A real-time method for DSM generation from airborne LiDAR data
A real-time method for DSM generation from airborne LiDAR data
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DOI：
10.1109/i2mtc.2013.6555443
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发表时间：
2013-05
期刊：
影响因子：
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通讯作者：
Deming Kong;Lijun Xu;Xiaolu Li;Shuyang Li
中科院分区：
文献类型：
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作者：
Deming Kong;Lijun Xu;Xiaolu Li;Shuyang Li
提出了一种基于机载激光雷达（LiDAR）数据实时生成数字表面模型（DSM）的新方法。该方法首先通过线性化和网格化操作将激光足迹在每条扫描线上的位置和高程值转化为规则的离散阵列。然后，对阵列进行数学形态学处理，得到地面和地表目标的数字模型。在机载LiDAR扫描过程中，在不断获取扫描线的同时，实时生成并显示扫描线中的数字模型。最后，当扫描过程完成时，通过合并所有扫描线上的数字模型来获得整个采集点云的DSM。利用真实的机载LiDAR数据对该方法进行了验证。
This paper presents a new real-time method for the DSM (Digital Surface Model) generation from the airborne LiDAR (Light Detection And Ranging) data. In this method, the positions and elevation values of the laser footprints in each obtained scanning line are firstly transformed into a regular discrete array by the operations of linearization and gridding. After that, mathematical morphology is implemented to the array to obtain the digital models of the ground and objects on ground surface. In the airborne LiDAR scanning process, while the scanning lines are continually obtained, the digital models in the scanning lines are real-timely generated and displayed. Finally, when the scanning process is completed, the DSM of the whole acquired point cloud is attained by combining the digital models in all scanning lines. The proposed method is validated by using real airborne LiDAR data.