摘要
在基于机器视觉的轨距检测系统中,应用"背对式"双目视觉系统实现非接触轨距测量。针对多像机间无公共视场,提出了"背对式"双目视觉系统定标方法。在标定靶建立棋盘格转换矩阵,结合摄像机坐标系转换矩阵,得到"背对式"双目系统中摄像机之间的相对位置关系。用标定结果进行轨距测量,测量示值误差小于0.2mm,证明了标定方法的正确性。
The Back-to Type binocular vision system is to realize the contactless gauge measurement in gauge inspection system which has been based on computer vision. In case of the multi-camera without public visual field, the Back-to Type binocular vision system calibration is proposed. By using the checkerboard conversion matrix, which has been set up on the calibration target, and the camera coordinate system transformation matrix, the relative position of the Back-to Type binocular vision system is obtained. Results of the gauge measurement show that the calibration method is accurate with only an error of 0.2 mm.
出处
《城市轨道交通研究》
北大核心
2013年第1期24-27,37,共5页
Urban Mass Transit
基金
上海市自然科学基金项目(12ZR1412300)
上海市教育委员会重点学科建设项目(J51401)
上海市教育委员会科研创新项目重点项目(12ZZ184)
上海市教育委员会科研创新项目一般项目(12YZ149)
上海高校青年教师培养资助计划项目(ZZGJD12007)
关键词
轨距测量
背对式双目视觉系统
定标方法
gauge measurement
Back-to type binocular vision system
calibration method
