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Collusion attack-resistant watermarking scheme using correlation peak position modulation
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DOI：10.1007/s11042-014-2233-6.png)
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Abstract
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In this paper, we propose a new digital watermarking algorithm that hides specific information related to content-users. The proposed algorithm uses a correlation peak position modulation (CPPM) to ensure robustness and sufficient capacity, and this is modulated by user information. For a JPEG compression operation with a quality factor of 35, the other methods show a bit error rate of 2.45 % when two messages are embedded, but using CPPM this is reduced to 0 %, even with four messages. In case of a collusion attack, CPPM can detect up to 12 attackers, compared with a maximum of five attackers with position-based watermarking. Our experiments demonstrate that the proposed algorithm is a competitive method for image watermarking.
Keywords:
Correlation peak position modulation
Image watermarking
Spread spectrum
Collusion attack
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