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    Wyświetlanie 1-4 z 4
    Tytuł:
    Detection of vehicles moving in wrong direction
    Autorzy:
    Bazan, M.
    Ciskowski, P.
    Halawa, K.
    Janiczek, T.
    Rusiecki, A.
    Śmigowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/393421.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    optical flow
    wrong direction driving incidents detection
    Lucas-Kanade method
    przepływ optyczny
    wykrywanie jazdy pod prąd
    metoda Lucasa-Kanade
    Opis:
    In this paper we describe a method for detecting situations where a vehicle moves along a highway in the wrong direction. The first step of the algorithm is to build a pattern using Gaussian mixture model based on the optical flow calculated with the Lucas-Kanade method. The second stage concerns the detection of objects as a potential road hazard. The optical flow calculated on-line during the second stage is compared with the traffic pattern used in the first stage. Then the difference in movement direction is detected using predefined thresholds.
    Źródło:
    Archives of Transport System Telematics; 2016, 9, 1; 3-9
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multithreaded enhancements of the Dijkstra algorithm for route optimization in urban networks
    Autorzy:
    Bazan, M.
    Ciskowski, P.
    Dudek, R.
    Halawa, K.
    Janiczek, T.
    Kozaczewski, P.
    Rusiecki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/393379.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    Dijkstra algorithm
    shortest paths
    fastest routes
    urban networks
    route optimization
    algorytm Dijkstry
    najkrótsza ścieżka
    najszybsza trasa
    sieć miejska
    optymalizacja trasy
    Opis:
    In this paper, we present a case study, showing step by step, how to speed up Dijkstra’s method by parallelizing its computation and using different data structures. We compare basic algorithm with its bidirectional version and investigate two-and-multi-thread implementations based on Fibonacci heaps and regular priority queues. Experimental results obtained for artificially generated graphs as well as real-world road network data are presented and described.
    Źródło:
    Archives of Transport System Telematics; 2016, 9, 2; 3-7
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intelligent Transport System auditing using road traffic micro-simulation
    Autorzy:
    Bazan, M.
    Ciskowski, P.
    Halawa, K.
    Janiczek, T.
    Kozaczewski, P.
    Madej, Ł.
    Rusiecki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/393731.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    traffic modeling
    intelligent transportation system
    road traffic simulations
    modelowanie ruchu
    inteligentny system transportowy
    symulacje ruchu drogowego
    Opis:
    ITS systems have been deployed for last one and a half decades. Their aim is to increase a traffic flow rate in a road network of an urbanized area, to improve the comfort of driving as well as to decrease the pollution. A lot of commercial software are is available to simulate road traffic in urbanized areas. Some of them are suitable to perform traffic simulations of intelligent transportation systems via traffic modeling. A process of traffic modeling exploiting numerical simulations for an urban area where an ITS is deployed requires provision of digital maps, traffic demand amongst city zones, traffic signalization micro-programs being executed in the environment that can imitate a dynamic behavior of traffic lights at intersections in the ITS. In this paper an execution environment, developed by the Ars Numerica Group, that launches a road traffic micro-simulation is used to audit a performance of intersections’ signalization micro-programs on one of the main arteries in the city of Wrocław (Poland).
    Źródło:
    Archives of Transport System Telematics; 2015, 8, 4; 3-8
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Some aspects of Intelligent Transport System auditing
    Autorzy:
    Bazan, M.
    Bożek, M.
    Ciskowski, P.
    Halawa, K.
    Janiczek, T.
    Kozaczewski, P.
    Rusiecki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/393760.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    intelligent transportation
    system audit
    travel time prediction
    fundamental diagram
    inteligentny transport
    audit systemu
    przewidywanie czasu podróży
    diagram fundamentalny
    Opis:
    Nowadays, in urbanized areas one of the most important matters is to determine a priori the time of driving from one zone of the city to another at various times of the day. The problem of travel time prediction is crucial in Intelligent Transportation Systems. The solution to this problem is a foundation of any route guidance system that will redirect drivers to their target destination via routes that have a lighter traffic load and thus higher travel velocity. In this paper is present a concept of a statistical methodology, developed by the ArsNumerica Group, that enables a quantity audit a travel time prediction algorithm. The methodology assumes that we are given database records of vehicles recognized by their unique identifier as well as duration times for which the messages with the predicted travel time are displayed VMS. the second aspect of ITS auditing considered in this paper is a placement of video cameras to measure vehicle stream velocity. Inappropriate camera location results in the fact that the stream velocity measured by them has a low usefulness for travel time prediction.
    Źródło:
    Archives of Transport System Telematics; 2015, 8, 3; 3-8
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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