Then, we emphasize the principle of laser telemeter, the actuality, the principle, the design of laser scanning and the processing to cloud of points.
接着重点研究了激光测距的原理，激光扫描的现状、原理和设计和对点云的处理。
In a word, this paper based on the airborne LIDAR points cloud data achieves the extraction of urban building by using digital image processing technique without any assistance data.
总之，本文以航空LIDAR点云数据为基础，在无其他辅助数据的情况下，采用数字图像处理技术，实现了基于航空LIDAR点云数据提取城市地区建筑物的目标。
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