Method and device used for progressive transmission of three-dimensional scene models

A technology of 3D scene and transmission method, which is applied in the field of large-scale 3D scene model transmission, method and software system, and can solve the problem of optimization granularity too fine

Inactive Publication Date: 2010-10-06
吕伟伟 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this optimization is too fine-grained during viewpoint-dependent large-scale scene rendering and transfer.

Method used

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  • Method and device used for progressive transmission of three-dimensional scene models
  • Method and device used for progressive transmission of three-dimensional scene models
  • Method and device used for progressive transmission of three-dimensional scene models

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Embodiment Construction

[0023] Hereinafter, the implementation process of the method and device according to the present invention will be described in detail with reference to the accompanying drawings.

[0024] First introduce several basic facts in the network transmission of large-scale 3D scenes:

[0025] One of the facts is that under the current network conditions, most of the transmission of 3D scene models (for example, model transmission in 3D online games) is carried out in conventional networks (for example, the Internet), and only a few high-end applications are Realized based on dedicated high-speed network. The main bottleneck of 3D model transmission is the delay caused by the network speed, and the traditional single-resolution transmission method needs to download all the data of the model to the client before displaying it, causing users to wait for too long.

[0026] Aiming at this situation, the present invention proposes a progressive transmission measurement, that is, first tr...

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Abstract

The invention discloses a method used for progressive transmission of three-dimensional scene models. The method comprises an object level transmission strategy and a point-plane level transmission strategy, wherein in the object level transmission strategy, a scene is divided into mutually independent blocks according to a spatial position relation and object properties of the scene; and in the point-plane level transmission strategy, for each block, model simplification is adopted to simplify each block, and information on points deleted in the simplifying process is recorded to form a progressive mesh format.

Description

technical field [0001] The present invention generally relates to data transmission technology, and more specifically relates to a method and software system for transmitting a large-scale three-dimensional scene model on a network using a multi-level progressive strategy. Background technique [0002] With the improvement of model acquisition methods, 3D mesh models are becoming more and more refined, and the amount of data is increasing rapidly. Large-scale 3D scenes have higher requirements for real-time rendering and network transmission. In the process of real-time 3D scene rendering, in order to improve the rendering efficiency of complex scenes, a multi-resolution method is generally used to represent the model in the scene. The traditional multi-resolution method is called a discrete level-of-detail model (Level-of-Detail, abbreviated as LOD), that is, multiple different levels of detail models are generated for the same model. When it is necessary to represent a 3D ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H04L29/08H04L29/06H04L12/24
Inventor吕伟伟王秀玲
Owner吕伟伟