| 用多种策略从机载Lidar数据中提取建筑脚点 |
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| 引用本文： | 王刃, 徐青, 朱新慧. 用多种策略从机载Lidar数据中提取建筑脚点[J]. 武汉大学学报 ( 信息科学版), 2008, 33(7): 688-691. |
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| 作者姓名： | 王刃 徐青 朱新慧 |
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| 作者单位： | 1西安测绘研究所,西安市雁塔中路1号710054;2信息工程大学测绘学院,郑州市陇海中路66号450052 |
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| 摘 要： | 设计了一种采用多种策略的建筑脚点提取方法,针对建筑脚点提取中的两个关键步骤———数据分类和建筑脚点分割,分别提出和引入了邻近关系和r半径点密度,从仅反映单次反射的DSM数据中,直接提取出建筑表面点。
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| 关 键 词： | 机载Lidar 建筑脚点分割 邻近关系 r半径点密度 |
| 收稿时间： | 2008-05-10 |
| 修稿时间： | 2008-05-10 |
Picking up Footprints of Building from Airborne Lidar Data with Multi-strategies |
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| WANG Ren, XU Qing, ZHU Xinhui. Picking up Footprints of Building from Airborne Lidar Data with Multi-strategies[J]. Geomatics and Information Science of Wuhan University, 2008, 33(7): 688-691. |
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| Authors: | WANG Ren XU Qing ZHU Xinhui |
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| Affiliation: | 1Xi'an Research Institute of Surveying and Mapping,1 Middle Yanta Road,Xi'an 710054,China;2College of Surveying and Mapping,Information Engineering University,66 Middle Longhai Road,Zhengzhou 450052,China |
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| Abstract: | The pro and con of all classic algorithms for picking up building footprints are analyzed.And then an arithmetic with multi-strategies is put forward to pick up the building footprints from airborne Lidar data.A workflow of this arithmetic is given.Aiming at the deficiencies in settling out data classification,a new measure named neighbor relation is put forward and as a result,points on vegetation surface are effectively separated and eliminated from points on building surface.Aiming at the deficiencies in settling out data classification,r-radius point density is introduced and as a result,the way to choose seed points are improved better and the perform efficiency in segmentation is advanced. |
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| Keywords: | airborne Lidar segmentation of building footprint nearby relation r-radius point density |
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