| 结合强度信息的LIDAR数据滤波方法 |
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| 引用本文： | 袁枫,张继贤,张力,高井祥.结合强度信息的LIDAR数据滤波方法[J].测绘科学,2010,35(5):39-40,34. |
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| 作者姓名： | 袁枫 张继贤 张力 高井祥 |
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| 作者单位： | 中国矿业大学环境与测绘学院,江苏徐州,221116;中国测绘科学研究院,北京,100039;中国测绘科学研究院,北京,100039;中国矿业大学环境与测绘学院,江苏徐州,221116 |
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| 摘 要： | 机载激光扫描系统可以直接生成扫描区域的数字表面模型,但是为了提取数字地面模型还须对LIDAR数据进行滤波处理。本文分析了用坡度法对机载LIDAR数据进行滤波的不足,并结合LIDAR数据中的强度信息,提出了一种结合强度信息的LIDAR数据滤波方法。与坡度法相比,该方法提高了滤波的精度和效率。试验结果表明该方法计算速度快,并能够有效地滤除LIDAR数据中的地物。
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| 关 键 词： | 机载LIDAR 数字地面模型 坡度 区域增长 强度信息 |
Airborne LIDAR data filtering combing intensity information |
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| Abstract: | Digital surface model(DSM) can be acquired from airborne LIDAR(LIght Detection And Ranging) directly.But for the production of digital elevation model(DEM) from the point cloud,the filtering of the point cloud should be carried out in order to remove points representing surface of non-ground objects.According to the deficiencies of slope based method and intensity information of LIDAR data,a novel filtering algorithm for LIDAR data that combining range information and intensity information is presented in this paper.Compared to the slope based method,this method can improve precision and efficiency of filtering.Experiment results show that the proposed method can remove objects effectively and rapidly. |
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| Keywords: | airborne LIDAR DEM slope region growing intensity |
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