基于LIDAR回波信息的道路提取  

Road extraction based on the echo information of LiDAR

作　　者：曾静静[1] 卢秀山[1] 王健[1] 杨书大[1] 

机构地区：[1]山东科技大学,山东青岛266510

出　　处：《测绘科学》2011年第2期142-143,174,共3页Science of Surveying and Mapping

基　　金：海洋公益性行业科研专项经费项目"机载激光扫描数据精度控制及海岸带特征信息提取技术"(200705003)

摘　　要：机载激光扫描系统在采集三维坐标的同时,也提供回波信息(回波次数、回波强度)。本文提出了一种利用回波信息提取道路的方法:逐层加密TIN提取数字地形模型(DTM),根据点云的回波信息从DTM中提取道路信息,通过搜索孤立点的滤波算法删除其中的噪声点。最后用实测数据对提取的道路信息进行精度分析,验证了该提取方法的有效性。Airborne laser scanning system can provide three-dimensional coordinate and eeho information （echo times, echo intensity）. A method of road extraction from echo information was presented in the paper： digital terrain model （DTM） was extracted densely layer by layer, road information was collected from the DTM, and noise points were deleted with algorithm of searching isolated points. At last, the validity of this method was demonstrated by analyzing the extraction precision of road information with actual measurements.

关 键 词：道路提取 回波信息 激光扫描 机载激光雷达 

分 类 号：P231[天文地球—摄影测量与遥感]