Saul, Hagen and Kozempel, Karsten and Haberjahn, Mathias (2014) A Comparison of Methods for Detecting atypical Trajectories. In: Urban Transport XX, 138, pp. 393-403. WITPress. 20th International Conference on Urban Transport and the Environment, 2014-05-28 - 2014-05-30, Portugal. doi: 10.2495/UT140331. ISBN 978-1-84564-778-0. ISSN 1746-4498.
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Abstract
The detection of atypical trajectories and events in road traffic is a challenging task for the implementation of an intelligent transportation system. It also provides information for optimizing the traffic flow and mitigating risks of accidents without the need to observe individual traffic participants. For detecting such events two methods representing the state of the art are compared: A map-based trajectory analyzer and a neural network, the Self Organizing Map—both applicable with unsupervised learning. The two compared algorithms detect atypical trajectories by modeling the probability function of trajectory features representing the object state at every trajectory point containing location, speed and acceleration values. The map-based approach was extended and improved by pre-clustering the trajectories with regard to their relation (e.g. vehicle turning left/going straight ahead). The Self Organizing Map algorithm uses vector quantization and prototyping of feature vectors and, thus, does not need any preliminary work. Both methods are evaluated by experiments using the same data which allows strengths and weaknesses to be revealed. The data base for evaluation consists of trajectories from traffic surveillance cameras at an intersection and simulated trajectories.
Item URL in elib: | https://elib.dlr.de/89352/ | ||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||
Title: | A Comparison of Methods for Detecting atypical Trajectories | ||||||||||||||||
Authors: |
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Date: | 28 May 2014 | ||||||||||||||||
Journal or Publication Title: | Urban Transport XX | ||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||
Open Access: | Yes | ||||||||||||||||
Gold Open Access: | No | ||||||||||||||||
In SCOPUS: | No | ||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||
Volume: | 138 | ||||||||||||||||
DOI: | 10.2495/UT140331 | ||||||||||||||||
Page Range: | pp. 393-403 | ||||||||||||||||
Editors: |
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Publisher: | WITPress | ||||||||||||||||
Series Name: | WIT Transactions on the Built Environment | ||||||||||||||||
ISSN: | 1746-4498 | ||||||||||||||||
ISBN: | 978-1-84564-778-0 | ||||||||||||||||
Status: | Published | ||||||||||||||||
Keywords: | atypical, trajectory, behavior, probability density maps, self organizing map, threshold, pre-clustering, surveillance, automatic, unsupervised | ||||||||||||||||
Event Title: | 20th International Conference on Urban Transport and the Environment | ||||||||||||||||
Event Location: | Portugal | ||||||||||||||||
Event Type: | international Conference | ||||||||||||||||
Event Start Date: | 28 May 2014 | ||||||||||||||||
Event End Date: | 30 May 2014 | ||||||||||||||||
Organizer: | Wessex Institute of Technology | ||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||
HGF - Program: | Transport | ||||||||||||||||
HGF - Program Themes: | Traffic Management (old) | ||||||||||||||||
DLR - Research area: | Transport | ||||||||||||||||
DLR - Program: | V VM - Verkehrsmanagement | ||||||||||||||||
DLR - Research theme (Project): | V - Projekt Verkehrs- und Mobilitätsmanagement (old) | ||||||||||||||||
Location: | Berlin-Adlershof | ||||||||||||||||
Institutes and Institutions: | Institute of Transportation Systems > Verkehrsdatenerfassung | ||||||||||||||||
Deposited By: | Saul, Hagen | ||||||||||||||||
Deposited On: | 10 Jun 2014 14:59 | ||||||||||||||||
Last Modified: | 24 Apr 2024 19:55 |
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