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• W2787627359 abstract "To take into account the recovery quality, detection ability, and invisibility, this work proposes a recoverable fragile watermarking scheme based on block-DCT alterable-coding. According to the DCT coefficients of each 2×2 block, the alterable-capacity recovery watermark is generated by allocating more bits to the textural blocks and fewer bits to the smooth ones. Meanwhile, the authentication watermark of 4×4 block is generated using the hash function to improve the tamper detection performance. The authentication watermark and recovery one are embedded in the original block and the mapping block based on a secret key respectively. The multi-stage neighbor detection method based on authentication and recovery watermark is designed to improve localization ability. The simulation results show that the proposed scheme achieves better recovery quality and invisibility compared with the existing works due to the alterable-capacity recovery watermark and superior localization." @default.
• W2787627359 created "2018-02-23" @default.
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• W2787627359 date "2017-12-01" @default.
• W2787627359 modified "2023-09-26" @default.
• W2787627359 title "Block-DCT based alterable-coding restorable fragile watermarking scheme with superior localization" @default.
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• W2787627359 doi "https://doi.org/10.1109/apsipa.2017.8282151" @default.
• W2787627359 hasPublicationYear "2017" @default.
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