An Entropy Masking Model for Multimedia Content Watermarking
HICSS '04 Proceedings of the Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS'04) - Track 7 - Volume 7
IEEE Transactions on Information Theory
Counterfeiting attacks on oblivious block-wise independent invisible watermarking schemes
IEEE Transactions on Image Processing
Image information and visual quality
IEEE Transactions on Image Processing
Image adaptive watermarking using wavelet domain singular value decomposition
IEEE Transactions on Circuits and Systems for Video Technology
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One of the main properties of digital watermarking methods is their security against attacks. In this paper, a novel attack against an adaptive semi-fragile image watermarking is proposed. In this attack, watermarking key and watermark are estimated by using several watermarked images. In order to improve the watermarking scheme against the proposed attack, the entropy of image blocks is utilized. Using entropy is compatible with Human Visual System (HVS); therefore it is suitable to determine the weight of watermark in image blocks. Since entropy is a sensitive feature, it is used to improve the watermarking method performance against the proposed attack. It is shown that this modification does not affect the fidelity of the watermarked images.