【摘要】 过滤是LIDAR数据预处理的重要步骤,过滤的目的是把LIDAR数据分成地面点和非地面点,它是获取高精度数字高程模型的关键。详细分析、研究了常用的LIDAR数据过滤方法,并对其中的最大局部倾斜度过滤方法进行了一定的改进。更多还原

【Abstract】 The aim of the filtering of LIDAR data set is to divide the data set into ground points and non-ground points. The filtering of LIDAR data set is a crucial step to obtain the DEM with high precision. This paper detailedly studies several filtering methods that are used in common at present, brings about some improvement to the MLS filtering method and compares the filtering results.更多还原