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A flow to generate DEM from Lidar data
Lai Xudong 1 * #,Zheng Xuedong 2,Jiang Junwei 3
1.School of Remote Sensing and Information Engineering
2.Yangtze River Scientific Research Institute, Spatial Information Technology Application Monograph
3.China railway siyuan survey and design group co., ltd
*Correspondence author
#Submitted by
Subject:
Funding: 教育部博士点基金,国家863项目（No.20060486041,2006AA122101）
Opened online: 1 July 2009
Accepted by: none
Citation: Lai Xudong,Zheng Xuedong,Jiang Junwei.A flow to generate DEM from Lidar data[OL]. [ 1 July 2009] http://en.paper.edu.cn/en_releasepaper/content/33552
 
 
To consume less time and less memory, this paper presents a flow to generate DEM from Lidar data. Firstly the flow labels non-ground points based on multi-echo information. Secondly by the relativity among neighbor points, the flow labels many other non-ground points. After these two up-to-down steps, many non-ground points have been eliminated, which has reduced the amount of the Lidar points successful. At last, the flow use filtering arithmetic based on scan lines to get DEM. This paper comes to a conclusion that both the flow and algorithm are feasible by using them to disposing laboratory data.
Keywords:Lidar;Filter;DEM;flow
 
 
 

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