A Segmentation-Based Adaptive Histogram Shift Reversible Information Hiding Method

Abstract

The invention discloses a segmentation-based self-adaptive histogram translation reversible information hiding method. First, the audio is divided into an auxiliary segment and an embedded segment, and the embedded segment is segmented; then, the auxiliary information and the embedded segment including secret information are constructed. Information, auxiliary information is first embedded in the audio; base value calculation is performed for each sub-segment in the embedded segment, a sub-segment histogram is constructed, each element of the sub-segment is compared with the base value, and the square map is shifted, and then the sub-segment to be The embedded information is embedded in the audio, and the audio with the secret information is obtained. The advantage of the solution of the present invention is that, under the condition that the information is fully embedded, selecting a pair of base values ​​for comparison in each subsection improves the capacity of the information embedded in the audio; Better auditory effect; the audio after embedding secret information still has a high signal-to-noise ratio.

Description

technical field [0001] The invention relates to the field of multimedia information security, and more specifically, relates to a segmentation-based adaptive histogram translation reversible information hiding method. Background technique [0002] At present, the commonly used audio reversible information hiding method is to convert useful secret information into a binary bit stream and hide it on the public audio file for sending and transmission. Distortion cannot be restored after extraction. In some practical applications, it is unacceptable to distort audio or secret information due to embedded information. For example, in the field of copyright certification of digital audio works, not only the embedded information is of great significance, but also the restoration of the original carrier audio It is also very necessary. [0003] Existing reversible information hiding schemes, such as the reversible information hiding method based on audio error expansion, face two p...

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Problems solved by technology

[0002] At present, the commonly used audio reversible information hiding method is to convert useful secret information into a binary bit stream and hide it on the public audio file for sending and transmission. Distortion cannot be restored after extraction

In some practical applications, it is unacceptable to distort audio or secret information due to embedded information. For example, in the field of copyright certification of digital audio works, not only the embedded information is of great significance, but also the restoration of the original carrier audio is also very necessary

[0003] Existing reversible information hiding schemes, such as the reversible information hiding method based on audio error expansion, face two problems. One is that because the human auditory system is relatively sensitive, as the amount of embedded information increases greatly, the audio auditory effect also decreases. , can be easily identified as embedding secret information, which brings risks to related application fields; the second problem is that for some audio carriers with low sampling frequency, the existing error expansion scheme is also limited in the capacity of embedded information. limited

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