Gradual indication method facing interactive movable three-dimension graphics

A technology of three-dimensional graphics and display methods, which is applied in the generation of 2D images, image data processing, instruments, etc., can solve problems such as image deformation and distortion, and achieve the effect of overcoming the small memory of the client

Inactive Publication Date: 2009-05-13
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Remote rendering is image-based rendering, which is very suitable for mobile computing terminals, but when users interact to observe other parts of the 3D scene, distortion caused by image deformation is inevitable

Method used

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  • Gradual indication method facing interactive movable three-dimension graphics
  • Gradual indication method facing interactive movable three-dimension graphics
  • Gradual indication method facing interactive movable three-dimension graphics

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] The file structure of a commonly used 3D model includes a list of vertices and a list of faces. During graph simplification, some vertices will be removed. In order to obtain a new general simplified model file, the retained vertices need to be rearranged, that is, to re-establish the sequenced index values. When rearranging vertices, use such as figure 1 The "shrinkage" shown and how the index is updated.

[0034] Therefore, the index values ​​of the retained vertices are changed after simplification compared to before simplification. In this method, when the model M i is simplified to M i+1 And generate the detail file detail i+1 When, the details file detail i+1 These reserved vertices need to be saved in M ​​for reconstruction i The original index value in . In addition, the 3D coordinate information of the removed vertices must also be saved in ...

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Abstract

The invention discloses a progressive display method for interactive mobile 3D graphics. In the method, a C/S architecture is adopted, and a detail file structure designed for realizing efficiently reconstructing the 3D graphics at a mobile computing terminal is adopted at the same time. The method comprises the following steps: 1. a server progressively simplifies and saves details of the 3D graphics; 2. a simplified basic mesh model and a series of detail files are progressively transmitted to a mobile client side; and 3. the mobile client side reads the basic mesh model and the series of the detail files for progressive reconstruction which specifically comprises vertex list reconstruction and face list reconstruction. The method can help efficiently realize progressive display of the interactive mobile 3D graphics, and is very suitable for mobile terminals with small memory and relatively poor computing capacity.

Description

technical field [0001] The invention belongs to the field of computer graphics data processing, in particular to a progressive display method for interactive moving three-dimensional graphics. Background technique [0002] In recent years, wireless networks, mobile computer technology, and digital home technology have made great progress, and more and more new applications based on mobile computing technology have emerged, including mobile 3D navigation, mobile product display, data visualization, and handheld games. More and more interactive mobile 3D graphics applications, etc. On the one hand, people have higher and higher requirements for real-time interactive manipulation of 3D graphics; on the other hand, mobile computing terminals such as PDAs and mobile phones have relatively low computing power and memory capacity, small display screens, and limited battery power. The ability to interactively display high-precision 3D graphics on mobile computer terminals. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/00
Inventor 罗笑南林谋广邝务枝
Owner SUN YAT SEN UNIV
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