基于多源点云数据融合的单木树形重建  

Contour reconstruction of single tree based on multi-source point cloud data fusion

作　　者：晏娅萍 岳彩荣[1] YAN Ya-ping;YUE Cai-rong(College of Forestry,Southwest Forestry University,Kunming 650224,China;Yunnan Construction Investment First Investigation and Design Co.,LTD.,Kunming 650031,China)

机构地区：[1]西南林业大学云南高校林业3S技术工程研究中心,昆明650224 [2]云南建投第一勘察设计有限公司,昆明650031

出　　处：《桂林理工大学学报》2020年第3期568-573,共6页Journal of Guilin University of Technology

基　　金：国家自然科学基金项目(31260156);云南省教育厅项目(2018JS330)。

摘　　要：基于Smart3D软件、Maptek软件分别对无人机倾斜影像和地面三维激光点云数据进行融合处理及树木三维建模。通过点云配准、点云降噪以及坐标纠正等一系列处理,实现了空-地多源点云数据融合技术的树木三维模型重建。基于树木三维重建模型量算的树高、胸径、胸高断面积等几何参数与地面实测的树木参数精度高达99.7%、97.8%和94.1%,说明基于不同来源的点云数据的树木三维树型重建可以为森林或城市绿地调查提供准确高效的技术途径,具有广阔的应用前景。In the forest survey and urban greening management,the combination of UAV tilt photogrammetric technology and the ground-based 3 D laser scanning technology can quickly and accurately obtain the geometric parameters of the trees.Based on Smart3 D software and Maptek software,the fusion processing of UAV tilt image,ground 3 D laser point cloud data and 3 D modeling of trees are carried out respectively.Through a series of processing such as cloud registration,cloud noise reduction and coordinate correction,the 3 D tree model reconstruction of air-ground multi-source point cloud data based on fusion technology is realized.The geometrical parameters and ground parameters of tree height,diameter at breast height and sectional area of breast height are measured by 3 D reconstruction model.The accuracy is up to 99.7%,97.8%and 94.1%,which indicates that 3 D tree reconstruction based on point cloud data from different sources can provide accurate and efficient technical approaches for forest or urban green space investigation,with broad application.

关 键 词：倾斜摄影测量技术 三维激光扫描技术 点云融合 单木 树形重建 林业 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] S771.8[自动化与计算机技术—控制科学与工程]