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Sensors 2016, 16(6), 813;

Street Viewer: An Autonomous Vision Based Traffic Tracking System

Dipartimento di Automatica ed Informatica, Politecnico di Torino, Torino 10129, Italy
Author to whom correspondence should be addressed.
Academic Editor: Andrea Zanella
Received: 8 March 2016 / Revised: 10 May 2016 / Accepted: 27 May 2016 / Published: 3 June 2016
(This article belongs to the Special Issue Smart City: Vision and Reality)
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The development of intelligent transportation systems requires the availability of both accurate traffic information in real time and a cost-effective solution. In this paper, we describe Street Viewer, a system capable of analyzing the traffic behavior in different scenarios from images taken with an off-the-shelf optical camera. Street Viewer operates in real time on embedded hardware architectures with limited computational resources. The system features a pipelined architecture that, on one side, allows one to exploit multi-threading intensively and, on the other side, allows one to improve the overall accuracy and robustness of the system, since each layer is aimed at refining for the following layers the information it receives as input. Another relevant feature of our approach is that it is self-adaptive. During an initial setup, the application runs in learning mode to build a model of the flow patterns in the observed area. Once the model is stable, the system switches to the on-line mode where the flow model is used to count vehicles traveling on each lane and to produce a traffic information summary. If changes in the flow model are detected, the system switches back autonomously to the learning mode. The accuracy and the robustness of the system are analyzed in the paper through experimental results obtained on several different scenarios and running the system for long periods of time. View Full-Text
Keywords: road traffic monitoring; vehicle tracking; vehicle counting; motion estimation; autonomous systems; flow network road traffic monitoring; vehicle tracking; vehicle counting; motion estimation; autonomous systems; flow network

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Bottino, A.; Garbo, A.; Loiacono, C.; Quer, S. Street Viewer: An Autonomous Vision Based Traffic Tracking System. Sensors 2016, 16, 813.

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