Reversible secret information hiding and extracting method

A technology of secret information and extraction method, which is applied in the field of reversible secret information hiding and extraction, can solve problems such as distortion, and achieve the effect of increasing the capacity of secret information
CN103489152AInactive Publication Date: 2014-01-01NINGBO UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NINGBO UNIV
Publication Date
2014-01-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a reversible secret information hiding and extracting method which is mainly used for realizing dynamic compromise control over hiding capacity and image quality. First, a carrier image is preprocessed to obtain a grey level histogram of partitioned images; then, a histogram steep index is introduced, a threshold value is set for the histogram steep index, and secret information is inlaid in the carrier image after judgment; finally, the secret information is extracted from the carrier image in which the secret information is inlaid so as to restore the original image. The reversible secret information hiding and extracting method achieves the effect that under the condition that the image quality is acceptable, the information hiding capacity is improved and dynamically controlled; the reversible secret information hiding and extracting method has application space in biomedicine image information hiding, important military image secrecy transmission and other aspects.
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Description

Technical field

[0001] The invention relates to the field of information hiding, in particular to a method for hiding and extracting reversible secret information. Background technique

[0002] Information hiding is to embed the information that needs to be protected into the carrier, and achieve the purpose of transmitting the secret information through the transmission of the carrier. Under normal circumstances, a certain degree of distortion is inevitable in the carrier embedded with secret information. But for some special carriers, such as biomedical images, it is necessary to hide the information related to the image in the image, but biomedical images have extremely high requirements for integrity. Therefore, the processing of these carriers requires the introduction of reversible information hiding technology.

[0003] Currently, the typical methods of reversible information hiding technology mainly include reversible information hiding methods based on lossless compressi...

Claims

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