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林业资源管理 ›› 2023›› Issue (1): 133-140.doi: 10.13466/j.cnki.lyzygl.2023.01.016

• 技术应用 • 上一篇    下一篇

基于激光点云数据的森林单木位置提取研究

曹庆安1(), 左勇2, 何原荣3(), 冷鹏1,2   

  1. 1.江西省核工业地质调查院,南昌 330038
    2.福州大学 空间数据挖掘与信息共享教育部重点实验室,福州 350116
    3.厦门理工学院数字福建自然灾害监测大数据研究所,福建 厦门 361024
  • 收稿日期:2022-11-26 修回日期:2023-02-17 出版日期:2023-02-28 发布日期:2023-05-05
  • 通讯作者: 何原荣(1977-),男,福建厦门人,教授,主要从事遥感、激光雷达数据处理等工作。Email:heyuanrong@126.com
  • 作者简介:曹庆安(1984-),男,安徽怀宁人,高级工程师,主要从事遥感、地理信息及相关数据处理等工作。Email:61469032@qq.com
  • 基金资助:
    江西省重点研发计划(20201BBG71001);宁夏回族自治区重点研发计划项目(2021BEG03001);江西省地质局科技研究项目(2022JXDZKJKJ07)

Location Extraction of Single Tree in Forest Based on Laser Point Cloud Data

CAO Qingan1(), ZUO Yong2, HE Yuanrong3(), LENG Peng1,2   

  1. 1. Jiangxi Nuclear Industry Geological Survey Institute,Nanchang 330038,China
    2. Key Laboratory of Spatial Data Mining and Information Sharing of Ministry of Education,Fuzhou University,Fuzhou 350116,China
    3. Big Data Institute of Digital Natural Disaster Monitoring in Fujian,Xiamen University of Technology,Xiamen,Fujian 361024,China
  • Received:2022-11-26 Revised:2023-02-17 Online:2023-02-28 Published:2023-05-05

摘要:

以河北塞罕坝林场落叶松林地为研究对象,通过选取样地布设水泥桩和反射片,针对森林单木提取精度不高等问题,开展基于激光点云数据的森林单木位置提取方法研究,为森林资源调查的单木定位和数量统计提供参考。通过将采集的森林地面点云数据,采用反射片模式与各个测站点云数据进行配准,提出一种改进的体素空间邻域和RANSAC圆柱拟合方法,分3种不同大小的样地进行单木位置提取实验,结果表明,该方法的单木位置提取效果较好,提取精度均在93%以上。

关键词: 激光点云, 单木位置提取, RANSAC圆柱拟合, 落叶松

Abstract:

This paper took the larch forest land of Saihanba Forest Farm in Hebei Province as the research object.Through setting cement piles and reflective sheets in the selected sampling sites,aiming at the low precision of forest single tree extraction,this paper conducted the research on the method of extracting the location of forest single tree based on laser point cloud data,which provided a reference for the location and quantity statistics of single tree in forest resource survey.Through the registration of the collected forest ground point cloud data with the cloud data of each survey site using the reflector model,an improved voxel space neighborhood and RANSAC cylinder fitting method was proposed to extract the single tree position from three different size sample plots.The results showed that the single tree position extraction effect of this method was good,and the extraction accuracy was more than 93%.

Key words: laser point cloud, single tree position extraction, RANSAC cylinder fitting, larch

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