especially over long distances, are often
constrained to wireless networks to transport the video back to the monitoring offices.
The design of such application is multi-faceted and covers both video processing and the delivery
network. In this paper, we study the challenges of video surveillance, covering most
of the phases of a typical surveillance system, and present a roadmap to render the surveillance video, collected
over long distances, useful in the pursuit of investigations and responsive to the requirements of different
target recognition levels.
Keywords: Outdoor surveillance systems, quality of service, subject recognition, wireless video communications,
video surveillance, typical surveillance system.
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