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Title:Leveraging Traffic and Surveillance Video Cameras for Urban Traffic
Author(s):Eriksson, Jakob
Subject(s):bicycles
optical flow tracking
pedestrians
traffic cameras
traffic statistics
urban traffic
video surveillance
Geographic Coverage:Chicago, Illinois
Abstract:The objective of this project was to investigate the use of existing video resources, such as traffic cameras, police cameras, red light cameras, and security cameras for the long-term, real-time collection of traffic statistics. An additional objective was to gather similar statistics for pedestrians and bicyclists. Throughout the course of the project, we investigated several methods for tracking vehicles under challenging conditions. The initial plan called for tracking based on optical flow. However, it was found that current optical flow–estimating algorithms are not well suited to low-quality video—hence, developing optical flow methods for low-quality video has been one aspect of this project. The method eventually used combines basic optical flow tracking with a learning detector for each tracked object—that is, the object is tracked both by its apparent movement and by its appearance should it temporarily disappear from or be obscured in the frame. We have produced a prototype software that allows the user to specify the vehicle trajectories of interest by drawing their shapes superimposed on a video frame. The software then tracks each vehicle as it travels through the frame, matches the vehicle’s movements to the most closely matching trajectory, and increases the vehicle count for that trajectory. In terms of pedestrian and bicycle counting, the system is capable of tracking these “objects” as well, though at present it is not capable of distinguishing between the three classes automatically. Continuing research by the principal investigator under a different grant will establish this capability as well.
Issue Date:2014-12
Publisher:Illinois Center for Transportation/Illinois Department of Transportation
Citation Info:Eriksson, Jakob. 2014. Leveraging Traffic and Surveillance Video Cameras for Urban Traffic, A report of the findings of ICT-R27-131. Illinois Center for Transportation Series No. 14-024. Research Report No. FHWA-ICT-14-022. Illinois Center for Transportation, Rantoul, IL.
Series/Report:Illinois Center for Transportation Series No. 14-024
Genre:Technical Report
Type:Text
Language:English
URI:http://hdl.handle.net/2142/60509
ISSN:0197-9191
Sponsor:Illinois Department of Transportation, R27-131
Rights Information:No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161
Date Available in IDEALS:2014-12-09


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