A Chaotic Encryption Reversible Information Hiding Method Based on Even-odd Discriminant Strategy

Abstract

The invention discloses a chaotic encryption reversible information hiding method based on a parity discrimination strategy, which belongs to the field of digital watermarking and information hiding. On the premise of ensuring the visual effect, the invention scrambles and encrypts the original image through Henon mapping, and reuses The logistic map randomly selects the embedding position of the watermark to ensure the high security of the image. When extracting the watermark, the embedded data is judged according to the parity of the pixel value of the watermark embedding position, and the lossless restoration of the image is realized. The experimental results show that the peak signal-to-noise ratio of the image embedded in the watermark in the encrypted domain remains above 69 decibels after decryption and recovery, and the invisibility is very good. After the watermark is proposed, it can be restored without loss, with high security and practical value. .

Description

Technical field [0001] The present invention belongs to the field of digital watermarks and information hidden, which involves a chaotic encryption reversible information hiding method based on parity discriminant strategy. Background technique [0002] Now people have become stronger and stronger about their knowledge of intellectual property, in order to prevent their labor results from being used by others, protect their legitimate rights and interests, the protection of property rights in the image is also more important. Encryption technology and watermarking technology are two important means to protect multimedia digital security and complete. The reversible digital watermarking technology is a new branch of digital watermarking technology, not only can properly extract watermark information, but also can restore the original carrier without distortion after extracting information, so it is widely used in medical images, military images and legal evidence images. field. En...

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Problems solved by technology

[0003] The document "Adaptive image encryption for high capacity reversible datahiding" (CHOI K, PUN C, 2017IEEE Conference on Dependable and Secure Computing, Taipei, 2017, pp.429-432.) applies a transformation before encrypting a given image, generating The encrypted image is smoother and has higher spatial correlation, which enables a high embedding rate, but affects the quality of the encrypted image, resulting in poor visibility of the encrypted image

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