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High-compression-rate and high-reducibility compression and decompression method for frame data

A compression method and technology for compressing data, which is applied in digital video signal modification, image communication, electrical components, etc., and can solve problems such as reliability, real-time performance, and restoration cannot be guaranteed.

Active Publication Date: 2020-11-10
上海定九康科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to overcome the technical defects of the prior art, the present application provides a data compression and decompression method of this frame with high compression rate and high reducibility, which is used to solve the problems of reliability, real-time and reducibility during data compression and transmission in the prior art. non-guaranteed issues

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  • High-compression-rate and high-reducibility compression and decompression method for frame data

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Embodiment 1

[0060] refer to figure 1 As shown, this embodiment provides a method for compressing and decompressing data of this frame with high compression rate and high reducibility, including a compression method and a decompression method. Wherein, the compression method includes the following steps:

[0061] Step S110: Receive pending data frame X 0 ={x 1 ,...,x i ,...,x m}, whose length is m. In this step, an input data frame with a specified length of m is received.

[0062] Step S120: Use the first-order backward difference method to process the data frame to obtain the initial value x of the data 1 and differential signal X 1 ={0,x 2 -x 1 ,...,x i -x i－1 ,...,x m -x m-1}.

[0063] In this step, the initial value of the data x 1 Stored in the header data of the packet.

[0064] In this step, the data frame is processed by the first-order backward difference method, so as to improve the distribution concentration in the data value. In some application scenarios, suc...

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Abstract

The invention discloses a high-compression-rate and high-reducibility local frame data compression and decompression method. The method comprises a compression method and a decompression method. The compression method comprises the following steps: after receiving a to-be-processed data frame, carrying out differential processing, then carrying out WHT transformation on a differential result, carrying out coefficient interception on data subjected to WHT transformation, carrying out stepped quantization on intercepted reserved data, carrying out bit stream recombination on a quantization result, and obtaining byte stream data subjected to bit stream recombination; compressing the byte stream data by using compression coding to obtain final compressed data, and outputting the final compressed data. The decompression method is reverse operation, and decompressed data is obtained. The compression and decompression method of the frame data has the characteristics of high compression rate and high reduction rate, and by simplifying the data processing unit and improving the compression rate and the reducibility, the occupied capacity in the storage and transmission process is reduced, the transmission rate is increased, the transmission time is shortened, and meanwhile, the real-time performance and the stability of the data are guaranteed.

Description

technical field [0001] The invention relates to the field of data compression, in particular to a method for compressing and decompressing current frame data with high compression rate and high reducibility. Background technique [0002] Data compression is a technology that reduces the amount of data by re-encoding redundant information in the signal or performing component trade-offs on the signal. [0003] In the fields of computer science and information science, compression algorithms are widely used to reduce data storage and transmission costs, so as to improve transmission efficiency and save costs. Especially in the application of long-distance wireless signal transmission, high-efficiency data compression enables many applications to complete transmission tasks with low bandwidth. Since it can help reduce operating costs such as storage space or connection bandwidth, data compression technology has always been a hot spot in research and technology implementation. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/124H04N19/13H04N19/184H04N19/42
CPCH04N19/42H04N19/124H04N19/13H04N19/184
Inventor 滕磊李自明王利明徐峰
Owner 上海定九康科技股份有限公司
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