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Reversible information hiding method for code groups

A technology of information hiding and encoding group, which is applied in the direction of image communication, electrical components, etc., and can solve the problem of small hiding capacity of the algorithm

Active Publication Date: 2016-03-23
贵州无聊科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the existing reversible information hiding methods, the reversible information hiding algorithm based on histogram is widely used, but the hiding capacity of these algorithms is not large.

Method used

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  • Reversible information hiding method for code groups
  • Reversible information hiding method for code groups
  • Reversible information hiding method for code groups

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0111] Suppose the hidden information is {1011101100010000010110111011}, first convert the binary hidden information into decimal codes, and group the decimal codes in pairs;

[0112]

[0113] Count the frequency of coding groups and sort them according to the frequency from large to small as follows;

[0114] coding group

Frequency

(2，3)

4

(0，1)

2

(0，0)

1

[0115] Statistical results: (2, 3) appears 4 times, (0, 1) appears 2 times, and (0, 0) appears 1 time.

[0116] According to the hiding method of the encoding group:

[0117] (2, 3) The hidden carrier information is (K, K, K+sig, K+sig, K+sig):

[0118] (0, 1) The hidden carrier information is (K+sig, K+sig, K+sig);

[0119] The hidden carrier information of (0, 0) is (K, K, K); but (2, 3) has the highest frequency, (0, 1) has the second frequency, and (0, 0) has the least frequency , the coding needs to be transformed, and the coding with a large frequency needs le...

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Abstract

The invention discloses a reversible information hiding method for code groups. 2bit in hidden information bit stream is converted into a decimal digit as a unit, 16 kinds of different codes in the converted decimal information are grouped, a hiding algorithm for each group of codes is established, and a one-to-one corresponding relation between code groups and carrier information is obtained. When information is hidden, statistics on the occurrence frequency of hidden information code groups is collected, the hidden information code groups are ranked, and the code groups occurring high frequently are hidden into the carrier information needing a few carriers, so that the hiding capacity is improved. When secret information is extracted, the code groups can be extracted according to the corresponding relation and decoded to obtain hidden information, and the carrier information is restored. The reversible information hiding method achieves high hiding capacity.

Description

technical field [0001] The invention relates to the fields of image processing and information security, in particular to a reversible information hiding method for coding groups. Background technique [0002] In recent years, with the popularity of computer networks, information security issues have become more and more prominent. Encryption is a traditional means of information security. If encrypted information is intercepted by an attacker during storage and transmission, the encrypted ciphertext will attract the attention of the attacker. Information hiding is a method to ensure information security. Through information hiding, the secret information after hiding the secret information is stored and transmitted. The secret information is the same as the general information and will not attract the attention of attackers. Reversible information hiding has become a research hotspot in recent years, and has important application value in military and medical information s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/32
CPCH04N1/32272
Inventor 俞春强张显全唐振军张师超何南
Owner 贵州无聊科技服务有限公司
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