随着LIDAR技术的出现，三维建筑物的提取也受到越来越多的重视。由于LIDAR数据分布的不连续性和不规律

性，直接从机载激光扫描测距数据中进行建筑物提取较为困难。本文提出了一种结合灰度影像的LIDAR数据三维建筑物提

取方法，分三个步骤：首先对灰度影像进行建筑物二维提取；然后将处理后影像和LIDAR数据粗匹配，初步确定LIDAR数

据中的三维建筑物区域；最后利用一组阈值操作进行三维建筑物的精确提取。实验结果表明该方法简单实用，适应性强。-With the emergence of LIDAR technology, three-dimensional building extraction has also been more and more attention. LIDAR data distribution as a result of non-continuity and regularity, directly from the location of airborne laser scanning data extraction more difficult to carry out the building. In this paper, a combination of gray-scale image of the LIDAR data extraction method of three-dimensional buildings, divided into three steps: First of all buildings on the two-dimensional gray-scale image extraction　then processed LIDAR data images and rough match, LIDAR data to determine the initial three-dimensional buildings in the region　the final threshold of use of a group of operations extract accurate three-dimensional structures. The experimental results show that the method is simple and practical, adaptable.