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نویسنده(ها)

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محل انتشار

Iranian Journal of Electrical and Electronic Engineering

اطلاعات انتشار

هفتم،شماره۳، Sep ۲۰۱۱، سال

Multicamera vehicle tracking is a necessary part of any video–based intelligent transportation system for extracting different traffic parameters; such as link travel times and origin\destination counts. In many applications, it is needed to locate traffic cameras disjoint from each other to cover a wide area. This paper presents a method for tracking moving vehicles in such camera networks. The proposed method introduces a new method for handling inter–object occlusions; as the most challenging part of the single camera tracking phase. This approach is based on coding the silhouette of moving objects before and after occlusion and separating occluded vehicles by computing the longest common substring of the related chain codes. In addition, to improve the accuracy of the tracking method in the multicamera phase, a new feature based on the relationships among surrounding vehicles is formulated. The proposed feature can efficiently improve the efficiency of the appearance (or space–time) features when they cannot discriminate between correspondent and non–correspondent vehicles due to noise or dynamic condition of traffic scenes. A graph–based approach is then used to track vehicles in the camera network. Experimental results show the efficiency of the proposed methods.

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