Three-dimensional scene construction method and system

A technology of three-dimensional scene and construction method, applied in the field of three-dimensional scene construction, can solve the problems of low rendering efficiency, unclear modularization, and large amount of calculation, and achieve the effect of improving rendering efficiency, clear modularization, and reducing the amount of calculation.

Active Publication Date: 2015-05-06
SHENZHEN TENCENT COMP SYST CO LTD
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AI Technical Summary

Problems solved by technology

A simple and efficient way to organize LOD data is to use a tree structure. Because there is a natural identity between the tree structure and geographic coordinates, the terrain data is very suitable for storage in a tree structure, but the use of a tree structure will also bring There are some problems, such as unclear modularization, large amount of calculation, low rendering efficiency, etc.

Method used

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  • Three-dimensional scene construction method and system
  • Three-dimensional scene construction method and system

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Embodiment Construction

[0026] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, features and effects of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0027] In the embodiment of the present invention, the method for constructing a 3D scene is executed by a system for constructing a 3D scene, and the system for constructing a 3D scene can be carried on a terminal device. Please refer to figure 1 , figure 1 A structural block diagram of a terminal device is shown. Such as figure 1 As shown, the terminal device includes a memory 102, a storage controller 104, one or more (only one is shown in the figure) processors 106, a peripheral interface 108, a radio frequency module 110, a positioning module 112, a camera module 114, and an audio module 116 , a touch screen 118 and a button module 120 . ...

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Abstract

The invention provides three-dimensional scene construction method and system. The three-dimensional scene construction method comprises the steps of traversing nodes of a tree structure when the three-dimensional scene construction system detects that the camera pose is changed; updating the nodes of the tree structure according to the rendering frame rate of the image at the current frame and the camera moving speed; traversing the updated nodes of the tree structure; creating the rendering data of the nodes according to the three-dimensional space data of the nodes of the tree structure; rendering a three-dimensional scene of the image at the current frame according to the constructed rendering data of nodes of the constructed tree structure. According to the three-dimensional scene construction method and system, the construction engineering the three-dimensional scene is modular and clear; the nodes of the tree structure are updated according to the rendering frame rate of the image at the current frame and the moving speed of a camera; therefore, the calculation load in node update can be effectively decreased, and as a result, the rendering efficiency can be increased.

Description

technical field [0001] The invention relates to the technical field of three-dimensional spatial data visualization, in particular to a method and system for constructing a three-dimensional scene based on a tree structure. Background technique [0002] Large-scale three-dimensional map scene dynamic real-time rendering technology has important applications in geographic information systems and virtual reality, such as natural disaster simulation and virtual battlefield drills. With the rapid development of computer graphics hardware technology in recent years, real-time rendering of small-scale 3D scenes can basically be realized now. However, for real-time rendering of large-scale 3D scenes, the situation is much more complicated. Large-scale 3D scenes involve a large amount of 3D spatial data, ranging from hundreds of GB (Gigabyte) to dozens of TB (Terabyte). The scale of data has far exceeded the real-time rendering and memory management capabilities of current computer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T15/00
Inventor 付玉锦
Owner SHENZHEN TENCENT COMP SYST CO LTD
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