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Large compression ratio data compression method based on big data

A technology of data compression and compression ratio, which is applied in the field of communication, can solve problems such as poor image effect, imperfect image compression method, and unsatisfactory implementation complexity, etc., to achieve wide coverage, improve restored image quality, and simple linear operation Effect

Active Publication Date: 2015-11-25
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

[0006] (2) The image compression method with large compression ratio is not perfect enough;
[0007] There are few methods with large compression ratio in the literature, or the implementation complexity cannot meet the requirements, or the compression performance is good for some images, but not good for other images

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  • Large compression ratio data compression method based on big data

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Embodiment Construction

[0028] Image compression technology has been widely used in various fields of the national economy, including remote sensing satellites, space probes and other spacecraft image compression, airborne aerial image compression, ground image compression, etc. With the advent of the era of big data, high-power compression technology will inevitably be more widely applied. The compression method of the present invention has distinctive features and a large compression ratio, can greatly improve the performance of the image data compression method, and has the effect of keeping the original image secret and concealed transmission, and has practical value in the field of image communication and information network transmission.

[0029] The unique method of "transmitting coefficients and errors at the sending end and the database linear calculation in advance, and error correction at the receiving end" of the present invention is suitable for image transmission in the case of an open c...

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Abstract

The invention discloses a large compression ratio data compression method based on big data. Lossy compression from a hundred times to ten thousand times can be realized. In the method, based on an image data set constructed in advance and linear transformation, compression is performed. The method is characterized in that linear combination is performed on an original image A or a subimage based on a basic image of an image library and a closest image is selected; coding transmission is performed on a final obtained linear coefficient and an image error so that a problem that a compression ratio can not be increased through directly compressing the original image is avoided and limitation of a traditional data compression method is broken through; a large data volume of off-line learning is used to exchange for increase of performance and the compression ratio so that complexity of decompression realization is greatly reduced.

Description

technical field [0001] The invention relates to an image communication method, in particular to a data compression method with a large compression ratio, and belongs to the field of communication (such as data communication technology, etc.). Background technique [0002] The current society is an information society, and the total amount of information data that needs to be transmitted is extremely large; with the development of science and technology, people's demand for high-resolution images is increasing, and the amount of data obtained is also very large, which poses a challenge for data storage and transmission. Bring a lot of pressure, therefore, people are always trying to improve the compression ratio and compression quality of data compression. [0003] Currently, image compression methods suffer from the following problems: [0004] (1) The compression ratio of the image data compression method is not high; [0005] The compression ratio of data compression sta...

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Application Information

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IPC IPC(8): H04N19/166H04N19/196H04N19/42H04N19/124
Inventor 周诠刘娟妮王鹏呼延烺崔涛魏佳圆
Owner XIAN INSTITUE OF SPACE RADIO TECH
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