Three-dimensional model image generating method and apparatus

Abstract

The invention provides a pattern generation method for a three-dimensional model, which comprises the following steps: original precise three-dimensional model data is obtained, and the three-dimensional model data comprises polygon mesh vertex data which indicates a three-dimensional object; the three-dimensional model data is compressed, and redundant data of the three-dimensional model is reduced; a user request is received, the compressed three-dimensional model data is downloaded, and a three-dimensional model pattern is generated through rendering. Through the pattern generation method, the model complexity is reduced, the number of the polygons which need to be processed in an image system is reduced, the data size which needs to be transmitted is reduced, more particularly, the data size which is needed for the pattern generation in a rendering manner is reduced, the rendering speed is increased, and the real-time rendering request of the user can be satisfied. A pattern generation device for the three-dimensional model is also provided.

Description

technical field [0001] The invention relates to the field of data processing, in particular to a method and device for generating three-dimensional model graphics. Background technique [0002] Geographic Information System (GIS) is a computer system for collecting, storing, managing, processing, retrieving, analyzing and expressing geographic spatial data. It is a general technology for analyzing and processing massive geographic data and a system for processing geographic information. . Geographical information refers to information directly or indirectly related to the spatial position on the earth, also known as spatial information. [0003] With the advancement of science and technology and the improvement of data processing capabilities, the geographical scope of GIS systems is gradually expanding, from the city level to the national scope, and even to the global scope. As the geographic scope expands, the data involved also increases. The management and application...

AI Technical Summary

Problems solved by technology

Compared with ordinary 3D applications, the data scale of 3D architectural environment is larger, the data types are more diverse, and the graphic data of the scene is more complex, which brings more difficulties to data management and scene description. Massive 3D spatial data has become the main factor hindering the application

In the 3D GIS engine, the real-time requirements for browsing are very high. If you directly download and use unprocessed raw data, the rendering speed will be unacceptable

Even using 3D hardware devices to increase the rendering speed cannot solve the speed bottleneck when reading data, and greatly increases the economic burden

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