12 May 2006 VQ/DCT-based robust image watermarking
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In this paper a robust watermarking technique based on Vector Quantization and the preciously developed spread spectrum robust watermarking technique is proposed. In this work, the watermark is embedded in both the DCT and codebook domains. Results illustrate that the proposed technique provides an improvement over the spread spectrum watermarking technique in terms of robustness for various signal processing attacks. A discussion on the robustness of the technique against the dead-lock and collusion problems is also provided.
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Dimitrios Charalampidis, "VQ/DCT-based robust image watermarking", Proc. SPIE 6246, Visual Information Processing XV, 62460L (12 May 2006); doi: 10.1117/12.666582; https://doi.org/10.1117/12.666582

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