Segment-based adaptive histogram translation reversible information hiding method

Abstract

The invention discloses a segment-based adaptive histogram translation reversible information hiding method comprising firstly, dividing audio information into an auxiliary segment and an embedded segment, and segmenting the embedded segment; then constructing auxiliary information and to-be-embedded information including secret information, first embedding the auxiliary information in the audio information; calculating the base value of each sub-segment in the embedded segment, constructing a sub-segment histogram, comparing each element of the sub-segment with the base value, and translatinga square graph so as to embedding the to-be-embedded information in the audio information to obtain the audio information with the secret information. The method has advantages that in the case of ensuring that information is completely embedded, a pair of base values for comparison is selected for each sub-segment so as to increase the capacity of information embedded in the audio; the change invalue of the audio is one unit at most so as to achieve a good hearing effect; the audio embedded with the 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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