薛联凤　云挺　嵇俊　高纪青　王宇飞

摘要：三维激光扫描仪因为获取数据速度快和精度高、对植物没有破坏性等优势，受到林业工作者广泛采用，但由于树木的形态结构极其复杂，在扫描中存在遮挡和风吹扰动等情况，造成扫描获取的树叶点云数据的失真。本文提出了一种新的阔叶树叶面重建方法。首先将激光扫描仪获取的散乱点云数据集合，采用多项式拟合的方法得到精确的树叶边界线，根据分而治之三角面片算法进行曲面拟合，拟合的叶面进行三角面片重建，得到真实叶片模拟图像。

关键词：点云数据；重建；分而治之；阔叶树；激光扫描仪

中图分类号：S 758.1；TN 957文献标识码：A文章编号：1001-005X（2015）01-0006-05

Research on the 3D Reconstruction of Leaves for

Broadleaved Trees Based on Point Cloud Data

Xue Lianfeng，Yun Ting，Ji Jun，Gao Jiqing，Wang Yufei

（College of Information Science and Technology，Nanjing Forestry University，Nanjing 210037）

Abstract：Threedimensional laser scanning is adopted by the forestry workers because of its high speed and high precision of obtaining data with no damage to the plants.But due to the extremely complex morphology of trees and the wind disturbance，the obtained point cloud has relatively large distortion and interference.This paper puts forward a new reconstruction method of broadleaf foliage.Firstly，the scattered point cloud data sets obtained by laser scanning are fitted by polynomial fitting method to obtain the accurate foliage border.Then，according to the divide and rule triangle algorithm and surface fitting，the optimization algorithm is used after the triangle reconstruction of the fitted foliage to achieve the 3D reconstruction.This method has good pretreatment on the deviation caused by foliar jitter and the treatment effect is satisfied.

Keywords：point cloud data；reconstruction；divide and conquer；broadleaved tree；laser scanner

引文格式：薛联凤，云挺，嵇俊，等.基于激光点云数据的阔叶树叶片重建研究[J].森林工程，2015，31（1）：6-11.阔叶树一般指双子叶植物类的树木，它的叶片是扁平、较宽阔，叶脉成网状。阔叶树不但经济价值高，而且在净化生态环境空气质量和产业化建设中都有着重要地位。保护研究发展阔叶树是保护生物多样化，防治植物衰退和提高林产品附加值的重要途径。本论文借助地面激光扫描仪获取点云数据，采用多项式拟合的方法得到精确的树叶边界线，根据分而治之三角面片算法进行曲面拟合，拟合的叶面进行三角面片重建。

地面激光扫描仪设备不会对被测物造成任何损伤，且能以点云的形式精确还原出目标体的三维数据，而且三维激光扫描仪在计测学中具……