Real-time drawing and comparing method for three-dimensional model

A 3D model and real-time rendering technology, applied in the field of model building, can solve problems such as inconsistency in display effects, inappropriate models, and inaccurate matching

Active Publication Date: 2015-05-06
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
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Problems solved by technology

This is conducive to the separation of model builders and program developers, but it also brings problems. First of all, model builders need to clarify all model specifications of osgearth software in advance before they can be imported normally; even if they can be imported normally, they will encounter The display effect is inconsistent with the display in the 3DS MAX software, which requires repeated communication between the programmer and the model builder to solve it, and a lot of time is wasted
[0003] Secondly, the practice of constructing the 3D model in advance and storing it as a har

Method used

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  • Real-time drawing and comparing method for three-dimensional model

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0026] figure 1 It is a flowchart of a three-dimensional model real-time rendering and comparison method of the present invention; the method includes the following steps:

[0027] S1. The plug-in of the modeling software reads the node data of the model in real time from the modeling software;

[0028] S2. The data read in the step S1 is stored in the shared buffer area in the form of nodes, and the nodes are organized in a tree structure;

[0029] S3. The comparison software reads the data of the nodes in the shared buffer area, and draws the initial three-dimensional model in real time in geographic space;

[0030] S4. Put the photo in the real scene in the three-dimensional geographic information space...

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Abstract

The invention discloses a real-time drawing and comparing method for a three-dimensional model. The real-time drawing and comparing method comprises the following steps: S1, reading node data of a model in real time from a modeling software through a plug-in unit of modeling software; S2, storing the data read in the step S1 into a shared buffer region in the form of a node, wherein the node is organized in the form of a tree-shaped structure; S3, reading data of nodes in the shared buffer region through the comparing software, drawing an initial three-dimensional model in a geographic space in real time; S4, putting a picture in a reality scene into the three-dimensional geographic space, comparing the picture with the initial three-dimensional model obtained in the step S3, and correcting the initial model to obtain the three-dimensional model. The method disclosed by the invention is used for reading model data in real time, constructing the three-dimensional model by manually correcting, realizing drawing the three-dimensional model in real time according to the reality scene, and matching the constructed three-dimensional model with the reality scene.

Description

technical field [0001] The invention relates to the technical field of model building, and more specifically to a method for real-time rendering and comparison of three-dimensional models. Background technique [0002] In the existing high-end 3D engines, the real-time drawn models in the scene are built in advance by 3D modeling software and stored as hard disk files. For example, buildings, pipelines, and public transportation facilities are all built in advance and imported uniformly. Go to the osgearth software. This is conducive to the separation of model builders and program developers, but it also brings problems. First of all, model builders need to clarify all model specifications of osgearth software in advance before they can be imported normally; even if they can be imported normally, they will encounter The display effect is inconsistent with the display in the 3DS MAX software, which requires repeated communication between the programmer and the model builder ...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06T19/00G06T1/60
CPCG06T17/05G06T19/20
Inventor 桑新柱邢树军于迅博颜玢玢陈铎王鹏李晨雨苑金辉王葵如余重秀
Owner BEIJING UNIV OF POSTS & TELECOMM
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