Encrypted image reversible information hiding method based on adaptive parameter binary tree marking

Abstract

The invention provides an encrypted image reversible information hiding method based on adaptive parameter binary tree marking. The method comprises the steps: for an image owner, carrying out vector quantization prediction on an original image to obtain a prediction error; obtaining an optimal parameter set for the original image by using a self-adaptive parameter binary tree marking method, and marking image blocks by using the optimal parameter set; and finally, encrypting the index value and the non-embeddable pixel of the image block and sending the encrypted index value and non-embeddable pixel to an information hider. For an information hiding person, secret information is encrypted by using the encryption key and embedded into the vacated redundant space to obtain a secret-containing image. For the receiver, if the receiver has the encryption key, the original image can be obtained through decryption; if the mobile terminal has a hidden key, the mobile terminal can be used for decrypting and acquiring secret information; if the two secret keys are contained at the same time, the original image and the secret information can be decrypted at the same time. The scheme provided by the invention has relatively excellent performance in embedding capacity.

Description

technical field [0001] The invention belongs to the image content security field of information security, and in particular relates to a reversible information hiding method of an encrypted image marked with an adaptive parameter binary tree. Background technique [0002] In the new wave of scientific and technological revolution, people's way of life has undergone tremendous changes compared with the past, and this change is largely driven by information technology. Informatization not only changes people's basic necessities of life, but also continues to expand and meet people's higher-level needs. However, while people are enjoying many conveniences brought by information-based life, network viruses, Trojan horses and illegal organizations all pose serious threats to information security. Therefore, the security of information during transmission becomes particularly important. [0003] As an information transmission medium different from language, images have become an...

AI Technical Summary

Problems solved by technology

One drawback of this type of information hiding technique is that the content of the original image will always be exposed to the information hider

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