在对数基于单个价值分解(SVD ) 抵抗到几何转变的一个新 watermarking 算法极的坐标被建议。(每分钟行数) 木头极的印射被用来抵抗旋转和可伸缩的攻击,并且奇怪甚至,量子化算法被用来嵌入水位标因此没有原来的主人图象,它能被提取。实验证明建议算法不仅抵抗各种各样的几何攻击而且对普通信号处理足够柔韧。
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.