高宏伟,王辉,刘玉影,于洋.基于图像测距的汽车防撞系统关键技术研究[J].电子测量与仪器学报,2017,31(6):820-826
基于图像测距的汽车防撞系统关键技术研究
Key technology research of car collision avoidance system based on image distance measurement
  
DOI:10.13382/j.jemi.2017.06.001
中文关键词:  图像测距  SIFT  匹配  汽车防撞
英文关键词:image based distance measurement  SIFT  matching  automobile collision avoidance
基金项目:辽宁省自然科学基金(201602652)、机器人学国家重点实验室开放课题(2016008)资助项目
作者单位
高宏伟 1. 沈阳理工大学自动化与电气工程学院沈阳110159; 2. 中国科学院沈阳自动化研究所机器人学国家重点实验室沈阳110016 
王辉 沈阳理工大学自动化与电气工程学院沈阳110159 
刘玉影 沈阳理工大学自动化与电气工程学院沈阳110159 
于洋 沈阳理工大学自动化与电气工程学院沈阳110159 
AuthorInstitution
Gao Hongwei 1. School of Automation and Electrical Engineering, Shenyang Ligong University, Shenyang 110159, China; 2. State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China 
Wang Hui School of Automation and Electrical Engineering, Shenyang Ligong University, Shenyang 110159, China 
Liu Yuying School of Automation and Electrical Engineering, Shenyang Ligong University, Shenyang 110159, China 
Yu Yang School of Automation and Electrical Engineering, Shenyang Ligong University, Shenyang 110159, China 
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中文摘要:
      针对汽车防碰撞系统的问题,以图像测距技术为背景,对其中的关键技术进行了研究。首先,根据相对运动学原理,由图像测距实验平台在假定沿光轴方向移动采集图片,在此基础上运用改进的SIFT匹配算法对图像进行匹配获得匹配点,计算所得到的匹配点的世界坐标,从而获得距离值;其次,通过室内实验计算证明了所推导的测距原理的正确性;最后,将图像测距技术应用在汽车防碰撞系统中,实验结果证明,测距系统平均误差为8.507 7 mm,精度较高,验证了整个方案的可行性和有效性。
英文摘要:
      The key technologies which based on the technology of image based distance measurement are researched for the avoidance of automobile collision. Firstly, according to the principle of relative motion and assume that the image distance measurement test bed is moved to collect images along the direction of the optical axis, and then the improved SIFT matching algorithm which is well used for image matching to obtain matching points. The world coordinates of the matching points are calculated to obtained distance value. Secondly, the validity of distance measurement principle is demonstrated by experiments. Finally, the image based distance measurement technology is applied into the automobile collision avoidance system. The error average of measurement system is 8.507 7 mm, the practicability and validity of the whole theme are proved by experiment results.
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