Abstract
In recent years, digital watermarking technology has been widely used to solve the protection of privacy issues in medical images. However, the existing algorithms are failed to solve the protection problems against geometric attacks. To solve this problem, a robust digital watermarking algorithm for medical images based on PHTs-DCT is proposed in this paper. For embedding watermark, DCT is applied to reduce the redundant data of the image, then the coefficients are calculated via PHTs and the DCT to construct a binary feature sequence. Moreover, the watermark information is encrypted by Logistic mapping, and the zero watermark is constructed and stored in a third party medical image protection database. Extensive experiments have shown that the proposed algorithm has good robustness to geometric attacks and common attacks, especially anti-translation, rotation, and compression attacks.
This work was supported in part by the Hainan Provincial Natural Science Foundation of China under Grant 2019RC018 and by the Natural Science Foundation of China under Grant 62063004 and 61762033, in part by the Hainan Provincial Higher Education Research Project under Grant Hnky2019-73, and in part by the Key Research Project of Haikou College of Economics under Grant HJKZ18-01.
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Yi, D. et al. (2021). A Robust Digital Watermarking for Medical Images Based on PHTs-DCT. In: Cheng, J., Tang, X., Liu, X. (eds) Cyberspace Safety and Security. CSS 2020. Lecture Notes in Computer Science(), vol 12653. Springer, Cham. https://doi.org/10.1007/978-3-030-73671-2_10
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DOI: https://doi.org/10.1007/978-3-030-73671-2_10
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