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A method of information transmission based on jpeg2000 compressed code stream

A technology for compressing code stream and information transmission, applied in the field of communication, can solve the problems of unfixed hidden capacity and much additional information, and achieve the effect of reducing image quality and improving utilization.

Active Publication Date: 2018-03-09
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

[0004] The existing technology of combining JPEG2000 and information hiding is mainly to partially decompress the JPEG2000 compressed data before hiding transmission, to hide information in wavelet transform coefficients or to adopt other methods, either the hidden capacity is not fixed, or the required More additional information

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  • A method of information transmission based on jpeg2000 compressed code stream

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Embodiment Construction

[0027] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] In order to verify the performance of the algorithm proposed in this paper, in the simulation experiment, the compressed data stream A formed by compressing the 8-bit grayscale image X with a size of 512×512 and compressing 4 times with JPEG2000 is used for information transmission and recovery. The number of bytes of A is L= 512*128 bytes.

[0029] Information bytes: K bytes, arbitrary data: generated by random numbers in simulation. The hidden capacity is K bytes, the relative capacity of the compressed domain is K / (512*128), and the corresponding relative capacity of the original image domain is K / (512*512)

[0030] For example, the hidden capacity is K=2048 bytes, the relative capacity of the compressed domain is 2048 / (512*128)=1 / 32, corresponding to the relative capacity of the original image domain K / (512*512)=1 / 128.

[...

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Abstract

The invention discloses a method for information transmission based on JPEG2000 compressed code streams. The method can embed information in compressed data of various images with different compression multiples, without increasing the amount of data, without changing the JPEG2000 compression format, and without affecting normal decompression. The receiving end is able to recover the information as well as the carrier image. Without increasing channel resources, the amount of transmitted data is increased, and the transmission efficiency of the data transmission system is improved. The present invention can make the ratio of the amount of information hidden in the compressed domain to the total data volume of the compressed domain reach a desired ratio such as 1 / 16, 1 / 8, 1 / 4, 1 / 2, if compressed by 4 times, the ratio of the original data volume The ratio is 1 / 64, 1 / 32, 1 / 16, 1 / 8, and the information data can be restored normally, the peak signal-to-noise ratio between the carrier image and the original image is above 30dB, and the PSNR loss is between 1dB to several dB It does not affect the normal use of the image.

Description

technical field [0001] The invention relates to an image communication method, in particular to a method for embedding information into an image for transmission, 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 issue of information security has become an increasingly urgent issue. Information hiding (data hiding) is an important branch of information security. It uses human visual redundancy to embed secret information into the carrier, so as to achieve The purpose of secure transmission of confidential information. Information hiding is usually regarded as a communication process, its input is the secret data to be transmitted, the public carrier data is transmitted in the channel, and the carrier data with hidden secret information is received. [0003] With the development of science and technology, the efficient transmission of image data and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/467H04N19/88
Inventor 周诠呼延烺崔涛张茗茗刘娟妮
Owner XIAN INSTITUE OF SPACE RADIO TECH
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