利用三维点云数据计算单木树冠体积的扇形分割算法  

A New Algorithm for Calculating Crown Volume of Single Tree Based Sector Partition Using 3D Point Cloud Data

作　　者：李宏星[1] 欧阳玉华[2] 汪海洪[3] LI Hongxing;OUYANG Yuhua;WANG Haihong(School of Landscape and Architecture Engineering,Hubei Ecology Vocational College,Wuhan 430200,China;School of Urban Construction,Wuchang University of Technology,Wuhan 430223,China;School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China)

机构地区：[1]湖北生态工程职业技术学院园林建工学院,湖北武汉430200 [2]武昌理工学院城市建设学院,湖北武汉430223 [3]武汉大学测绘学院,湖北武汉430079

出　　处：《测绘地理信息》2021年第6期101-103,共3页Journal of Geomatics

基　　金：全国职业教育科研规划课题(2019QZJ077)。

摘　　要：基于切片法提出了利用三维点云数据计算树冠体积的扇形分割算法,该方法能更好地顾及树冠轮廓形状。通过实例验证了方法的有效性,结果表明该方法计算的树冠体积值介于凸包法和体元法之间,有效克服了凸包法结果偏大和体元法结果偏小的问题。Based on the slice method,a new algorithm named as sector partition method for calculating tree crown volume was proposed and validated using 3 D point cloud data.The shapes of tree crowns can be better considered using the new method.The volume values of our method were smaller than those of the convex hull method,and larger than those of the voxel method.Experimental results indicate that the new method can efficiently overcome the overestimation by the convex hull method and the underestimation by the voxel method.

关 键 词：点云 树冠体积 扇形分割算法 体元法 三维激光扫描 

分 类 号：P234[天文地球—摄影测量与遥感]