定量结构模型的地面激光雷达单木分割应用  

Application of quantitative structure model in TLS single wood segmentation

作　　者：李萍[1] 冯仲科[1] 苏珏颖 LI Ping;FENG Zhongke;SU Jueying(Precision Forestry Key Laboratory of Beijing,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]北京林业大学精准林业北京市重点实验室,北京100083

出　　处：《测绘科学》2022年第2期151-156,199,共7页Science of Surveying and Mapping

基　　金：中央高校基本科研业务费专项资金(2015ZCQ-LX-01);国家自然科学基金项目(U1710123)。

摘　　要：针对传统每木检尺的小班调查因子测量方法耗时长、效率低、人为操作误差大等问题,该文研究了一种定量结构模型(QSM)实现单木的三维重建,并基于地面激光雷达(TLS)所获取的点云数据提取研究区单木的胸径、树高参数。该算法重构了单木的三维模型,且TLS数据所求得的胸径、树高与实测数据具有较好的一致性,提取结果精度较高。本研究采用的方法在提取林分特征因子方面具有有效性和可行性,可为未来森林资源动态监测方法提供参考。To address the problems of time-consuming,inefficient,and human-operated error of the traditional small-group survey factor measurement method of each tree checker,in this paper,a quantitative structural model(QSM)was used to reconstruct single tree in three dimensions and extract the parameters of diameter at breast height and height of single tree in the study area based on terrestrial laser scanning(TLS)point cloud data.The algorithm reconstructed the single tree 3 D model,and the diameter at breast height and tree height obtained from the TLS data were in good agreement with the measured data,and the extraction results were of high accuracy.The method used in this study is effective and feasible in extracting stand characteristic factors,and can provide a reference for future forest resource dynamic monitoring methods.

关 键 词：地基激光雷达 单木参数 定量结构模型 精度 

分 类 号：P237[天文地球—摄影测量与遥感]