Organization method of a mass three-dimensional model

Abstract

The invention discloses an organization method of a mass three-dimensional model, which relates to the technology of displaying virtual reality on a display screen, and is characterized by comprisingthe following steps of: partitioning the spatial range of model data; performing hierarchical processing on the model data; performing hierarchical simplification on model data; recombining and outputting node model data, traversing topological triangles in the simplified topological triangle set under the nodes, outputting texture images, and establishing a topological structure for the model data; evaluating deletion errors of all topological vertexes; executing a topological vertex deletion operation and processing the texture offset; obtaining a topological triangle set of all the nodes; grouping and outputting the triangular data according to the referenced texture image; and outputting and setting association relationships according to the upper and lower layer relationships of the nodes. The method has the advantages that urban three-dimensional model data are optimized and organized, and the real-time visualization efficiency of the urban three-dimensional model data is improved.

Description

technical field [0001] The present invention relates to displaying virtual reality technology on a display screen, in particular to a construction of a spatial index structure of massive three-dimensional model data of cities, and automatic multi-detail level simplification of three-dimensional model data of cities. The organization method of massive 3D models is optimized and organized, which improves the dynamic scheduling efficiency of urban 3D model data in the network environment, and improves the efficiency of real-time visualization of urban 3D model data. Background technique [0002] Geographic Information System (Geographic Information System or Geo-Information system, GIS) is sometimes called "geoscience information technology" or "resource and environmental information technology". It is a specific and very important spatial information technology. It is a technical method to collect, store, manage, calculate, analyze, display and describe the relevant geographi...

AI Technical Summary

Problems solved by technology

The texture image referenced by the triangular faces of the model data is extracted from the color value of the corresponding area through the texture coordinates and saved in the topological triangle structure in the form of a matrix, which solves the problem that the texture coordinates cannot be used when performing deletion operations on triangular faces that refer to different textures during the model simplification process to represent issues with referenced image regions

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