利用机载激光点云数据生产DEM的关键技术分析
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摘要
着重分析了利用机载激光点云数据提取DEM的关键技术:预处理、点云滤波与分类、高精度DEM制作与质量评价技术;建立了基于机载激光点云的DEM生产技术流程,并将其应用于宁波市地理国情普查市情专项——高精度地表模型制作项目中;构建了宁波市建成区规则格网1∶2000比例尺的高精度DEM模型,为宁波市地理国情普查提供了数据基础。
The paper focuses on the analysis of the key steps of extracting DEM from airborne-Li DAR data,including point cloud data preprocessing,the data filtering and classification,high precision DEM manufacturing and quality evaluation. In this paper,the DEM production technology process based on airborne-Li DAR data is established,and will be used on a city situation special survey of geographical conditions: high precision surface modeling project in Ningbo. A high precision DEM model of 1 ∶ 2000 scale rule grid of Ningbo built-up area is constructed which provides a data base for the survey of geographical conditions in Ningbo.
The paper focuses on the analysis of the key steps of extracting DEM from airborne-Li DAR data,including point cloud data preprocessing,the data filtering and classification,high precision DEM manufacturing and quality evaluation. In this paper,the DEM production technology process based on airborne-Li DAR data is established,and will be used on a city situation special survey of geographical conditions: high precision surface modeling project in Ningbo. A high precision DEM model of 1 ∶ 2000 scale rule grid of Ningbo built-up area is constructed which provides a data base for the survey of geographical conditions in Ningbo.
引文
[1]张小红.机载激光雷达测量技术理论与方法[M].武汉:武汉大学出版社,2007:9-14.
[2]HAMMOUDI K,DORNAIKA F,SOHEILIAN B,et al.Extracting Wire-frame Models of Street Facades from 3D Point Clouds and the Corresponding Cadastral Map[J].Remote Sensing and Spatial Information Sciences,2010,38(3A):91-96.
[3]周淑芳,李增元,范文义,等.基于机载激光雷达数据的DEM获取及应用[J].遥感技术与应用,2007,22(3):356-360.
[4]林昀,吴敦,李丹农.基于机载激光雷达的高精度电力巡线测量[J].城市勘测,2011(5):71-74.
[5]杨晓云.一种基于形态学的激光雷达数据滤波算法的改进[J].测绘科学,2011,36(4):166-168.
[6]王继承.机载激光雷达技术和摄影测量匹配技术在DEM生产中的应用[J].测绘与空间地理信息,2015(5):128-129.
[7]周晓明.机载激光雷达点云数据滤波算法的研究与应用[D].郑州:信息工程大学,2011.
[8]郭波,黄先锋,张帆,等.顾及空间上下文关系的Joint Boost点云分类及特征降维[J].测绘学报,2013,42(5):715-721.
[9]黄先锋,李卉,王潇,等.机载Li DAR数据滤波方法综述[J].测绘学报,2009,38(5):466-469.
[10]熊爱武,杨蒙蒙.机载Li DAR点云数据误差分析[J].测绘通报,2014(3):75-78.
[11]胡永杰,程朋根,陈晓勇,等.机载激光雷达点云滤波算法分析与比较[J].测绘科学技术学报,2015(1):72-77.
[12]曹广强,瞿娜.浅谈利用激光点云数据制作DEM[J].测绘标准化,2011,27(2):44-46.
[13]王庆,陈磊,韩文泉.基于机载Li DAR技术的高精度DEM生产研究[C]∥第九届长三角科技论坛(测绘分论坛)论文集.宁波:[s.n.],2012:114-116.
[14]段佳,孙敬宇,刘海飞,等.利用机载激光三维点云构建张家界地貌DEM[J].测绘通报,2015(10):107-109.
[15]李鹏程,王慧,刘志青,等.一种从机载Li DAR点云数据获取DEM的方法[J].测绘通报,2012(5):59-62.
[2]HAMMOUDI K,DORNAIKA F,SOHEILIAN B,et al.Extracting Wire-frame Models of Street Facades from 3D Point Clouds and the Corresponding Cadastral Map[J].Remote Sensing and Spatial Information Sciences,2010,38(3A):91-96.
[3]周淑芳,李增元,范文义,等.基于机载激光雷达数据的DEM获取及应用[J].遥感技术与应用,2007,22(3):356-360.
[4]林昀,吴敦,李丹农.基于机载激光雷达的高精度电力巡线测量[J].城市勘测,2011(5):71-74.
[5]杨晓云.一种基于形态学的激光雷达数据滤波算法的改进[J].测绘科学,2011,36(4):166-168.
[6]王继承.机载激光雷达技术和摄影测量匹配技术在DEM生产中的应用[J].测绘与空间地理信息,2015(5):128-129.
[7]周晓明.机载激光雷达点云数据滤波算法的研究与应用[D].郑州:信息工程大学,2011.
[8]郭波,黄先锋,张帆,等.顾及空间上下文关系的Joint Boost点云分类及特征降维[J].测绘学报,2013,42(5):715-721.
[9]黄先锋,李卉,王潇,等.机载Li DAR数据滤波方法综述[J].测绘学报,2009,38(5):466-469.
[10]熊爱武,杨蒙蒙.机载Li DAR点云数据误差分析[J].测绘通报,2014(3):75-78.
[11]胡永杰,程朋根,陈晓勇,等.机载激光雷达点云滤波算法分析与比较[J].测绘科学技术学报,2015(1):72-77.
[12]曹广强,瞿娜.浅谈利用激光点云数据制作DEM[J].测绘标准化,2011,27(2):44-46.
[13]王庆,陈磊,韩文泉.基于机载Li DAR技术的高精度DEM生产研究[C]∥第九届长三角科技论坛(测绘分论坛)论文集.宁波:[s.n.],2012:114-116.
[14]段佳,孙敬宇,刘海飞,等.利用机载激光三维点云构建张家界地貌DEM[J].测绘通报,2015(10):107-109.
[15]李鹏程,王慧,刘志青,等.一种从机载Li DAR点云数据获取DEM的方法[J].测绘通报,2012(5):59-62.