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Information hiding method and extraction method based on overlapping Hamming codes

An information hiding and Hamming code technology, applied in the information hiding method and extraction field based on overlapping Hamming code, can solve the problems of low embedding rate and insufficient potential of Hamming code in the field of information hiding, etc., to reduce image loss, The effect of improving quality and increasing the capacity of hidden information

Active Publication Date: 2021-06-01
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0003] (7,4) Hamming code is a kind of linear error correction code, the error correction characteristic of (7,4) Hamming code has been fully used in the field of information hiding at present, but the use of (7,4) Hamming code in the field of information hiding The potential has not been fully tapped
Combining overlapping (7,4) Hamming codes to improve the embedding capacity, there have been successful cases. Although the hidden images generated by these simple methods have high visual quality, they still have a very low embedding rate. Therefore, a method based on Large-capacity and low-loss information hiding methods for overlapping (7,4) Hamming codes are worthy of further study

Method used

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  • Information hiding method and extraction method based on overlapping Hamming codes
  • Information hiding method and extraction method based on overlapping Hamming codes
  • Information hiding method and extraction method based on overlapping Hamming codes

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Embodiment approach

[0124] As an implementation, the information extraction method includes the following steps: obtaining seven binary representation values ​​after information hiding in each image block of the image after information hiding; obtaining the seventh binary representation value after information hiding The 5th-6th bits are used as the first mark information; the 7th-8th bits of the seventh binary representation value obtained after information hiding are used as the second mark information; the first binary representation value after information hiding is obtained The last 4 bits, the last 3 bits of the second binary representation value after information hiding and the last 4 bits of the third binary representation value after information hiding form the third 11-bit codeword; The last 4 bits of the fourth binary representation value, the last 3 bits of the fifth binary representation value after information hiding and the last 4 bits of the sixth binary representation value after ...

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Abstract

The invention provides an information hiding method and extraction method based on an overlapped Hamming code. The information hiding method comprises the following steps: dividing an original image into 1 * 7 image blocks; each image block comprising seven original pixels; and embedding to-be-hidden information of four sections of 3-bit secret messages into each image block by adopting an overlapping Hamming code mode to obtain an information-hidden image. According to the method, the Hamming codes capable of being overlapped are used for improving the hidden information capacity.

Description

technical field [0001] The invention relates to the technical field of information hiding, in particular to an information hiding method and an extraction method based on overlapping Hamming codes. Background technique [0002] Traditional cryptography protects the content of information through the incomprehensibility of ciphertext, while the incomprehensibility of ciphertext also exposes the importance of information. Information hiding technology is different from traditional cryptography. It utilizes the ubiquitous redundancy of multimedia information to hide secret information in multimedia information without causing significant changes in the physical appearance of multimedia information, thereby ensuring the confidentiality and security of secret information. . [0003] (7,4) Hamming code is a kind of linear error correction code, the error correction characteristic of (7,4) Hamming code has been fully used in the field of information hiding at present, but the use ...

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Application Information

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IPC IPC(8): H04N1/32
CPCH04N1/32267
Inventor 冷璐康浩阳黎明储珺曾接贤
Owner NANCHANG HANGKONG UNIVERSITY