Method for processing curved surface extension data in three-dimensional geological surface model

A technology of surface extension and surface model, applied in the field of geographic information system, can solve the problems of low accuracy, poor standardization of patch units, and inability to quantify geological structure research, and achieve the effect of improving standardization, accuracy and quality.
CN105894580AInactive Publication Date: 2016-08-24ZHEJIANG UNIV CITY COLLEGE
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV CITY COLLEGE
Publication Date
2016-08-24
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a method for processing data in a three-dimensional geological surface model. The method includes the step of finding out a set of all boundary lines and a set of all boundary triangles in a stratum surface triangular mesh, selecting the boundary lines which belong to one boundary triangle of the set of all boundary triangles in the set of all boundary lines one by one, determining the extension starting point according to the two end points of each boundary line, determining the extension step according to the boundary triangle, determining the extension direction of a curved surface according to the direction of the boundary line, the step and the normal direction of the boundary triangle, calculating the terminal point according to the starting point, the step and the extension direction of the curved surface, adding the terminal point to a point set in the three-dimensional geological surface model, and generating a topological triangular mesh by conducting two-dimensional Delaunay triangle dissection for the point set to recover the stratum shape. The quality of surface sheet unit generated is improved, and the standard and precision of the surface sheet unit are improved. The method facilitates quantified research of geological structures.
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Description

technical field

[0001] This application relates to the field of geographic information systems, in particular to a data processing method in a three-dimensional geological surface model. Background technique

[0002] When processing data in the existing 3D geological surface model in the geographic information system, the focus of the research is on the simulation of the geological structure, that is, the rendering and visualization of the geological structure.

[0003] In the process of implementing the prior art, the inventors found that at least the following problems existed in the prior art:

[0004] The mesh unit in the 3D geological surface model constructed by the geographic information system has poor standardization and low precision, so it is impossible to carry out quantitative research on the geological structure. For example, research on cracks, faults, etc. in geological structures based on a three-dimensional geological surface model. Contents of the inven...

Claims

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