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A Blind Watermarking Algorithm Resisting to Geometric Transforms Based on SVD 被引量:2
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作者 LI Xiuguang YANG Xiaoyuan 《Wuhan University Journal of Natural Sciences》 CAS 2011年第6期487-492,共6页
A new watermarking algorithm resisting to geometric transformation based on singular value decomposition (SVD) in logarithm polar coordinate is proposed. The log-polar mapping (LPM) is used to resist rotation and ... A new watermarking algorithm resisting to geometric transformation based on singular value decomposition (SVD) in logarithm polar coordinate is proposed. The log-polar mapping (LPM) is used to resist rotation and scaling attacks, and the odd-even quantization algorithm is used to embed watermark so it can be extracted without the original host image. The experiments show that the proposed algorithm not only resists various geomet- ric attacks but also is robust enough to the common signal processing. 展开更多
关键词 blind watermarking singular value decomposition(SVD) logarithm polar coordinate resist to geometric transform
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