三维激光扫描系统测树原理及精度分析

Forest measurement principles and precision analysis of three-dimensional laser scanning system.

该文介绍了三维激光扫描系统的测量原理、测树过程和测树因子的获取方法.在甘肃省小陇山林业局党川林场,通过对立木扫描数据和伐倒木实测数据进行比较研究,结果表明用激光扫描系统进行测树能够获得较高的精度,做到精准监测,满足林业上测树的要求;同时,利用样木三维模型,可以方便地获取传统方法难以获取的测树因子,从而大大拓展了它在林业中的应用.

This paper introduces the measurement principles of three-dimensional laser scanning system and its process in forest measurement,and also elaborates how to gain forest measurement factors by this system.Through a comparing research of the statistical results in scanning data of stumpage and measured data of down timber in Dangchuan Forestry Center of Xiaolong Mountain of Gansu Province,the result indicates that people may gain higher precision of measurement,accurately monitor forest and meet the need of forest measurement by laser scanning system.At the same time,by establishing three-dimension model based on 3-D model of tree,people may expediently gain forest measurement factors which shall be harder by traditional methods.