Characteristic reservation based three-dimensional model progressive transmission method

A technology of three-dimensional model and transmission method, which is applied in pulse modulation TV signal transmission, 3D modeling, image data processing, etc., can solve the problems of long waiting time for users and does not support three-dimensional scenes, and achieves a large scope of application and practicality. Effect
CN100566414CInactive Publication Date: 2009-12-02BEIHANG UNIV
3 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN Ā· China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2009-12-02
Estimated Expiration
Not applicable Ā· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A progressive transmission method of 3D models based on feature preservation, which improves the feature preservation on the basis of the original 3D model simplification algorithm. While simplifying the geometric model, it maintains the topological properties and attribute characteristics of the model, and obtains a relatively large amount of data. A small base grid; and on this basis, the compression coding based on octree division is implemented to construct a progressive grid file. When transmitting, first use the octree breadth to first traverse the decoding base grid, and then use the progressive grid transmission method to transmit a series of detail restoration information, continuously improve the model accuracy, and restore the original model, thus solving the problem of response time of traditional transmission methods long question. In addition, an object-oriented viewpoint-related transmission strategy is designed for the 3D scene, which accelerates the real-time rendering of the scene, and puts the object visibility judgment on the client side, reducing the server load.
Need to check novelty before this filing date? Find Prior Art

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More