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Development of GIS-based advanced traveler information system (ATIS) in Hong Kong /Wong, Sau-ching, Pauline. January 2002 (has links)
Thesis (M. Sc.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 131-133).
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Towards a non-intrusive traffic surveillance system using digital image processingLorio, Berino 12 1900 (has links)
Thesis (MScEng)--Stellenbosch University, 2001. / ENGLISH ABSTRACT: With the increased focus on the use of innovative and state-of-the-art technology in
Intelligent Transport Systems (ITS), the need for more accurate and more detailed road
traffic flow data has become apparent. Data obtained from vehicle detector loops, which
merely act as vehicle presence sensors, is neither reliable nor accurate enough anymore.
This type of sensor poses the problem that it has to be inserted into the road surface;
temporarily obstructing traffic flows, and has to be replaced after pavement
reconstruction. One of the solutions to this problem is to develop a traffic surveillance
system that uses video image processing.
In cities where Intelligent Transport Systems are used extensively, roadways are
monitored through Closed Circuit Television Cameras (CCTV) that are closely watched
by traffic control centre personnel. These cameras are mounted on posts on the roadside.
These cameras can serve a dual purpose, being used for both human monitoring and as
inputs to Video Image Processing Systems.
In this study some of the digital image processing techniques that could be used in a
traffic surveillance system were investigated. This report leads the reader through the
various steps in the processing of a scene by a traffic surveillance system based on
feature tracking, and discusses the pitfalls and problems that are experienced.
The tracker was tested using three image sequences and the results are presented in the
final chapter of this report. / AFRIKAANSE OPSOMMING: Met die toenemende fokus op die gebruik van innoverende oplossings en gevorderde
tegnologie in Intelligente Vervoerstelsels, het die noodsaaklikheid van akkurater en meer
gedetailleerde padverkeer vloeidata duidelik geword. Data wat verkry word d.m.v.
voertuig deteksie lusse, wat alleenlik voertuig teenwoordigheid/afwesigheid meet, is nie
meer akkuraat of betroubaar genoeg nie. Hierdie tipe sensors het egter die nadeel dat dit
in die plaveisel ingesny moet word, dus vloei tydelik kan belemmer, en moet vervang
word elke keer as plaveisel rekonstruksie gedoen word. Een van die oplossings vir hierdie
probleem is om 'n verkeers waarnemingstelsel te ontwikkel wat van videobeeldverwerking
gebruik maak.
In stede waar van uitgebreide intelligente verkeerstelsels gebruik gemaak word, word
paaie gemonitor d.m.v. geslote baan televisiekameras wat op pale langs die paaie
aangebring is. Personeellede van die verkeers beheer sentrum hou dan die inkomende
televisiebeelde dop. Hierdie kameras kan 'n dubelle rol vervul deurdat dit vir beide
menslike waarneming en as invoer in 'n video-beeldverwerking stelsel gebruik kan word.
In hierdie studie was verskeie digitale beeldverwerking tegnieke wat gebruik kan word in
'n verkeers waarnemingstelsel ondersoek. Hierdie verslag lei die leser deur die verskeie
stappe in die verwerking van 'n toneel deur 'n verkeers waarneming stelsel wat gebaseer
is op die volg van kenmerke. Die verslag beskryf ook die slaggate en probleme wat
ondervind word.
Die voertuig volger was getoets deur van drie reekse beelde gebruik te maak en die
resultate word weergegee in die finale hoodfstuk van hierdie verslag.
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Trajectories As a Unifying Cross Domain Feature for Surveillance SystemsWan, Yiwen 12 1900 (has links)
Manual video analysis is apparently a tedious task. An efficient solution is of highly importance to automate the process and to assist operators. A major goal of video analysis is understanding and recognizing human activities captured by surveillance cameras, a very challenging problem; the activities can be either individual or interactional among multiple objects. It involves extraction of relevant spatial and temporal information from visual images. Most video analytics systems are constrained by specific environmental situations. Different domains may require different specific knowledge to express characteristics of interesting events. Spatial-temporal trajectories have been utilized to capture motion characteristics of activities. The focus of this dissertation is on how trajectories are utilized in assist in developing video analytic system in the context of surveillance. The research as reported in this dissertation begins real-time highway traffic monitoring and dynamic traffic pattern analysis and in the end generalize the knowledge to event and activity analysis in a broader context. The main contributions are: the use of the graph-theoretic dominant set approach to the classification of traffic trajectories; the ability to first partition the trajectory clusters using entry and exit point awareness to significantly improve the clustering effectiveness and to reduce the computational time and complexity in the on-line processing of new trajectories; A novel tracking method that uses the extended 3-D Hungarian algorithm with a Kalman filter to preserve the smoothness of motion; a novel camera calibration method to determine the second vanishing point with no operator assistance; and a logic reasoning framework together with a new set of context free LLEs which could be utilized across different domains. Additional efforts have been made for three comprehensive surveillance systems together with main contributions mentioned above.
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An investigation of realtime data in intelligent transportation systemsLaw, Lap-tak, Brendan., 羅立德. January 2002 (has links)
published_or_final_version / Transport Policy and Planning / Master / Master of Arts in Transport Policy and Planning
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An approach to reducing bus bunchingPilachowski, Josh. January 1900 (has links) (PDF)
Thesis (Ph.D.)--University of California, Berkeley, 2009. / Text document (PDF). Title from PDF title page (viewed on April 2, 2010). "Fall 2009." Includes bibliographical references (p. 41-42).
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Effectiveness of the Statewide Deployment and Integration of Advanced Traveler Information SystemsBelz, Nathan P. January 2008 (has links) (PDF)
No description available.
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Age differences in comprehension of affirmative and negative information in verbal and symbolic traffic signsMorey, Sharon Lee 01 January 1987 (has links)
No description available.
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Development of GIS-based advanced traveler information system (ATIS) in Hong Kong黃秀貞, Wong, Sau-ching, Pauline. January 2002 (has links)
published_or_final_version / Urban Planning / Master / Master of Science in Urban Planning
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Framework for Integration of the Driving Simulator in Connected Vehicle EnvironmentUnknown Date (has links)
Research on connected vehicles (CV) has attracted attention in the last decade due
to numerous potential applications and challenges related to exchange of information
between the vehicles (and infrastructure). Most of the relevant studies focus on these
applications and challenges with the help of novel or existing simulation frameworks. The
simulation framework often contains the mobility and communication components, and
these components are frequently simplified. In this study, the authors aim to provide the
detailed information for developing a fully V2X capable infrastructure within the lab
environment. The physical components of the proposed infrastructure include: (i) userdriven
Driving Simulator (DS) with the embedded micro-simulation tool (MS); (ii) external
traffic signal controller (TSC); (iii) Road Side Unit (RSU) and omnidirectional antenna
attached to RSU; (iv) On-Board Unit (OBU) that is integrated within DS‘s cockpit. The
proposed framework can be used for advanced applications in the context of connected
vehicles. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2017. / FAU Electronic Theses and Dissertations Collection
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Ein Fahrerinformationssystem zum Betrieb von Lkw-Konvois /Friedrichs, Andreas. January 1900 (has links)
Originally presented as the author's Thesis--Technische Hochschule Aachen, 2008. / Includes bibliographical references.
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