This paper proposes a novel method for measurement of traffic parameters, such as the number of passed vehicles, velocity and occupancy rate, by video image analysis. The method is based on a region classification followed by spatio-temporal image analysis. Local detection region images in traffic lanes are classified into one of four categories: the road, the vehicle, the reflection and the shadow, by using statistical and structural features. Misclassification at a frame is corrected by using temporally correlated features of vehicles in the spatio-temporal image. This capability of error correction results in the accurate estimation of traffic parameters even in high traffic congestion. Also headlight detection is employed for night time operation. Experimental results show that the accuracy is more than 94+ACU- in our test database of diverse operating conditions such as daytime, shadowy daytime, highway, urban way, rural way, rainy day, snowy day, dusk and nighttime. The average processing time is 30 ms per frame when four traffic lanes are processed, and real-time Operation could be realized while ensuring robust detection Performance even for high-speed vehicles up to 150 km h-1.


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    Title :

    Measurement of traffic parameters in image sequence using spatio-temporal information


    Additional title:

    Messung der Straßenverkehrsparameter in Bildsequenzen mittels räumlich-zeitlicher Information


    Contributors:
    Lee, Daeho (author) / Park, Youngtae (author)

    Published in:

    Measurement Science and Technology ; 19 , 11 ; 115503/1-115503/9


    Publication date :

    2008


    Size :

    9 Seiten, 13 Bilder, 3 Tabellen, 31 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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