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基于图像分割技术的城区机载LiDAR数据滤波方法

DOI: 10.6046/gtzyyg.2012.03.06, PP. 29-32

Keywords: 机载激光雷达(LiDAR),点云数据,边缘检测,区域生长,滤波

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Abstract:

为了获取高精度的DEM数据,采用了一种基于图像分割技术的方法对机载LiDAR数据进行滤波处理。该方法针对原始激光点云数据,首先运用边缘检测技术进行点云分割,准确提取建筑物的边缘信息,确定地面种子点;然后按照一定的准则进行区域生长,最终得到裸露地面点集。针对几组不同地貌特征的城区实测数据进行滤波实验,通过定性和定量分析,验证了该算法不但计算速度快、精度高,而且还具有较强的稳健性。

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