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Compression method suitable for three-dimensional grid sequence

A technology of three-dimensional grid and compression method, which is applied in image data processing, instrumentation, computing, etc., and can solve the problems of inability to achieve compression efficiency, geometric image sequences that cannot effectively maintain the geometric correlation of three-dimensional grid sequences, and different topological connection relationships, etc. question

Inactive Publication Date: 2015-11-18
BEIJING UNIV OF TECH
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Problems solved by technology

However, due to the different topological connections of each frame of the heterogeneous 3D mesh sequence, the generated geometric image sequence cannot effectively maintain the geometric correlation that the 3D mesh sequence should have, resulting in the overall compression not achieving the ideal compression efficiency.

Method used

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  • Compression method suitable for three-dimensional grid sequence
  • Compression method suitable for three-dimensional grid sequence
  • Compression method suitable for three-dimensional grid sequence

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Embodiment Construction

[0014] This compression method is suitable for 3D mesh sequences, the method includes the following steps:

[0015] (1) Use the thin plate spline function TPS to perform non-rigid registration on the geometric image sequence. The geometric image sequence is a known three-dimensional grid sequence generated by parameterization and resampling;

[0016] (2) Using the image compression algorithm JPEG2000 to compress the residuals between the frames of the geometric image sequence registered in step (1).

[0017] Since the 3D mesh sequence is a dynamic sequence that changes in time order, although the topological connections of each frame are different, the subjective difference between adjacent frames of the original 3D mesh sequence is not obvious, and the geometry generated after parameterization and resampling In the image sequence, there will be a large difference between adjacent frames. Therefore, the geometric image sequence is registered through the thin plate spline funct...

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Abstract

The invention discloses a compression method suitable for a three-dimensional grid sequence, is suitable for compressing the three-dimensional grid sequence and improves the compression efficiency of the isomeric three-dimensional grid sequence, wherein each frame of the three-dimensional grid sequence has different topologic connection relationships. The method comprises the following steps: (1) utilizing a thin-plate spline (TPS) to carry out non-rigid registration on a geometry image sequence, wherein the geometry image sequence is generated in a way that a known three-dimensional grid sequence is subjected to parameterization and resampling; and (2) using an image compression algorithm JPEG (Joint Photographic Experts Group) 2000 to compress a residual error between every two frames of the geometry image sequence registered in the step (1).

Description

technical field [0001] The invention belongs to the technical field of data compression, and in particular relates to a compression method suitable for three-dimensional grid sequences. Background technique [0002] With the rapid development of computer graphics and 3D scanning technology, 3D grids have been widely used in various fields such as computer graphics and computer vision. In recent years, the size and complexity of 3D grid data has gradually increased. How to compress efficiently to reasonably save network bandwidth and reduce the storage space of 3D data during data transmission has become an important and popular topic in the field of 3D data research. [0003] Most of the previous studies exploit the spatial correlation of the grid topology to compress static single 3D grids. However, for dynamic 3D grid sequences, if we just apply static grid compression algorithm for frame-by-frame compression without considering their temporal correlation, we can only get...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T9/00
Inventor 尹宝才高原施云惠丁文鹏王少帆
Owner BEIJING UNIV OF TECH
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