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3D graphic multi-resolution indication method based on XML and LOD technology

A three-dimensional graphics and multi-resolution technology, applied in the field of electronic information, can solve problems such as reducing data processing and sharing complexity, and achieve the effect of meeting display accuracy requirements and improving efficiency

Inactive Publication Date: 2009-08-05
SUN YAT SEN UNIV
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AI Technical Summary

Problems solved by technology

At present, the diversity of 3D graphics data formats brings certain complexity to the processing, sharing and transmission of these data. Due to the versatility of XML format, if XML is used as the description method of 3D object data model, it is not only convenient for network transmission, but also Reduce the complexity of data processing and sharing

Method used

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  • 3D graphic multi-resolution indication method based on XML and LOD technology
  • 3D graphic multi-resolution indication method based on XML and LOD technology
  • 3D graphic multi-resolution indication method based on XML and LOD technology

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings.

[0012] The inventive concept of the present invention is as follows: firstly, the three-dimensional graphic data is encapsulated into an XML file, and the level of detail decomposition of the graphic data is carried out using LOD technology to form a group of multi-resolution hierarchical models of the graphic, which still use XML as the storage carrier, wherein Graphics data at different levels express graphics at different resolutions. According to the display requirements of the terminal, the graphic data of the corresponding level is extracted from the model with the help of XML query tools, combined with the XSL display template to generate HTML documents, and finally realize the transmission and display of graphics.

[0013] Such as figure 1 As shown, the main steps of the multi-resolution display method for three-dimensional graphics based on XML and LOD includ...

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Abstract

The invention discloses a three-dimensional graph multiresolution display method based on XML and LOD technology. The method mainly includes the following steps: 1) encapsulating three-dimensional graph data by virtue of XML; 2) carrying out LOD decomposition on the three-dimensional graph data; 3) utilizing an XML query facility to extract the data of different LODs from a model according to the requirement of a display terminal and generating an HTML document by combining with an XSL template; and 4) transmitting the generated HTML document to a terminal by network and finally realizing the display of the three-dimensional graph data. Aiming at different display requirements, data transmission can be implemented flexibly by the use of the method, thus improving data transmission efficiency and satisfying the display accuracy requirement of different terminal equipment.

Description

technical field [0001] The invention belongs to the field of electronic information, and in particular relates to a three-dimensional graphic multi-resolution display method based on XML and LOD technology. Background technique [0002] With the continuous deepening of computer graphics research, there are more and more 3D graphics on the Internet, such as 3D terrain, architecture, animation, etc., and the development of the Internet has accelerated their dissemination and sharing. Displayed on various display terminals such as PCs, smart phones, and PDAs. On current search engines and browsing platforms, when large-scale graphics scenes need to be drawn, transmitted, and displayed, it is common practice to use a large number of triangular patches to describe the geometric model in the scene. As the number of triangles describing the scene increases, the quality of the drawn image will become higher and higher, but the drawing speed will also become slower and slower, espec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/00
Inventor 罗笑南齐鹏飞
Owner SUN YAT SEN UNIV
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