A geometrically robust image-adaptive watermarking scheme based on scale invariant feature transform(SIFT) and DWT is proposed.Firstly,the steady feature points are extracted from the host image by using SIFT;then the size and orientation of each local feature region are determined adaptively according to its feature scale and orientation.Lastly,some unoverlapped local feature regions with large-scale are selected for embedding watermarking,and the same digital watermarking is embedded into each local featu...
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