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- W2361805833 abstract "Several image authentication schemes are either vulnerable to attacks or sacrifice localization accuracy to improve security. In this paper, a scheme is proposed that not only thwarts all kinds of attacks such as vector quantization(VQ) and oracle attack in order to satisfy the security but also ensures superior accuracy of tamper localization. If a tampered pixel is not detected in level-4, it will be detected in level 3, level 2 or level 1 with a probability of nearly 1. Theory analysis demonstrates that the method can detect any tampered pixel and the size of 2×2 pixel block with a missing rate less than 0.78% and 0.19% respectively, and the missing rate of more than or equal the size of 4×4 pixel block is approximately close to 0. Experimental results demonstrate that the proposed scheme is highly sensitive to intentional tampering and the embedding watermarking is imperceptive." @default.
- W2361805833 created "2016-06-24" @default.
- W2361805833 creator A5045527959 @default.
- W2361805833 date "2007-01-01" @default.
- W2361805833 modified "2023-09-24" @default.
- W2361805833 title "Secure Image Authentication Scheme Based on Hierarchical Structure" @default.
- W2361805833 hasPublicationYear "2007" @default.
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