Robust multiplicative patchwork method for audio watermarking
IEEE Transactions on Audio, Speech, and Language Processing
A logarithmic quantization index modulation for perceptually better data hiding
IEEE Transactions on Image Processing
Detection for multiplicative watermarking in DCT domain by Cauchy model
ICICS'11 Proceedings of the 13th international conference on Information and communications security
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Spread-spectrum schemes embed additive or multiplicative watermarks into the host contents for copyright protection. However, their performances are reduced by the interference from the host contents. Thus, in this work, we introduce a simple double-sided technique to utilize this interference for performance improvements. Different from the previous host interference rejection schemes, it does not reject the host interference. However, it can also achieve great performance enhancement over the traditional spread-spectrum schemes. Moreover, due to this nice property of not rejecting the host interference, it has a big advantage over the host interference rejection schemes in that the perceptual analysis can be easily implemented for our scheme to improve the perceptual quality of the watermarked contents. Our technique is effectively employed in both additive and multiplicative spread-spectrum schemes. Finally, its performance advantage is demonstrated through both theoretical and empirical comparisons.