交通运输系统工程与信息 ›› 2012, Vol. 12 ›› Issue (增1): 80-85.

• 城市道路智能系统 • 上一篇    下一篇

交通事故现场摄影测量中的对应点匹配技术研究

鲁光泉*1,张喆1,刘文超2   

  1. 1.北京航空航天大学 车路协同与安全控制北京市重点实验室,北京 100191; 2. 清华大学 汽车安全与节能国家重点实验室,北京100084
  • 收稿日期:2011-12-15 修回日期:2012-02-06 出版日期:2012-12-28 发布日期:2012-06-06
  • 作者简介:鲁光泉(1974-),男,云南弥渡人,副教授.
  • 基金资助:

    国家道路交通安全科技行动计划(2009BAG13A07-1);国家自然科学基金项目(50522205).

The Technology of Corresponding Points Matching of Photogrammetry in Traffic Accident Scene

LU Guang-quan 1, ZHANG Zhe 1, LIU Wen-chao 2   

  1. 1. Beijing Key Laboratory for Cooperative Vehicle Infrastructure Systems and Safety Control, Beihang University, Beijing 100191, China; 2. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084,China
  • Received:2011-12-15 Revised:2012-02-06 Online:2012-12-28 Published:2012-06-06

摘要: 目前,由交通事故处理不及时而引发的交通拥堵及二次事故等现象越来越受到人们的关注.对应点匹配技术是交通事故现场三维重建中的关键技术,对交通事故现场再现有重要的作用,有助于缩短交通事故的处理时间.本文首先介绍了摄影测量与对极几何的相关知识,利用对极几何知识将对应点的搜索范围由一副图像缩小到一条直线.然后利用特征点匹配强度系数法进行对应点匹配,在匹配的过程中将图像的相似性假设和连续性假设相结合,在对极线上寻找匹配强度最大的点作为对应点.在实际的交通事故试验中,采用该方法能够较为准确地搜索对应点,匹配准确率可达到80%以上.

关键词: 交通安全, 对应点匹配, 摄影测量, 交通事故, 对极几何

Abstract: The traffic congestion and the second accidents caused by congestion receive increasingly attentions of the society. The technology of corresponding points matching is the key of the three-dimensional reconstruction of traffic accidents scene, which is important for the reproducing of the traffic accident scene and can assist reducing traffic accidents handling time. The paper first introduces relevant knowledge of the photogrammetry and epipolar geometry. With the knowledge, the searching area of corresponding points is changed from the whole picture to a line. Then, the method of feature points’ strength factor is used, and combined the assumption of pictures’ comparability and continuity to search the corresponding point. With the foundation above, the point which is on the corresponding line and also has the biggest strength factor is the corresponding point. In the experiment of traffic accidents, this method can search the corresponding points with high accuracy.

Key words: traffic safety, corresponding points matching, photogrammtery, traffic accident, epipolar geometry

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