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

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...

AI Technical Summary

Problems solved by technology

However, there are still many problems in the display of large-scale 3D models on the web, such as slow loading and freezing. There is a lot of room for improvement in terms of model rendering efficiency and user interaction.

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