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Method for tracking contour line to boundary and fault based on triangular mesh

A technology of triangles and isolines, applied in the field of computer graphics, to achieve the effect of simplifying logic and perfecting graphic vision

Active Publication Date: 2012-06-13
KARAMAY HONGYOU SOFTWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] To sum up, the existing contour traces the fault, because the grid where the fault passes has been destroyed, the contour can only stop at the grid above the destroyed grid, so that the contour There is a small gap between the line and the fault

Method used

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  • Method for tracking contour line to boundary and fault based on triangular mesh
  • Method for tracking contour line to boundary and fault based on triangular mesh
  • Method for tracking contour line to boundary and fault based on triangular mesh

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Embodiment Construction

[0059] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0060] One of the core ideas of the present invention is to provide a method for tracing contours to boundaries and faults based on triangular meshes, including: establishing a mesh according to the four corners of a rectangular area and the step length of a triangle to obtain a triangular mesh grid frame; all points and virtual points in the triangle grid frame are interpolated to obtain the Z values ​​of all points in the triangle grid frame and the Z values ​​of virtual points; preprocessing in the triangle grid frame The Z values ​​of all points and the Z values ​​of virtual points; obtain the corrected Z values ​​of all points in the triangular grid frame and the corrected Z values ​​of virtual points; The corrected Z value a...

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Abstract

The invention provides a method for tracking a contour line to a boundary and a fault based on a triangular mesh. The method comprises the following steps of: establishing a mesh according to four corners of a rectangular area and a step length of a triangle to obtain a triangular mesh frame; performing interpolation on all points and virtual points in the triangular mesh frame to obtain Z values of all the points and Z values of the virtual points in the triangular mesh frame; preprocessing the Z values of all the points and Z values of the virtual points in the triangular mesh frame to obtain corrected Z values of all the points and corrected Z values of the virtual points in the triangular mesh frame; and tracking the contour line according to the corrected Z values of all the points and corrected Z values of the virtual points in the triangular mesh frame to obtain a result for tracking the contour line. By the method, the contour line can be tracked to the boundary and the fault.

Description

technical field [0001] The invention relates to the field of computer graphics, in particular to a method for tracing contour lines to boundaries and faults based on triangular grids. Background technique [0002] At present, solutions involving GIS (Geographic Information System, geographic information system, GIS is a computer-based tool that can map and analyze things that exist on the earth and events that occur) will involve such a The problem is to find the points with the same elevation value on the established grid (or equal points, which are relative to the plane coordinates x and y, where x, y represent the latitude and longitude or the coordinates defined by the researcher himself. If used for Some other research Z does not necessarily indicate height, such as the temperature of a certain point, the ultraviolet intensity of a certain point), such as drawing contour topographic maps, oil-water boundaries for oil exploration. Generally speaking, the established gri...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/30
Inventor 李伟
Owner KARAMAY HONGYOU SOFTWARE
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