A method and apparatus for texture mapping of a three-dimensional building model

Abstract

A method and apparatus for texture mapping of a three-dimensional building model are provide. in this method, At first, that three-dimensional build model and the triangular network model are registered, and then the texture rendering primitive corresponding to the three-dimensional building model is obtained through layered processing, and the texture rendering primitive is converted into two-dimensional coordinates, then texture information is extracted from the triangulation model, and then the texture information is mapped to the texture rendering primitive of the three-dimensional building model by using the two-dimensional coordinates, so as to realize the texture mapping of the three-dimensional building model, in this process, more accurate texture information can be obtained fromthe triangulation model; the texture rendering primitive obtained by layering the surface elements of the 3D building model can avoid the problem of poor texture mapping effect caused by the occlusionbetween the layers, so the method can significantly improve the automation degree and accuracy of texture mapping of the fine 3D building model, and can meet the higher requirements.

Description

technical field [0001] The present application relates to the technical field of geographic information systems, in particular to a method and device for texture mapping of a three-dimensional building model. Background technique [0002] A smart city is built on the basis of visualization and measurability. Through the application of a new generation of IT technology, it integrates the Internet of Things composed of various sensors, is oriented to applications and services, and is centered on data. A networked city information management and decision support platform that provides information. In order to support the needs of smart cities, refined 3D urban reconstruction oriented to 3D GIS is an important basic work. [0003] In the process of 3D urban reconstruction, the 3D architectural model is a very critical factor. However, in actual work, the texture mapping of the 3D architectural model relies heavily on manual interactive processing, which is inefficient and diffi...

AI Technical Summary

Problems solved by technology

[0003] In the process of 3D urban reconstruction, the 3D architectural model is a very critical factor. However, in actual work, the texture mapping of the 3D architectural model relies heavily on manual interactive processing, which is inefficient and difficult to guarantee the quality of the results. Therefore, the improvement of the 3D architectural model The degree of automation and accuracy of texture mapping is an urgent problem to be solved and optimized

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