Characteristic reservation based three-dimensional model progressive transmission method

Abstract

The present invention relates to a three-dimensional model progression transmission method on basis of keeping character, the present invention holds the improvement for character keeping on the basis of the simplified arithmetic of the original three-dimensional model, and at the same time of simplifying the geometrical model, the present invention keeps the topological property and attribute character of the model, and gets the underlying net with smaller data amount, and on the basis of above, the processing coding is held distributed on basis of octree to construct the procession net document. When in transmission, the octree broadness prior coding underlying net is firstly used, and then adopting the procession net transmission method to transport a serial detail recovering information, and continuousely improving model presicion and recovering the original document, thereby solving the problem that: the responding time for the traditional transmission method is long. In adition, the viewpoint related transmission strategy facing the object is designed for the three-dimensional scene, increasing the actural drawing, and making the visibility judging of the object is carried out by putting on the clinet end, and reducing the loading of the server.

Description

technical field [0001] The present invention relates to the technical field of 3D model simplification, geometric compression coding, and progressive transmission, especially a feature-preserving 3D model progressive transmission method, which can be applied to the processing of various 3D models with complex texture and structural features and web publishing. In addition, it is also applied to the network publishing of precious cultural relics in digital museums. Background technique [0002] In computer graphics, triangular meshes are generally used to describe complex three-dimensional shapes. With the continuous improvement of 3D data capture technology, the amount of grid data will be very large, which brings many difficulties to the storage, transmission and rendering of 3D models. The digital museum contains a large number of 3D models that need to be displayed online. The most basic ones, such as the transmission of a single model exhibit, and the complex ones, suc...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the user wait time is too long

[0004] For the progressive grid method, there have been many methods to improve it. However, most of these methods are for relatively regular geometric models without attributes, and do not involve attribute information such as texture, and do not support 3D scenes.

Images