林业工程学报2016，Vol.1Issue(5)：107-114,8.DOI:10.13360/j.issn.2096-1359.2016.05.019
基于地面激光雷达的单木枝干建模方法
The 3D reconstruction of tree branches from point cloud based on terrestrial laser scanner
摘要
Abstract
The standing trees modeling methods based on the point cloud data with high accuracy in the nondestructive measurements of forestry received more and more attentions. Due to the various shapes and complex topological structures of different trees, the conventional methods in trees modeling always achieve unsatisfactory performance. In this paper, a novel method of 3D reconstruction of tree branches from terrestrial laser radar point cloud data was first proposed. The new method included the following steps:First, branches and leaves were divided apart from point clouds of trees, and the tree leaves were fragmented. After that, the skeletons of branches were extracted by constructing a weighted matrix based on Laplace, and an iterative procedure was accept to solve the Laplace equation. Then, the diameters of branches were calculated by an improved random⁃Hough arithmetic. Finally, the tree model was established by generalized cylin⁃der, and the three⁃dimensional reconstruction of tree branches�skeletal structures can be generated. The approach is val⁃idated to carry on modeling for standing forest stock directly with no manual intervention. We test our proposed method on 4 different kinds of trees on campus. The results showed that the method allows higher precisions of reconstruction with detailed features.关键词
地面激光雷达/点云数据/单木建模/树木形态Key words
terrestrial laser scanner/point cloud/tree reconstruction/tree morphology分类
天文与地球科学引用本文复制引用
张冬,严锐,云挺,薛联凤,阮宏华..基于地面激光雷达的单木枝干建模方法[J].林业工程学报,2016,1(5):107-114,8.基金项目
国家自然科学基金项目（31300472）；江苏省自然科学基金项目（BK2012418）；江苏高校优势学科建设工程资助项目（PAPD）；国家重点基础研究发展计划（2012CB416904）；农业部海南省观测实验站重点开放课题（RRI－KLOF201501）。 （）
