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Information hiding method adaptive to multi-base representation of secret information

A secret information and information hiding technology, which is applied in the information hiding of self-adaptive secret information multi-base representation, and in the field of data communication, can solve the problems of ignoring the local complexity of the image block and the inability to accurately predict the pixel complexity, etc., to achieve high invisibility High performance and anti-detection ability, improved invisibility, and high security of information hiding

Active Publication Date: 2019-03-01
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

However, this type of method only considers the difference between two pixels, and ignores the local complexity of the image block, resulting in the inability to accurately predict the complexity of the location of the pixel pair.

Method used

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  • Information hiding method adaptive to multi-base representation of secret information
  • Information hiding method adaptive to multi-base representation of secret information
  • Information hiding method adaptive to multi-base representation of secret information

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Embodiment Construction

[0031] The invention provides a new multi-base representation information hiding method for secret information, which can improve the quality of the DE (Diamond Encoding Algorithm) hidden image with the same hidden capacity, especially for natural images or remote sensing images with many overflow points. Image, when the hidden capacity increases, the improvement of the dense image is more obvious. At the same time, the method has the characteristics of strong adaptability and high security, so it has practical value in ground system and spacecraft engineering.

[0032] The specific implementation manners of the present invention will be further introduced below in conjunction with the accompanying drawings.

[0033] figure 1 Shown is a schematic diagram of the pixel modification range of the DE algorithm, where k=2, B=13.

[0034] The steps of the information embedding process for realizing the self-adaptive secret information multi-base representation by the method of the ...

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Abstract

An information hiding method adaptive to multi-base representation of secret information comprises the following steps of: (1) dividing a carrier image into blocks, calculating a standard deviation ofthe each block, wherein Mu is an image block mean value; keeping one significant digit of Sigma after the decimal point to obtain a standard deviation set of the image; (2) performing statistics to obtain the proportion of the each standard deviation, and determining two threshold values for complexity classification of the image blocks according to statistical distribution of the standard deviations; (3) utilizing the complexity of the image block to perform base selection of secret information, and performing multi-base processing on the secret information to obtain a secret information sequence of the image block needing to be hidden; (4) pairing adjacent pixels in the image block, performing information hiding by utilizing a diamond encoding algorithm, so as to obtain stego carrier pixel pairs; (5) processing the image block which has different complexities before and after the hiding, so as to ensure unchangeable complexity; and (6) repetitively executing the step (3) to the step(5) until the secret information is fully hidden.

Description

technical field [0001] The invention relates to a data communication method, in particular to an information hiding method for self-adaptive secret information multi-base representation, which belongs to the field of communication (such as data communication technology, etc.). Background technique [0002] Information hiding, also known as data hiding, is to use the visual redundancy of human eyes to embed secret information to be transmitted into digital multimedia carriers (such as text, fingerprints, images, videos, etc.) The identified code stream is used to achieve the purpose of safe storage and secret transmission of information. [0003] Spatial hiding methods hide secret information by modifying the carrier pixel values. Most current concealment methods, such as LSBMR, EMD, FEMD, DE, etc., embed an equal amount of secret information in each carrier pixel, regardless of the local complexity of the carrier image. However, the human visual system (HVS) perceives the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/32
Inventor 刘娟妮周诠呼延烺魏佳圆方海朱历洪张茗茗回征
Owner XIAN INSTITUE OF SPACE RADIO TECH
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