Improved method of spread spectrum watermarking techniques using pixel-correlations

Authors:
Zheng Liu
Affiliations:
C4 Technology, Inc., Tokyo, Japan
Venue:
KES'05 Proceedings of the 9th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part II
Year:
2005

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Abstract

In recent years, the method of spread spectrum watermarking (SSW) has become the one of the most promising technique used for digital watermarking technology. However, the major problems of SSW technology is that the effectiveness of SSW detection will drop fairly without subtracting the host image from watermarked image because of the effect of correlation remains calculated between the host image and original pseudo-random sequences. In our previous work, we have proposed a method to improve the detection of SSW techniques by reduction of correlation remains using pixel-correlations in an image. In this paper, we have investigated the effectiveness of the proposed method with image experiments in detail. The experimental results illustrate that the correlation remains can be reduced greatly by using pixel-correlations.