Number of vehicles passing by in a period of time on the highway is a powerful index to measure current traffic situation, it signifies on traffic control. Video-based method is used commonly in vehicles statistics, it identifies and counts vehicles in image sequences taken from a static camera. In this paper, we present a novel method for identifying and counting vehicles. This method firstly segments regions of moving object, then deals with this result to determine whether it is a full vehicle and finally counts vehicle by a simple formula. The experiment result shows that the proposed method could count vehicles accurately in the scene of traffic flow monitoring .

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