北京林业大学学报2016，Vol.38Issue(10)：15-20,6.DOI:10.13332/j.1000--1522.20150490
基于点云骨架的单木分枝参数提取研究
Extraction of individual tree branch parameters from skeleton model based on point cloud data
摘要
Abstract
Terrestrial laser scanning technology plays an important role in extracting individual tree parameters. Meanwhile, graphics algorithms provides feasible methods for evaluating structural parameters. In this paper, a method of extracting individual tree structural parameters has been put forward. We extracted individual tree’s skeleton model by SkelTre algorithm. Then branch structure was identified by topological feature of the skeleton model from searching the connection nodes among different branches. We calculated branch length and made the cross-section through the skeleton model at branch connection points. Moreover, convex hull algorithm was used for extracting a plane polygon and calculating branch diameter through the point cloud outsourcing. From the regression analysis between field measurement and model estimated measurement, we acquired the compared branch length and diameters. Branch length’s regression of filed measurement and model estimation performed with Y = 1. 006 X+1. 335 , significant value of 0. 001. Meanwhile, branch diameter’s regression of filed measurement and model estimation performed with Y =0. 923 X +0. 105 , significant value of 0. 000 . The experiment results demonstrate that extracting skeleton model to identify individual tree’s branch structure and acquire structure parameters, such as branch length and branch diameter is applicable and promising.关键词
地面激光扫描/骨架模型/分枝直径/分枝结构Key words
terrestrial laser scanning/skeleton model/branch diameter/branch structure分类
农业科技引用本文复制引用
刘金鹏,张怀清,刘闽,李永亮,李伟娜..基于点云骨架的单木分枝参数提取研究[J].北京林业大学学报,2016,38(10):15-20,6.基金项目
中央级公益性科研院所基金项目(IFRIT201503)、“863”国家高技术研究发展计划项目(2012AA102002)。 （IFRIT201503）
