A Registration and Compression Method of 3D Mesh Sequence

A technology of three-dimensional grid and compression method, applied in the multimedia field, can solve problems such as poor target grid registration effect, and achieve the effects of removing redundancy, improving compression efficiency, and reducing storage space.

Inactive Publication Date: 2017-02-15
BEIJING UNIV OF TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

But when registering a face grid sequence, because only one grid is selected from the sequence as the reference grid, when the target grid is farther and farther away from the reference grid, the registration of the target grid The effect tends to get worse and worse

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  • A Registration and Compression Method of 3D Mesh Sequence
  • A Registration and Compression Method of 3D Mesh Sequence
  • A Registration and Compression Method of 3D Mesh Sequence

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Embodiment Construction

[0023] The registration and compression method of this three-dimensional grid sequence includes the following steps:

[0024] (1) Register a 3D grid sequence based on video inter-coding;

[0025] (2) Use the open source software 7-Zip to losslessly compress the vertex and patch data of all I frames; compress the vertex data of P frames and B frames by compressing the vertex residual data between adjacent frames, while the P frames and B frames are compressed. The patch data of the frame will be shared with the I frame;

[0026] (3) Use the open source software 7-Zip to decompress the compressed file in step (b), and then rebuild it.

[0027] The invention combines the registration process with the idea of ​​inter-frame coding in the video coding technology, and registers a human face in a more complex way by setting the inter-frame coding structure similar to that in the video inter-frame coding. Grid sequence, so as to obtain better registration effect; after the registrati...

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Abstract

The invention discloses a registering and compression method of a three-dimensional grid sequence. By means of the method, the redundancy of the grid sequence on inter-frame topological information can be effectively removed, the grid sequence compression efficiency can be greatly improved, so that storage space is reduced. The method includes the steps that firstly, the three-dimensional grid sequence is registered based on inter-frame coding of a video; secondly, vertexes and patch data of all I frames are subjected to lossless compression through open source software 7-Zip, and vertex data of P frames and vertex data of B frames are compressed by compressing vertex residual data between adjacent frames, wherein patch data of the P frames and patch data of the B frames can be shared by the I frames; thirdly, a compressed file in the second step is decompressed through the open source software 7-Zip, and then reconstruction is carried out.

Description

technical field [0001] The invention belongs to the technical field of multimedia, and in particular relates to a method for registering and compressing a three-dimensional grid sequence. Background technique [0002] With the rapid development of computer graphics technology, 3D grids have been widely used in computer graphics applications. Therefore, in order to store and transmit 3D mesh data more efficiently, the expression and compression of 3D mesh has become a very important research link. [0003] The data of a 3D mesh can usually consist of the following parts: vertices, edges, patches, and some attribute information such as normal vectors, texture coordinates, and texture colors. The simplest 3D meshes tend to record only vertex and patch data. Usually, the coordinate information of the vertices is called the geometric information of the 3D mesh, and the connection information of the vertices, that is, the patch data, is called the topology information of the 3D ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T9/00G06T17/00
Inventor 施云惠王一山胡永利丁文鹏
Owner BEIJING UNIV OF TECH
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