Image encryption domain reversible information hiding system and method based on image segmentation and image spatial correlation

Abstract

The invention discloses an image encryption domain reversible information hiding system and method based on image segmentation and image spatial correlation. At an image sensing end, an image owner segments an image into three parts through a designed image segmentation algorithm: a black part, a white part and a gray part; the gray part is used for predicting the black part by adopting a way of combining a prediction error extension and multi-histogram translation, the least significant bit of the white part can be embedded into the black part of the image through a self-adaptive reversible information hiding algorithm, and then an encrypted image is generated through an encryption key; an information hider embeds secret information into the image through a hiding key. At an image receiving end, a receiver can firstly extract the secret information and then recover an original image as well as firstly recover the original image and then extract the secret information, thereby realizing the reversibility of the secret information and the original image. The system disclosed by the invention has the advantage of being good in secrecy and large in embedding capacity.

Description

technical field [0001] The invention relates to an image encryption domain information hiding technology, which belongs to the technical field of reversible information hiding and image processing. Background technique [0002] As an important branch in the field of information security, information hiding technology has developed rapidly since the new century, especially in the fields of digital copyright and secret communication. Reversible data hiding technology has been widely developed due to its ability to achieve reversible recovery of carrier objects and high embedding capacity. [0003] On this basis, in order to further ensure the confidentiality of images, a reversible information hiding algorithm based on image encryption domain is proposed. As an important combination of signal processing technology and information hiding technology in the encrypted domain, reversible information hiding in the ciphertext domain can play a double insurance role in information se...

AI Technical Summary

Problems solved by technology

The main reasons for the above difficulties: On the one hand, the current information hiding technology greatly depends on the encoding technology of the carrier, the media type it belongs to, or the attributes of the transform domain, and the process of embedding information must re-quantize and modify the characteristics of the carrier data, but Encryption will make the plaintext content present the greatest irregularity and uncertainty, and the original features are difficult to be extracted and utilized

On the other hand, modern encryption algorithms require that minimal changes in the plaintext will also spread to the entire ciphertext space, so that the more encrypted data is modified during the embedding process, the greater the distortion of the decryption result will be. Therefore, it is necessary to ensure that there is no distortion in decryption information embedding under the environment, or it is more difficult to increase the embedding capacity

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