交通灯路口的前车运动状态测定研究  

Study on determination of preceding vehicle motion state at the traffic lights intersection

作　　者：吴彩林[1] 宁平华[1] 夏兴国[1] 

机构地区：[1]马鞍山职业技术学院电气工程系,安徽马鞍山243031

出　　处：《齐齐哈尔大学学报（自然科学版）》2016年第3期7-13,共7页Journal of Qiqihar University(Natural Science Edition)

基　　金：安徽省高校省级自然科学研究重点项目(KJ2016A697);安徽省高校省级自然科学研究重点项目(KJ2016A698);安徽省校企合作实践教育基地(2014sjjd037);安徽省省级教学团队(2013jxtd052);马鞍山市科技计划项目(RKX-2015-05)

摘　　要：为了提高汽车安全行驶系统的安全性及减少交通灯路口的交通事故,提出了一种交通灯路口的前车运动状态测定技术。该技术是采用双目立体视觉系统与三角测量原理相结合的思想,处理和定位由两个CCD摄像头从不同的角度采集到的前方车辆和交通灯的图像对,再利用立体匹配的方法,得出相互对应的两对特征点;其次,根据摄像机标定技术,得出摄像机的内外参数,再由平行双目立体视觉系统的三角测量原理及视差原理,得到摄像头距前车的距离和距交通灯的距离,再由距离差原理,实现对交通灯路口的前车运动状态的测定。实验结果表明,该设计方案有效地实现了对交通灯路口的前车运动状态的测定,具有较高的测量精度和应用价值。In order to improve the security of automobile driving safety system and reduce the accidents at the traffic lights intersection, it Studies the technology of determination of preceding vehicle movement state at the traffic lights intersection. The technology adopts the thought that combines binocular stereo vision system with the principle of triangulation, through two CCD cameras capturing the image information of preceding vehicle and traffic light from different angles, which are processed and positioned, and then, we find two matching points of the corresponding features by using the method of stereo matching. Then, according to the camera calibration technique, parallax theory and principle of triangulation, the distance from the camera to preceding vehicle and the distance from the camera to traffic lights are obtained. By the principle of differential distance again, the determination of preceding vehicle movement state at the traffic lights intersection is achieved. The experimental results show that the design can realize effectively the determination of preceding vehicle movement state at the traffic lights intersection, which has the high precision of measurement and value of applications.

关 键 词：交通灯路口 双目立体视觉 摄像机标定 三维测距 前车运动状态测定 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]