利用影像辅助 LiDAR 点云数据的建筑物提取方法研究

摘要

As a new earth observation technology, Airborne LiDAR can quickly obtain information of three -dimensional surface.Howto extract buildings from massive LiDAR point cloud data is a key work of data processing .Combined with LiDAR data and aerial imagerydata, this paper proposed a method of building extraction from LiDAR point clouds method using aerial images assists .First, extractthe contour of buildings from aerial imagery with object -oriented method, and then building outline information for reference ,extract building data from LiDAR point cloud.Finally, experiments demonstrate the effectiveness and feasibility of the method , andhave some practical value.%机载LiDAR作为一种新兴的对地观测技术，能够快速地获取地表三维信息。如何从海量LiDAR点云数据中提取建筑物是数据处理中的一项关键工作。本文结合LiDAR数据和航空影像的数据特点，提出了一种航空影像辅助的LiDAR点云建筑物提取方法，首先，采用面向对象方法从航空影像中提取建筑物的轮廓；然后，以建筑轮廓信息为参考，从LiDAR点云中提取建筑物的点云数据；最后，通过实验证明该方法的有效性与可行性。