Large-scale three-dimensional scene webpage display method based on model compression and asynchronous loading

A 3D scene and asynchronous loading technology, which is applied in 3D modeling, 3D image processing, instruments, etc., can solve the problems of slow loading and stuttering, and achieve the effect of increasing the loading speed and improving the fluency of user interaction

Active Publication Date: 2019-07-30
NORTHEASTERN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, there are still many problems in the display of large-scale 3D models on the web, such as slow loadi...

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  • Large-scale three-dimensional scene webpage display method based on model compression and asynchronous loading
  • Large-scale three-dimensional scene webpage display method based on model compression and asynchronous loading
  • Large-scale three-dimensional scene webpage display method based on model compression and asynchronous loading

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Embodiment Construction

[0037] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] Such as figure 1 As shown, the method of this embodiment is as follows.

[0039] The present invention provides a large-scale three-dimensional scene web page display method based on model compression and asynchronous loading, including the following steps:

[0040] Step 1: Obtain a 2D picture of the scene to be reconstructed, and use 3D reconstruction technology to generate a 3D model of the scene to be reconstructed;

[0041] Step 2: Divide the point cloud space in the model into small cubes according to the 3D model obtained in step 1, and use the octree to form structured data;

[0042]Step 2.1: Calculate the cube bounding box B that can contain the entire s...

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Abstract

The invention provides a large three-dimensional scene webpage display method based on model compression and asynchronous loading, and relates to the technical field of computer graphics. The method comprises the following steps of 1, obtaining a two-dimensional picture of a scene to be reconstructed, and generating a three-dimensional model of the scene to be reconstructed by utilizing a three-dimensional reconstruction technology; 2, dividing a point cloud space in the model into small cubes according to a three-dimensional model, and forming structured data by using an octree; 3, calculating the node size and depth of the octree model; 4, constructing an octree model; 5, compressing the octree model requested by the user at the server side, and transmitting the compressed octree model to a browser for rendering display through a network; and 6, dynamically loading the nodes of the octree model on the webpage according to the hierarchical detail technology, and rendering the nodes atthe same time to finally obtain the three-dimensional scene graph of the scene to be reconstructed. According to the method, the real-time performance of model rendering in webpage model display is ensured, and the waiting time of a user is greatly shortened.

Description

technical field [0001] The invention relates to the technical field of computer graphics, in particular to a large-scale three-dimensional scene webpage display method based on model compression and asynchronous loading. Background technique [0002] The real world is three-dimensional, and human visual perception is three-dimensional. Compared with text information and two-dimensional images, three-dimensional models are more specific, real, rich, and more realistic and vivid in displaying objects in the real world. At present, there are some commercial software for displaying large-scale 3D models, but they are often expensive and mostly based on client-side development. The use of the client application needs to go through relatively complicated steps such as downloading, installing, and updating. And because the data needs to be stored locally, the requirements for the client are very high when dealing with a large amount of data. At the same time, the problem of data s...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06T15/00
CPCG06T17/005G06T15/00
Inventor 王斌杨晓春王晓阳
Owner NORTHEASTERN UNIV
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