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Side slope point cloud curved surface reconstruction and deformation information extracting method

A technology for surface reconstruction and information extraction, applied in 3D modeling, details involving processing steps, image data processing, etc.

Inactive Publication Date: 2017-03-15
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology

In 2015, Liu Changjun et al. proposed a precise direct comparison algorithm between point clouds and point clouds based on the octree structure to realize the automatic comparison of multiple point cloud data in the deformed area. The efficiency is reduced, and it is impossible to quickly and efficiently extract the slope point cloud deformation information of complex and large amounts of data

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  • Side slope point cloud curved surface reconstruction and deformation information extracting method
  • Side slope point cloud curved surface reconstruction and deformation information extracting method
  • Side slope point cloud curved surface reconstruction and deformation information extracting method

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Embodiment Construction

[0038] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0039] In the embodiment of the present invention, the slope point cloud surface reconstruction and deformation information extraction method, such as figure 1 shown, including the following steps:

[0040] Step 1. Obtain the 3D point cloud data of the slope through the 3D laser scanner, and measure the center coordinates of each reflector through the total station;

[0041] In the embodiment of the present invention, the location of the station is preliminarily determined according to the terrain conditions; in the embodiment of the present invention, the scanning object is the slope of a tailing in Mentougou, and the environment is relatively complicated; the bottom of the tailing is a relatively stable ground, and the three-dimensional laser scan The instrument is erected on it; in order to ensure the integrity of the data and avoid data overlap, a...

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Abstract

The invention provides a side slope point cloud curved surface reconstruction and deformation information extracting method, which belongs to the field of deformation monitoring. The side slope point cloud curved surface reconstruction and deformation information extracting method adopts an improved RBF algorithm, carries out curved surface modeling on side slope point cloud data subjected to point cloud preprocessing, and improves the RBF algorithm modeling efficiency and precision. For the side slope point cloud information extraction problem, the feasibility of combining Cyclone with CAD for extracting DEM and two methods which are respectively a contouring method and a three-dimensional quality inspection software method are proposed, deformation data extracted by adopting the three-dimensional quality inspection software method is compared with the traditional deformation monitoring data, and the correctness of the method is verified.

Description

technical field [0001] The invention belongs to the field of deformation monitoring, and in particular relates to a slope point cloud surface reconstruction and deformation information extraction method. Background technique [0002] The well-known 3D laser scanning technology, which appeared in the mid-1990s and then developed very rapidly, has advantages unmatched by other traditional slope deformation monitoring methods; 3D laser scanning technology can obtain high-density and high-precision 3D point cloud data Efficient and fast, it is very helpful to study the monitoring results and grasp the deformation rules. Among the related technologies of 3D laser scanning applied to slope deformation monitoring, the surface reconstruction technology of scattered point cloud of slope and the selection of deformation information extraction method of point cloud of slope are the key points. [0003] In 1971, Hardy used the MQ basis function to construct and fit the surface in the s...

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Application Information

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IPC IPC(8): G06T17/05
CPCG06T17/05G06T2200/08Y02A90/10
Inventor 杨帆邵阳常俊飞李龙飞
Owner LIAONING TECHNICAL UNIVERSITY
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