Slicing 3D laser point cloud method for volume caloulation of irregular object

被引：0
|
作者：
Li B. [1 ,2 ]
Wei J. [1 ]
Ma B. [1 ]
Wang L. [1 ]
Xu M. [3 ]
机构：
[1] School of Geology Engineering and Geomatics, Chang'an University, Xi'an
[2] Key Laboratory of Western China Mineral Resources and Geological Engineering, Ministry of Education, Xi'an
[3] Shaanxi Institute of Technology, Xi'an
来源：
Cehui Xuebao/Acta Geodaetica et Cartographica Sinica | 2019年 / 48卷 / 01期
关键词：
Amplification effect; Bidirectional latest search; Contour polygon; Point cloud slicing method; Point cloud volume calculation; Shape distortion; Three-dimensional laser scanner;
D O I：
10.11947/j.AGCS.2019.20180028
中图分类号：
学科分类号：
摘要：
Volume parameter is the basic content of a spatial body object morphology analysis. However, the challenge lies in the volume calculation of irregular objects. The point cloud slicing method proposed in this study effectively works in calculating the volume of the point cloud of the spatial object obtained through three-dimensional laser scanner (3DLS). In this method, a uniformly spaced sequent slicing process is first conducted in a specific direction on the point cloud of the spatial object obtained through 3DLS. A series of discrete point cloud slices corresponding to the point cloud bodies are then obtained. Subsequently, the outline boundary polygon of the point cloud slicing is searched one by one in accordance with the slicing sequence and areas of the polygon. The point cloud slice is also calculated. Finally, the individual point cloud section volume is calculated through the slicing areas and the adjacent slicing gap. Thus, the total volume of the scanned spatial object can be calculated by summing up the individual volumes. According to the results and analysis of the calculated examples, the slice-based volume-calculating method for the point cloud of irregular objects obtained through 3DLS is correct, concise in process, reliable in results, efficient in calculation methods, and controllable in accuracy. This method comes as a good solution to the volume calculation of irregular objects. © 2019, Surveying and Mapping Press. All right reserved.
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页码：42 / 52
页数：10
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