Abstract
This paper presents a novel reversible data hiding method for medical images with privacy protection in only partial of the image areas. Specifically, only those areas with privacy protection requirement are encrypted. Firstly, the cover image is segmented into two layers including the foreground layer where privacy information exists, and the background layer. Then, a parameter termed as shadowing factor is proposed to balance the requirements of privacy protection and embedding capacity. With the shadowing factor, the privacy area and the embedding area are obtained. Finally, location scrambling is employed to encrypt the privacy area, and data are embedded into the embedding area. The benefits of the proposed partial-encryption based RDH method are in three folds: improving the embedding capacity, providing implementation flexibility in choosing existing data hiding techniques, and presenting users with the capability of understanding some of the image content from the partially-encrypted image even without decryption.
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Acknowledgment
This work was supported in part by the National Natural Science Foundation of China under grants 61379156 and 61772573, and in part by the Science and Technology Program of Guangzhou, China under grant 201707010029.
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Chen, H., Hong, W., Ni, J., Chen, TS. (2018). Reversible Data Hiding in Partially-Encrypted Images. In: Sun, X., Pan, Z., Bertino, E. (eds) Cloud Computing and Security. ICCCS 2018. Lecture Notes in Computer Science(), vol 11065. Springer, Cham. https://doi.org/10.1007/978-3-030-00012-7_61
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DOI: https://doi.org/10.1007/978-3-030-00012-7_61
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