Journal ArticleDOI
Reversible Data Hiding in Encrypted Images by Reserving Room Before Encryption
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TLDR
This paper proposes a novel method by reserving room before encryption with a traditional RDH algorithm, and thus it is easy for the data hider to reversibly embed data in the encrypted image.Abstract:
Recently, more and more attention is paid to reversible data hiding (RDH) in encrypted images, since it maintains the excellent property that the original cover can be losslessly recovered after embedded data is extracted while protecting the image content's confidentiality. All previous methods embed data by reversibly vacating room from the encrypted images, which may be subject to some errors on data extraction and/or image restoration. In this paper, we propose a novel method by reserving room before encryption with a traditional RDH algorithm, and thus it is easy for the data hider to reversibly embed data in the encrypted image. The proposed method can achieve real reversibility, that is, data extraction and image recovery are free of any error. Experiments show that this novel method can embed more than 10 times as large payloads for the same image quality as the previous methods, such as for PSNR=40 dB.read more
Citations
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Journal ArticleDOI
Image encryption
Long Bao,Yicong Zhou +1 more
TL;DR: A new image encryption concept to transform an original image into a visually meaningful encrypted one is proposed and an example of the implementation of this concept is introduced.
Journal ArticleDOI
Effective reversible data hiding in encrypted image with privacy protection for image content
Chuan Qin,Xinpeng Zhang +1 more
TL;DR: This scheme has better decrypted image quality and higher image recovery accuracy, and an adaptive evaluation function of smoothness characteristic along the isophote direction.
Reversible Data Hiding in Encrypted Image with Privacy Protection for Image Content
Chuan Qin(,Xinpeng Zhang +1 more
TL;DR: Wang et al. as discussed by the authors proposed a novel reversible data hiding scheme in encrypted image, where the content owner encrypts the original image with the encryption key to achieve privacy protection for image content, and then, each block of the encrypted image is embedded with one secret bit by the data hider using the data-hiding key.
Journal ArticleDOI
Separable and Reversible Data Hiding in Encrypted Images Using Parametric Binary Tree Labeling
Shuang Yi,Yicong Zhou +1 more
TL;DR: A data embedding method ( PBTL–DE) is proposed to embed secret data to an image by exploiting spatial redundancy within small image blocks and a PBTL-based reversible data hiding method in encrypted images (PBTL–RDHEI).
Journal ArticleDOI
Separable reversible data hiding in encrypted images via adaptive embedding strategy with block selection
TL;DR: Since only a portion of blocks are modified during embedding, the directly-decrypted image quality is satisfactory, and more bits can be embedded into the blocks belonging to smooth set, hence, embedding rate is acceptable.
References
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Book
Handbook of Applied Cryptography
TL;DR: A valuable reference for the novice as well as for the expert who needs a wider scope of coverage within the area of cryptography, this book provides easy and rapid access of information and includes more than 200 algorithms and protocols.
Journal ArticleDOI
Reversible data embedding using a difference expansion
TL;DR: The redundancy in digital images is explored to achieve very high embedding capacity, and keep the distortion low, in a novel reversible data-embedding method for digital images.
Journal ArticleDOI
Reversible data hiding
TL;DR: It is proved analytically and shown experimentally that the peak signal-to-noise ratio of the marked image generated by this method versus the original image is guaranteed to be above 48 dB, which is much higher than that of all reversible data hiding techniques reported in the literature.
Journal ArticleDOI
Expansion Embedding Techniques for Reversible Watermarking
D.M. Thodi,Jeffrey J. Rodriguez +1 more
TL;DR: The experimental results for many standard test images show that prediction-error expansion doubles the maximum embedding capacity when compared to difference expansion, and there is a significant improvement in the quality of the watermarked image, especially at moderate embedding capacities.
Proceedings ArticleDOI
Reversible data hiding
TL;DR: A prediction-based conditional entropy coder which utilizes static portions of the host as side-information improves the compression efficiency, and thus the lossless data embedding capacity.