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Distributed Query Processing for Mobile Surveillance

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Authors
Greenhill, Stewart
Venkatesh, Svetha
Date
2007
Type
Conference Paper

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Citation
Greenhill, S. and Venkatesh, S. 2007. Distributed Query Processing for Mobile Surveillance, in Wang, J.Z. et al (ed), Proceedings of the 9th ACM SIGMM International Workshop on Multimedia Information Retrieval (MIR 2007), Sep 24-29 2007, pp. 413-422. Augsburg, Germany: Association for Computing Machinery (ACM).
Source Title
Compilation Proceedings of MM'07 & Co-Located Workshops
Source Conference
ACM Mulitmedia 2007
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Department of Computing
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Abstract

Addressing core issues in mobile surveillance, we present an architecture for querying and retrieving distributed, semi-permanent multi-modal data through challenged networks with limited connectivity. The system provides a rich set of queries for spatio-temporal querying in a surveillance context, and uses the network availability to provide best quality of service. It incrementally and adaptively refines the query, using data already retrieved that exists on static platforms and on-demand data that it requests from mobile platforms. We demonstrate the system using a real surveillance system on a mobile 20 bus transport network coupled with static bus depot infrastructure. In addition, we show the robustness of the system in handling different conditions in the underlying infrastructure by running simulations on a real, but historic dataset collected in an offline manner.