北京测绘2023，Vol.37Issue(9)：1237-1242,6.DOI:10.19580/j.cnki.1007-3000.2023.09.007
激光雷达的立体体元模型在森林冠层间隙率提取中的应用
Application of three-dimensional voxel model on extraction of forest canopy gap ratio with LiDAR
摘要
Abstract
In view of the shortage that the optical forest canopy gap rate extraction method is greatly affected by weather,this paper proposed a three-dimensional volumetric model method for forest canopy extraction based on light detection and ranging(LiDAR)point cloud data,and used point cloud projection and DHP for comparison.The results showed that the variation trend of gap rate extracted from different volume cell sizes was basically the same.The larger the volume cell size was,the smaller the gap rate extracted was.When compared with point cloud projection and DHP,the correlation between the extracted results of the proposed method and those of the two methods gradually increased with the increase of the volume element.When the top Angle was 0°～80° and 10°～65°,the correlation coefficient was above 0.91,indicating that the proposed method could be used to extract the forest canopy gap ratio.关键词
立体体元/森林冠层间隙率/激光雷达/半球成像Key words
solid element/forest canopy gap ratio/light detection and ranging(LiDAR)/digital hemispherical photography(DHP)分类
天文与地球科学引用本文复制引用
曹庆安,冷鹏,何原荣..激光雷达的立体体元模型在森林冠层间隙率提取中的应用[J].北京测绘,2023,37(9):1237-1242,6.基金项目
江西省重点研发计划(20201BBG71001) （20201BBG71001）
江西省地质局科技研究项目(2022JXDZKJKJ07) （2022JXDZKJKJ07）
