利用激光三角法进行快速车辙检测  被引量:15

A Fast Method for Pavement Ruts Measuring with Laser Triangulation

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作  者:李清泉[1] 雷波[1,2] 毛庆洲[1] 傅智能[3] 

机构地区:[1]武汉大学交通研究中心,武汉市珞喻路129号430079 [2]武汉大学电子信息学院,武汉市珞喻路129号430079 [3]武汉武大卓越科技有限责任公司,武汉市武汉大学科技园430223

出  处:《武汉大学学报(信息科学版)》2010年第3期302-307,共6页Geomatics and Information Science of Wuhan University

基  金:国家科技支撑计划资助项目(2008BAK49B02);国家863计划资助项目(2007AA12Z241);测绘遥感信息工程国家重点实验室专项研究基金资助项目

摘  要:为了实现实时车辙测量及绘制足够密集的路面剖面线,分别设定全局和局部阈值,利用局部梯度极大值及邻域灰度进行激光线判断和提取;提出了基于Delaunay三角网的标定点网格建立及测量点的物方坐标反算方法。实验路段的检测结果表明,车辙检测仪的检测结果与人工检测结果符合得较好,可以作为路面车辙测量的可靠工具。A method for fast pavement ruts detection and system calibration with laser trian- gulation was proposed and implemented on a vehicle-borne road laser rut-meter. For real time ruts measuring and satisfyingly dense road profiling, the global and local thresholds were applied and the local maxim grade values and neighbor gray values were calculated to detect and extract laser lines. A method of calibration modal creation based on a Delaunay triangulation was proposed to backproject the world coordinates of laser points. Manual rut measurements and auto rut measurements utilizing the proposed method were carried out on selected road segment, respectively. The results show the auto measurements consist with the manual measurements, and the proposed method is reliable for pavement ruts measure- ment.

关 键 词:激光三角法 标定 车辙 DELAUNAY三角网 

分 类 号:P237.4[天文地球—摄影测量与遥感]

 

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