一种基于形态学的激光雷达数据滤波算法的改进Improvement morphological filter for on-ground measurements from LiDAR data
杨晓云
摘要(Abstract)：
机载激光雷达是DEM生产的重要技术手段之一。为了获取高分辨率的DEM,首先要将建筑物、车辆、植被等非地面点去除,这一过程称为滤波。本文在现有算法的基础上提出一种改进的形态学滤波算法。该算法逐步增大滤波窗口尺寸,并采用自适应的高差阈值,较好地保留了地形拓扑信息。试验采用ISPRS提供的参考数据进行测试分析,该数据代表典型的城市地区。试验结果表明上述算法可有效地去除绝大部分的非地面点。
关键词(KeyWords)： 激光雷达;形态学;滤波;数字高程模型
基金项目(Foundation): 广西教育厅科研项目(200808LX348);; 广西工学院科学基金项目(院科自0977204)
作者(Author): 杨晓云
DOI: 10.16251/j.cnki.1009-2307.2011.04.019
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