Data rendering method of massive 3D geological structure model

Abstract

The invention provides a drawing method for massive data of a three-dimensional geological structure model. The method comprises the steps: A, full-scene model data organization, wherein a grid framework and a corresponding progressive grid simplification sequence of any geological monomer in the three-dimensional geological structure model are located through an R-Octree double-layer index; B, model data scheduling, wherein grid framework data and corresponding simplification sequence data are scheduled to an internal memory from an external memory through a grid frame scheduler and a grid simplification sequence scheduler; C, data drawing, wherein when the grid framework data and the simplification sequence data change, the grid framework data and the simplification sequence data of any geological monomer are drawn, and the drawing result is displayed in a three-dimensional scene. According to the drawing method for the massive data of the three-dimensional geological structure model, drawing and display of the data, which can not be processed because the size exceeds the internal memory of a computer, of the geological structure model in the prior art can be achieved.

Description

technical field [0001] The invention relates to the field of three-dimensional geological modeling and visualization, in particular to a method for drawing massive three-dimensional geological structure model data. Background technique [0002] The 3D geological structure model is seamlessly joined together by multiple geological bodies, and each geological body is closed into a complete geometric surface by an irregular triangular network. [0003] In the process of visualization of geological multivariate data, it is often necessary to efficiently display real-time and efficient structural models of different themes, such as 3D bedrock in the field of urban geology and geological structure models of the Cenozoic in the same scene. For a structural model of a research area, there may be tens of thousands of geological bodies, and each geological body is composed of tens of thousands or even hundreds of thousands of triangles. Moreover, the data volume of the 3D structural ...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the existing rendering technology cannot directly realize the visualization of massive 3D geological structure models. Part of the data is often read in from the external storage and unloaded after rendering. This often leads to low rendering efficiency and slow display speed, and it is impossible to view and browse the model in real time. The overall structure of the structure, and it is impossible to realize the 3D interaction of massive 3D geological structure models, such as rotation, selection and other common 3D visualization operation functions

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