Lane-changing track is one of the most important topics in traffic engineering domain. In the past decades, continued efforts have been made to the research and development. Although the video traffic detection technology has been widely used in the detection of traffic incident, most of them are suitable for the identification of common parameters, which leads to little further investigation and implication of traffic data obtained by video technology, for few direct economic benefits. Therefore, Via the principles of photography in this paper, we uses VTC Software systems cultivating independent to convert the coordinates between the ground and the video, then the lane -changing track could be extracted from Video data. By the proposed method, we could use the abundance of video data and construct a platform for vehicle lane -changing research.
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