2010 Second International Workshop on Education Technology and Computer Science 2010
DOI: 10.1109/etcs.2010.237
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A Correlation Coefficient Based Affine Parameter Estimation Algorithm for Image Watermark Detection

Abstract: In digital image watermark applications, most of watermark algorithms are vulnerable to geometrical affine transformation attacks. In order to resist affine transformation attacks, we propose a correlation coefficient based algorithm, which uses the original image to estimate affine parameters and recover the affine transformed image before watermark detection. Compared with existing affine parameter estimation algorithms, the correlation coefficient based algorithm is more precise, and is able to resist vario… Show more

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