Abstract
This paper presents a novel image watermarking resynchronization technique in discrete wavelet trans-form (DWT) domain. Rotation and shearing attacks desynchronizing watermark model in DWT domain are given respectively. According to these models, two corresponding watermarking resynchronization algorithms are proposed. The ideal watermark can be extracted from the resynchronized watermarked images that ever underwent rotation or shearing attacks. Experimental results show that the proposed watermarking resynchronization schemes are extremely effective to against rotation and shearing attacks.
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