• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 25 Issue 5
Oct.  2012
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Article Contents
JIANG Sheng, WANG Dianhai, QU Zhaowei, HU Hongyu. Extraction and Calibration of Trajectory Characteristics of Vehicles at Intersections[J]. Journal of Southwest Jiaotong University, 2012, 25(5): 784-789. doi: 10.3969/j.issn.0258-2724.2012.05.009
Citation: JIANG Sheng, WANG Dianhai, QU Zhaowei, HU Hongyu. Extraction and Calibration of Trajectory Characteristics of Vehicles at Intersections[J]. Journal of Southwest Jiaotong University, 2012, 25(5): 784-789. doi: 10.3969/j.issn.0258-2724.2012.05.009

Extraction and Calibration of Trajectory Characteristics of Vehicles at Intersections

doi: 10.3969/j.issn.0258-2724.2012.05.009
  • Received Date: 02 Mar 2012
  • Publish Date: 25 Oct 2012
  • In order to probe into the running characteristics of vehicles at intersections, the composite feature extraction algorithm was used to obtain the trajectory characteristics of vehicles in images. Based on the algorithm of polygon linear scan calibration, considering the influence of the distortion of CCD (charge-coupled device) camera and introducing center deviation factor, an MRSCCO (multi-region scanning calibration considering about center offset) algorithm was proposed to transform the trajectory features of images into real motion features. Finally, data extracted using this algorithm were compared with both results obtained by the algorithm of polygon linear scan calibration and real data. The experimental results show that the proposed algorithm can effectively extract the trajectories of vehicles at intersections and accurately express the relevant characteristics. Compared with the real vehicle speed, the vehicle speed obtained by the MRSCCO algorithm has an error of less than 4%.

     

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