刘钱威,王金亮,麻卫峰,张建鹏

• 1:云南师范大学地理学部
• 2:云南省高校资源与环境遥感重点实验室
• 3:云南省地理空间信息技术工程技术研究中心

摘要(Abstract)：

针对地形变化较大、灌木多样等复杂林下主干提取效率低、精度不高等难点,该文提出一种复杂背景下林木点云精细提取方法。首先,进行地面点滤波并切片截取下层点云;然后,计算下层点云的法向量,提取法向量在Z轴的分量,循环剔除不满足条件的点;最后,循环具有噪声的基于密度聚类(DBSCAN)算法进行点云分割,实现林下主干点提取。以香格里拉为研究区,选择2景具有典型代表性的地基激光雷达样地点云数据进行试验,结果表明:研究中样地一提取精度90%,样地二提取精度95%,都取得较高精度。该方法能完整地提取林下主干点,对灌木与树干粘连等复杂环境下的林木提取具有较好的适用性。

关键词(KeyWords)： TLS;天然林;滇西北;迭代密度聚类

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41961060);; 国家重点研发计划政府间/港澳台重点专项(2018YFE0184300);; 云南基础研究重点项目(2019FA017);; 云南省高校科技创新团队项目;; 云南师范大学研究生科研创新基金项目(ysdyjs2020058)

作者(Author): 刘钱威,王金亮,麻卫峰,张建鹏

DOI: 10.16251/j.cnki.1009-2307.2021.08.015

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