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Three-dimensional seismic body vector quantization compression body rendering method

A quantitative compression, three-dimensional seismic technology, applied in seismic signal processing and other directions, can solve the problems of low compression ratio and small homogeneous area, achieve high compression ratio, reduce compression loss, and facilitate data compression.

Inactive Publication Date: 2014-01-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

The existing methods have a low compression rate when solving seismic data volume rendering with small homogeneous regions and scattered numerical distribution.

Method used

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  • Three-dimensional seismic body vector quantization compression body rendering method
  • Three-dimensional seismic body vector quantization compression body rendering method
  • Three-dimensional seismic body vector quantization compression body rendering method

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Embodiment Construction

[0040] The overall process of this method is as follows figure 2 As shown, it mainly includes: data preprocessing, vector quantization, decompression drawing.

[0041] The present invention combines the horizon features in the seismic data features (such as image 3 with Figure 4 As shown), constraining the amount of original data to be compressed, a hierarchical classification and hierarchical vector quantization algorithm is proposed. This method can concentrate the data to be compressed in the target area, eliminate more data redundancy, and significantly reduce the compression distortion under the same codebook size.

[0042] The data preprocessing process is as Figure 5 The data is processed as follows:

[0043] 1) Block processing of original seismic data: the present invention uses a block method with a size of 4*4*4 to divide the original seismic data into 64 points (the size of the block can be adjusted according to the actual data size) .

[0044] 2) Determi...

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Abstract

The invention discloses a three-dimensional seismic body vector quantization compression body rendering method. The method includes the steps of data preprocessing, vector quantization and decompression rendering. Through introduction of target features, compression loss of a target area is reduced, and the compression rate of a non-target area is improved. By means of introduction of the concept of data grading, data compression is facilitated. By means of introduction of hierarchy features, a target area is determined with combination of the hierarchy features, and compression of volume data is carried out by means of the information. Through introduction of the concept of an error coefficient, the distortion degree of the target area is effectively reduced by means of the error coefficient, and the compression rate of the whole is improved. As is shown in theories and emulation analysis, the method improves the peak signal-to-noise ratio of the target area on the situation that the whole data compression rate is improved.

Description

technical field [0001] The invention relates to a mass three-dimensional scalar field volume rendering visualization method, in particular to a three-dimensional seismic volume vector quantization compressed volume rendering method. Background technique [0002] Volume rendering technology is a technology that generates two-dimensional images based on three-dimensional data fields. Compared with surface rendering technology, volume rendering technology pays more attention to displaying volume details of data rather than surface details, and has broad application prospects in many fields such as medicine, geological exploration, meteorological analysis, and molecular model construction. [0003] With the continuous improvement of volume rendering technology, people have proposed a variety of volume rendering algorithms, including: direct volume rendering by ray-casting method, volume rendering by cross-cut transformation method, volume rendering technology based on texture pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/32
Inventor 鲁才李平春胡光岷
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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