| Technology and Methodology |
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Filtering of Airborne LiDAR Data for Cityscapes Based on Segmentation |
| CHENG Xiao-qian1, FAN Liang-xin1, ZHAO Hong-qiang2 |
1. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454003, China;
2. Zhengzhou Urban Planning Design and Survey Research Institute, Zhengzhou 450052, China |
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Abstract For the purpose of obtaining high precision DEM, this paper proposes a filtering algorithm of LiDAR data based on segmentation. Firstly, the data are divided into several segments and reliable seeds are selected according to edge detection, and then the ground is obtained by a certain growing rule. In order to test the filtering algorithms, the authors made experiments on several urban areas with different characteristics, and then analyzed the results qualitatively and quantitatively. The results show that the filtering method can effectively extract ground points from point cloud with high stability.
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| Keywords
remote sensing
linear and circular structure
alteration anomaly
favorable mineral prospecting section
Luchun in Yunnan
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Issue Date: 20 August 2012
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[1] 王明华,张小红,曾涛,等.机载LiDAR数据滤波预处理方法研究[J].武汉大学学报:信息科学版,2010,35(2):224-227. Wang M H,Zhang X H,Zeng T,et al.Preprocessing Algorithms for Filtering Airborne LiDAR Data[J].Geomatics and Information Science of Wuhan University,2010,35(2):224-227(in Chinese with English Abstract).
[2] 郑金水.LIDAR技术及其应用[J].科技信息,2007(6): 28-29. Zheng J S.LIDAR Technology and Its Application[J].Science Information,2007(6):28-29(in Chinese with English Abstract).
[3] Sithole G,Vosselman G.ISPRS Comparison of Filters[R].Netherlands:Delft University of Technology,2003.
[4] 贾永红.数字图像处理[M].武汉:武汉大学出版社,2003. Jia Y H.Digital Image Processing[M].Wuhan:Wuhan University Press,2003(in Chinese).
[5] 蒋晶珏,张祖勋,明英.复杂城市环境的机载LiDAR点云滤波[J].武汉大学学报:信息科学版,2007,5(32);402-405. Jiang J J,Zhang Z X,Ming Y.Filtering of LiDAR Point Clouds for Complex Cityscapes[J].Geomatics and Information Science of Wuhan University,2007,5(32):402-405(in Chinese with English Abstract).
[6] Sithole G.Segmentation and Classification of Airborne Laser Scanner Data[D].Netherlands:Delft University of Technology,2005.
[7] 徐前祥,廖明生,杨建思.基于距离限制的机载激光数据滤波方法[J].武汉大学学报:信息科学版,2007,32(7):605-608. Xu Q X,Liao M S,Yang J S.Distance-limited Filter for Extracting Ground Points[J].Geomatics and Information Science of Wuhan University,2007,32(7):605-608(in Chinese with English Abstract).
[8] Sithole G,Vosselman G.Experimental Comparison of Filter Algorithms for Bare-earth Extraction from Airborne Laser Scanning Point Clouds[J].ISPRS Journal of Photogrammetry and Remote Sensing,2004,59(1/2):85-101. |
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2012,
Vol. 24
