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A data compression method suitable for complex images

A data compression and image technology, applied in the field of data communication, can solve the problems of narrowing the performance gap of standard compression methods and poor compression performance of complex images, and achieve the effect of improving compression effect, improving performance, and good compression effect

Active Publication Date: 2022-03-04
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

[0009] The technical problem that the present invention solves is: solve the problem that standard compression method is poor to the compression performance of complex image, can carry out high-performance compression to complex image (difficult to compress ordinary image or random noise image), PSNR improves from several dB to 20dB, Satisfies general users' requirements for distorted compression, narrowing the performance gap of standard compression methods

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  • A data compression method suitable for complex images
  • A data compression method suitable for complex images
  • A data compression method suitable for complex images

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Embodiment Construction

[0032] High-speed data compression transmission technology has been widely used in remote sensing satellites, space probes and other spacecraft and various satellite data transmission systems, and will be more widely used in the future. However, the on-board data compression method is based on the JPEG2000 algorithm, and the compression ratio is mainly 4 times. It can be said that the user can accept a compression ratio of 4, which is costly to implement and is restricted by others. The compression performance of the standard JPEG2000 algorithm for complex images is still not ideal.

[0033] In order to verify the performance of the compression algorithm proposed in this paper, four 8-bit grayscale image data with a size of 512×512 are used for data compression and transmission in the simulation experiment.

[0034] The present invention: the steps of a data compression method suitable for complex images are as follows:

[0035] 1) arrange complex image (image with poor compr...

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Abstract

The present invention proposes a data compression method suitable for complex images. By grouping complex images and images that are easier to compress, a new image is formed through special arrangement, and the whole is compressed by standard compression methods. After decompression, complex images recovered Image compression performance has been greatly improved. In the case of simulation experiments, according to the typical arrangement, for the complex image baboon, the PSNR performance is improved by 7.63dB when it is compressed by 4 times, and the PSNR performance is improved by 6.11dB when it is compressed by 8 times; for complex images (random noise images), it is compressed by 4 times The PSNR performance is improved by 20dB when the compression is 8 times, and the PSNR performance is improved by 13dB when the compression is 8 times. It can be said that this method can always improve the data compression performance of complex images. After R-fold compression, the PSNR performance of complex images is significantly improved, and an improvement of several dB to more than 20 dB can be obtained.

Description

technical field [0001] The invention relates to a data transmission method, in particular to a data compression method for complex images, which belongs to the technical field of data communication. Background technique [0002] Data transmission and image processing are important research topics in the field of communication at present. With the development of science and technology, people's demand for high-resolution images is increasing, and data compression is imperative. [0003] Data compression is divided into lossy compression and lossless compression methods. The lossy compression method has a relatively large compression ratio, but there is a certain amount of information loss between the restored image and the original image after compression. As long as the subjective and objective evaluation indicators meet the requirements, it does not have much application in practice. influences. There is no loss of information between the restored image and the original i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T9/00
CPCG06T9/00
Inventor 周诠
Owner XIAN INSTITUE OF SPACE RADIO TECH
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