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Rock core shape-preserving three-dimensional reconstruction method

A 3D reconstruction and core technology, applied in the field of 3D reconstruction, can solve the problems of difficulty in maintaining the original characteristics of the core, large investment in personnel and equipment, etc., and achieve the effect of maintaining the original state, high degree of automation, and low cost

Inactive Publication Date: 2014-09-24
CENT SOUTH UNIV
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Problems solved by technology

Since this method is carried out after the core has been transported, cut, liquid washed, etc., it is difficult to maintain the original characteristics of the core, and this method requires a large investment in personnel and equipment, so it is not suitable for rapid characterization of the core on site

Method used

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  • Rock core shape-preserving three-dimensional reconstruction method
  • Rock core shape-preserving three-dimensional reconstruction method
  • Rock core shape-preserving three-dimensional reconstruction method

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Embodiment Construction

[0014] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] A shape-conforming three-dimensional reconstruction method of rock core, which obtains the holographic image information of the rock core shape through multi-angle shooting by a calibrated measurement camera, and then scans and analyzes the image with the help of a high-performance computer according to dense surface modeling technology, and then Obtain the high-density point cloud of the core surface, complete the meshing and automatic filling of the core surface through effective screening of the point cloud, and complete the 3D reconstruction of the core. The specific steps are as follows: The following steps are included: Step 1: Select the required The reconstructed core body is placed in a horizontal position; the second step: using a calibrated measurement camera, taking the core as the center, changing the shooting position along...

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Abstract

The invention relates to a rock core shape-preserving three-dimensional reconstruction method. The method comprises the steps that holographic image information of the contour of a rock core is obtained through multi-angle shooting of a calibrated measurement camera, and then a high-density point cloud on the surface of the rock core is obtained by means of scanning analysis of a high-performance computer on images according to the dense curve modeling technology; gridding and automatic filling of the surface of the rock core are completed through effective determination of the point cloud, and therefore the three-dimensional reconstruction of the rock core is completed. Compared with a traditional rock core characterization method, a large amount of three-dimensional information of the rock core with the original shape can be obtained instantly, no rock core shape selectivity exists, no special handling is needed, the original shape of the rock core can be well kept, the cost is low, operation is convenient and fast, the degree of automation is high, on-site quantitative analysis can be carried out on a coring site, the defects of existing methods are effectively overcome, and the rock core shape-preserving three-dimensional reconstruction method is efficient, fast, low in cost, accurate and reliable.

Description

technical field [0001] The invention relates to a shape-conserving three-dimensional reconstruction method for rock cores, in particular to a three-dimensional reconstruction method mainly used for characterizing original rock cores in exploration work in the fields of geology, oil and gas, engineering, non-ferrous metals, and coal. Background technique [0002] Cores are samples that characterize formations at different depths below the ground or at different positions at the same depth. They are the main research objects of geological surveys, oil and gas exploration, mineral exploration, and engineering exploration. Therefore, it is extremely important to characterize undisturbed cores. The existing characterization methods mainly adopt the method of on-site core recording and later core scanning. [0003] On-site rock core cataloging is mainly to qualitatively describe and record the geometric shape, particle size, mineral type, fracture type, sample color, etc. of the c...

Claims

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Application Information

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IPC IPC(8): G06T17/00
Inventor 曹函孙平贺张绍和
Owner CENT SOUTH UNIV
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