Compression sensing technology-based method for distributed type information source coding

A distributed information source, compressed sensing technology, applied in the field of video image data processing, to achieve the effect of easy implementation, low complexity and simple operation

Inactive Publication Date: 2010-06-16
BEIJING UNIV OF POSTS & TELECOMM
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But because the number of equations in the above formula is less than the number of unknown variables, therefore, s i There are infinitely many solutions of

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  • Compression sensing technology-based method for distributed type information source coding
  • Compression sensing technology-based method for distributed type information source coding
  • Compression sensing technology-based method for distributed type information source coding

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[0068] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0069] Since the image or video source often presents a certain degree of sparsity, for example, the signal in a certain transformation domain of DCT domain and wavelet domain has the structural characteristics of sparse representation, so it has the basis of using CS technology. But when Figure 5 In the traditional distributed source coding method based on the DCT transform domain shown in the figure, it is necessary to perform Nyquist sampling on the data source to obtain a large amount of original data, which requires a huge sampling and storage cost, and then when performing the DCT transform operation, it must be discarded Most of the transform coefficients cause waste of storage and transmission.

[0070] Basic train of thought of the present invention is:...

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Abstract

The invention provides a compression sensing technology-based method for distributed type information source coding. The advantages of the CS technology and the sparse characteristics of video images are adopted in a process of realizing the distributed type information source coding DSC to form a novel distributed type information source coding method, namely in the corresponding operational steps of the DSC process, the CS technology is adopted to process the video image data and execute the corresponding recovery processing which comprises using the CS operation and the sparse reconstruction of the CS to replace the data sampling and the DCT transformation operation and the DCT inverse transformation in the conventional information source coding respectively so as to use much less measuring data to reconstruct a video image source, reduce a sampling speed ratio and memory burden of the system, reinforce the robustness of the system and realize the construction of the distributed type information source coding in three different structures. The method has the advantages of reducing the sampling rate and the operating complexity of the system, obviously reducing the workload of the data sampling and relative processing and the necessary memory space, improving the robustness of the system and reducing the speed rate of data transmission.

Description

technical field [0001] The invention relates to a distributed information source coding method based on compressed sensing technology, and belongs to the technical field of video image data processing. Background technique [0002] First introduce the implementation method of distributed source coding DSC (distributed source coding): [0003] In recent years, multimedia communication has been extensively studied, among which source coding technology is one of the focuses. In traditional source coding standards, the encoder needs to run certain algorithms to exploit correlations within the source data, thereby reducing the transmission rate. Therefore, the complexity of the encoder is often much higher than that of the decoder. However, this traditional structure is not suitable for some current emerging networks, such as video sensor networks, which requires the design of a new video coding structure, so that the computational load of the encoder can be transferred to the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/30H04N19/625
Inventor 贺志强徐文波牛凯王东昊汪滢
Owner BEIJING UNIV OF POSTS & TELECOMM
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