车载激光扫描数据中杆状地物提取Extraction of rod-like objects from vehicle-borne LiDAR data
李永强,杨莎莎,李框宇,毛杰,李立雪
摘要(Abstract)：
针对车载激光扫描数据中对杆状地物提取效果不够理想的问题,该文提出一种基于聚类的杆状地物提取方法。首先将原始点云投影到水平面并进行格网划分,以单个格网为数据处理单元去除地面点;再基于处理数据对格网进行点云探测并编号,赋予同一属性值利用八邻域搜索对地物点聚类;然后以聚类后单个点云块为处理单元,利用各类地物特征,如高度、投影点密度、投影面积及形状等,逐步排除其他地物点,实现对杆状地物的精细提取。试验验证了文中所述方法对道路环境中杆状地物提取的有效性。
关键词(KeyWords)： 车载LiDAR;格网划分;八邻域搜索;聚类;杆状地物
基金项目(Foundation): 国家自然科学基金项目(41001304);; 国家十二五科技支撑计划项目(2012BAH34B);; 测绘地理信息公益性行业科研专项经费项目(201412020)
作者(Author): 李永强,杨莎莎,李框宇,毛杰,李立雪
DOI: 10.16251/j.cnki.1009-2307.2015.08.009
参考文献(References)：
- [1]李永强,吕海洋,苏蕾,等.车载LiDAR点云中建筑物立面的自动分割[J].测绘科学,2014,39(4):106-109.
- [2]魏征,董震,李清泉,等.车载LiDAR点云中建筑物立面位置边界的自动提取[J].武汉大学学报·信息科学版,2012,37(11):1311-1314.
- [3]李婷,詹庆明,喻亮.基于地物特征提取的车载激光点云数据分类方法[J].国土资源遥感,2012,92(1):17-21.
- [4]魏征,杨必胜,李清泉,等.车载激光扫描点云中建筑物边界的快速提取[J].遥感学报,2012,16(2):286-296.
- [5]倪欢,张继贤,段敏燕,等.面向对象的车载激光扫描点云建筑物立面提取[J].测绘科学,2014,39(4):92-96.
- [6]史文中,李必军,李清泉.基于投影点密度的车载激光扫描距离图像分割方法[J].测绘学报,2005,34(2):95-100.
- [7]吴宾,余柏蒗,岳文辉,等.一种基于车载激光扫描点云数据的单株行道树信息提取方法[J].华东师范大学学报:自然科学版,2013,38(2):38-49.
- [8]HU Y J,LI X,XIE J,et al.A Novel Approach to Extracting Street Lamps from Vehicle-borne Laser Data[C]//Proceedings of 2011 19th International Conference on Geoinformatics(Geoinformatics 2011),Shanghai,2011:24-26.
- [9]邹晓亮,于英,张永生,等.基于车载激光扫描数据的电线杆自动识别与定位[J].测绘科学,2012,37(2):91-93.
- [10]ZHONG R,WEI J,SU W,et al.A Method for Extracting Trees from Vehicle-borne Laser Scanning Data[J].Mathematical and Computer Modelling,2013,58(3):733-742.
- [11]YU Y,LI J,GUAN H,et al.A Marked Point Process for Automated Tree Detection from Mobile Laser Scanning Point Cloud Data[C]//Proc.Comput.Vis.Remote Sens.,Xiamen,2012:140-145.
- [12]LEHTOMKI M,JAAKKOLA A,HYYPPJ,et al.Detection of Vertical Pole-like Objects in a Road Environment Using Vehicle-based Laser Scanning Data[J].Remote Sens.,2010,2(3):641-664.
- [13]CABO C,ORDOEZ C,GARCA-CORTS S,et al.An Algorithm for Automatic Detection of Pole-like Street Furniture Objects from Mobile Laser Scanner Point Clouds[J].ISPRS Journal of Photogrammetry and Remote Sensing,2014,87:47-56.
- [14]WU B,YU B,YUE W,et al.A Voxel-based Method for Automated Identification and Morphological Parameters Estimation of Individual Street Trees from Mobile Laser Scanning Data[J].Remote Sensing,2013,5(2):584-611.
- [15]LIU H,WANG L,JEZEK K C.Automated Delineation of Dry and Melt Snow Zones in Antarctica Using Active and Passive Microwave Observations from Space[C]//IEEE Transactions on Geoscience and Remote Sensing,2006,44(8):2152-2163.
- [16]YANG B,WEI Z,LI Q,et al.Automated Extraction of Street-scene Objects from Mobile Lidar Point Clouds[J].International Journal of Remote Sensing,2012,33(18):5839-5861.