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Sensors 2012, 12(2), 1509-1528; doi:10.3390/s120201509

Video Sensor Architecture for Surveillance Applications

*  and
Instituto de Automática e Informática Industrial (ai2), Universidad Politecnica de Valencia, C/. de Vera, s/n, E-46022 Valencia, Spain
* Author to whom correspondence should be addressed.
Received: 13 December 2011 / Revised: 20 January 2012 / Accepted: 21 January 2012 / Published: 3 February 2012
(This article belongs to the Section Physical Sensors)
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This paper introduces a flexible hardware and software architecture for a smart video sensor. This sensor has been applied in a video surveillance application where some of these video sensors are deployed, constituting the sensory nodes of a distributed surveillance system. In this system, a video sensor node processes images locally in order to extract objects of interest, and classify them. The sensor node reports the processing results to other nodes in the cloud (a user or higher level software) in the form of an XML description. The hardware architecture of each sensor node has been developed using two DSP processors and an FPGA that controls, in a flexible way, the interconnection among processors and the image data flow. The developed node software is based on pluggable components and runs on a provided execution run-time. Some basic and application-specific software components have been developed, in particular: acquisition, segmentation, labeling, tracking, classification and feature extraction. Preliminary results demonstrate that the system can achieve up to 7.5 frames per second in the worst case, and the true positive rates in the classification of objects are better than 80%.
Keywords: image processing; computer vision; real-time systems; domain-specific architectures; distributed smart cameras; surveillance systems image processing; computer vision; real-time systems; domain-specific architectures; distributed smart cameras; surveillance systems
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Sánchez, J.; Benet, G.; Simó, J.E. Video Sensor Architecture for Surveillance Applications. Sensors 2012, 12, 1509-1528.

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