Geological surface three-dimensional reconstruction method based on sparse profile geological contours

A technology of 3D reconstruction and contour lines, which is applied in 3D modeling, image data processing, instruments, etc., to achieve high efficiency, simple calculation, and the effect of solving the problem of excessive grid size.

Active Publication Date: 2017-03-22
CHENGDU XIMENG TEKE TECH DEV CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for three-dimensional reconstruction of geological surface based on sp

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  • Geological surface three-dimensional reconstruction method based on sparse profile geological contours
  • Geological surface three-dimensional reconstruction method based on sparse profile geological contours
  • Geological surface three-dimensional reconstruction method based on sparse profile geological contours

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[0030] The basic idea of ​​the present invention is: firstly sample the contour line of the geological layer on a certain section, obtain the sampling points on the contour line, and ensure that the number of sampling points on the contour line belonging to the same geological layer on each section is consistent at the same time, construct a corresponding Then, linear interpolation is performed on each corresponding point set to construct interlayer interpolation points; finally, three-dimensional reconstruction is carried out, and the reconstruction method is to connect adjacent sampling points and adjacent corresponding points with straight line segments, which are divided into Triangles, quadrilaterals and n (n is greater than or equal to 3 and n is not equal to 4) are deformed, and quadrilaterals are divided into triangular networks according to the principle of the shortest diagonal. For n>4 n-gons, the adjacent sampling point connections are used The midpoint is connected...

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Abstract

The invention discloses a geological surface three-dimensional reconstruction method based on sparse profile geological contours. The method comprises the following steps: S1) calculating the lengths of the geological contours: calculating the overall length of each geological layer contour on each profile; S2) calculating the sampling points: sampling the points of all contours belonging to the same geological layer; S3) constructing corresponding point sets: determining corresponding points for all contours belonging to the same geological layer in an order to obtain the corresponding matrix for each geological layer; S4) conducting interpolation to the corresponding point sets among the layers: conducting linear interpolation to the corresponding point matrixes on all contours belonging to the same geological layer; S5) performing three-dimensional construction: connecting the connection line for the adjacent points of each corresponding matrix; and performing classification and construction according to the constructed multiple deformation conditions. The method of the invention solves the problem that in the prior art, the three-dimensional construction method does not consider the specialty of geological prospecting data, which causes problems with large numbers of long triangles, triangular facets self-intersecting, and non-manifold.

Description

technical field [0001] The invention relates to a three-dimensional reconstruction technology of a geological surface based on sparse section geological contour lines. Background technique [0002] There are many existing 3D reconstruction methods based on profile data, but when used for 3D reconstruction of geological surfaces with sparse profile geological contours, the performance is not ideal, and there will be a large number of long triangles, self-intersection and non-manifold problems. The main reason is that the particularity of geological profile data collection, such as too long profile distance, complex and changeable geological strata, resulting in poor effect of reconstructed geological plane, thus affecting the accuracy and precision of geological plane reconstruction, thus affecting Accuracy and reliability of subsequent 3D reconstructions of geological models. Therefore, how to solve the accuracy and precision of geological surface 3D reconstruction of spars...

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Application Information

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IPC IPC(8): G06T17/05G06T17/30
CPCG06T17/05G06T17/30
Inventor 赵涵方黎勇
Owner CHENGDU XIMENG TEKE TECH DEV CO LTD
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