3D real-time rendering method of gis data

Abstract

The invention discloses a three-dimensional real-time rendering method for GIS data. The method mainly solves the problems that in the prior art, when a large volume of GIS space lattice data are used for rendering three-dimensional terrains, the rendering speed is low, and terrain texture data are lacking. The rendering method includes the following steps of setting basic terrain type parameters, extracting space lattice terrain information data, preprocessing the extracted terrain information data, judging the type of the terrain with the terrain information data through the terrain type characteristic judging method or the terrain type fuzzy judging method, rapidly rendering a required data structure according to the three dimensions, organizing three-dimensional terrain data according to the wire frame method, and setting up a traction mechanism. Through the scheme, the aims of being high in rendering speed and convenient to implement are achieved, and the method has high practical value and high popularization value.

Description

technical field [0001] The invention relates to a three-dimensional real-time rendering method of GIS data. Background technique [0002] With the development of computer visualization technology, virtual reality has gradually formed a mainstream application trend. The three-dimensional interactive form gives participants a strong sense of participation and immersion with its intuition, vividness, and authenticity. In 3D virtual applications that require a high degree of simulation, such as: real-scene simulation, virtual training, simulation games, digitalization Resources and other fields have very good practical value. In the fields listed above, 3D terrain rendering is a commonly used technology. In order to increase the authenticity of virtual reality, it is undoubtedly a very direct solution to use terrain data derived from actual GIS sampling data. [0003] In practical applications, there are some practical difficulties in using GIS air-space grid point data for 3D...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a three-dimensional real-time rendering method of GIS data, which mainly solves the problem of slow rendering speed and lack of terrain texture data when the large amount of GIS sky grid point data used in the prior art is used for three-dimensional terrain rendering question

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