在Matlab平台下基于形态学方法对LIDAR数据进行建筑物边缘提取

Mathematic morphology-based building edge detection under Matlab platform

为了对机载LIDAR数据进行更好的应用,本文对LIDAR数据进行建筑物边缘提取方法进行了研究。本文介绍了LIDAR系统,以及LIDAR数据处理流程。首先将机载LIDAR数据三位点数据生成深度影像,在Matlab的平台下运用形态学方法对深度影像进行建筑物边缘提取,并与Log算子、Candy算子这两种方法相比较,得出运用形态学方法对建筑物边缘提取有较好的效果。形态学方法得到的建筑物边缘断点少,边缘更连续,因此更有利于判读。

For better using of the LIDAR data, this article studies the method of edge detection. It introduces the LIDAR system, and LIDAR data processing flowchart. The depth image is generated with LIDAR data. Mathematic morphology-based building edge detection under Matlab platform is performed. Comparing with Log operator and Candy operator methods, it concludes that morphology method has better results. The edges have less breakpoints, and are more continuous, so is more conducive to use.