Real-time refining three-dimensional modeling and rendering method for massive road networks

Abstract

The invention provides a real-time refining three-dimensional modeling and rendering method for massive road networks. The method comprises the following steps: (S1) constructing a road network three-dimensional submodel database, a model attribute database, a three-dimensional terrain model database and a three-dimensional terrain paging database; (S2) calculating a laying length, space coordinates and a space attitude of the road network three-dimensional submodel database, so as to obtain precise submodel three-dimensional preset information; (S3) presetting three-dimensional subnode models in a three-dimensional terrain model along a road network vector route according to the precise submodel three-dimensional preset information and an attribute character value of each section of road network model; (S4) regulating three-dimensional space attitude of a road network three-dimensional submodel; (S5) carrying out real-time binding on the regulated road network three-dimensional submodel to obtain massive road network models; and (S6) optimizing and rendering massive road network three-dimensional models. By virtue of the method, a professional modeling worker and a large-scale scene designer can assist to rapidly construct massive road network three-dimensional models.

Description

technical field [0001] The invention relates to the technical field of three-dimensional visualization simulation, in particular to a method for real-time refined three-dimensional modeling and rendering of massive road networks. Background technique [0002] With the popularization and application of big data technology, digital earth and three-dimensional visualization of large-scale and large-scale terrain have become one of the basic components of big data applications. With the development of virtual reality hardware technology, the display accuracy of three-dimensional large-scale terrain is getting higher and higher, including vegetation, buildings and road networks. [0003] With the in-depth application of big data visualization technology in traffic design, road planning and other fields, it has become a new technology development trend to carry out refined 3D modeling of railways, highways and traffic entities. At present, there are also virtual 3D urban roads, vi...

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Problems solved by technology

[0004] The purpose of the present invention is to address the deficiencies of the prior art, to provide a real-time refined three-dimensional modeling and rendering method for massive road networks, which can well solve the problem of time-consuming and labor-intensive manual construction of the existing three-dimensional model, which cannot be achieved fine-grained display problems

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