| 倪文俭,过志峰,孙国清,黄华兵.基于地基激光雷达数据的单木结构参数提取研究[J].高技术通讯(中文),2010,20(2):191~198 |
| 基于地基激光雷达数据的单木结构参数提取研究 |
| Research on extraction of tree structure parameters from terrestrial laser scanner data |
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| DOI： |
| 中文关键词: 地基激光雷达， 景深数据， 单木结构参数， 点云 |
| 英文关键词: terrestrial lidar, range images, tree structure parameters, point cloud |
| 基金项目:863计划(2006AA12Z114)和973计划(2007CB714404)资助项目 |
| 作者 | 单位 | | 倪文俭 | 中国科学院遥感应用研究所遥感科学国家重点实验室；中国科学院研究生院 | | 过志峰 | 中国科学院遥感应用研究所遥感科学国家重点实验室 | | 孙国清 | Department of Geography, University of Maryland, College Park, MD 20742 USA | | 黄华兵 | 中国科学院遥感应用研究所遥感科学国家重点实验室 |
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| 中文摘要: |
| 针对利用地基激光雷达数据提取单木结构参数的问题，提出了一套较为复杂林分条件下的地基激光雷达数据获取方案与单木结构参数提取方法。首先利用八邻点距离检验法对点云数据中的多次散射点进行滤除，进而通过对现有的变尺度地面点识别方法进行改进，实现了对研究区内的地面点云的快速识别。通过对地基激光雷达数据的分析，提出了一种基于树干点云垂直连续分布特征的树干识别方法，在此基础上提取了单木位置、胸径和树高，最后将所提取的结构参数与林业测量数据进行了对比，结果具有较好的一致性。 |
| 英文摘要: |
| This study mainly addresses the problem of tree structure parameter extraction from terrestrial laser scanner data. This paper gives a detailed description of the study and presents a new scheme for acquisition of terrestrial laser scanner data of a medium dense forest, as well as a new method for extraction of the tree structure parameters of the forest from its terrestrial scanner data. The method first filters the multiple scattering points effectively through checking the eight neighbour’s distance to scanner, and then improves the multi scale method for ground points recognition to extract the ground points in the research area quickly. Based on the analysis of the point cloud, the vertical continuity of trunks points are used to identify tree trunks. Finally, tree structure parameters, such as tree position, diameter at breast height (DBH) and tree height, are extracted. Compared with the forest inventory data, the parameters extracted with the new method show a good consistency. |
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