地基激光雷达单木树冠体积提取球坐标积分法
麻卫峰, 吴小东, 王冲, 闻平, 王金亮, 曹磊, 肖正龙

A spherical coordinate integration method for extracting crown volumes of individual trees based on the TLS point clouds
MA Weifeng, WU Xiaodong, WANG Chong, WEN Ping, WANG Jinliang, CAO Lei, XIAO Zhenglong
图3 树冠三维球坐标系定义
Fig.3 Definition of three-dimensional spherical coordinate