计算机与数字工程2011，Vol.39Issue(10)：138-141,4.
基于对数极坐标下的SVD数字水印算法
A Digital Watermarking Algorithm Based on SVD and Log-polar Coordinates
摘要
Abstract
In order to solve the watermark non-synchronization on Cartesian coordinate, this paper proposes one method resisting to Rotation and scaling based on logarithm polar coordinate, which can against rotation attack ability efficiently. For rotation causing distortion, we make use of LPM(log-polar maping), which can transform rotation problem in Castesian coordinate to translation property in LPM coordinate. After translation, we use an exhaustive search to detect test image involves watermarking or not The experiment results demonstrate the proposed method can obtain better visual effect, meanwhile, it is robust enough to some image degradation process such as adding noise, cropping, filtering and JPEG compres-sioa关键词
笛卡尔坐标/对数极坐标/鲁棒性/奇异值分解Key words
Cartesian coordinate, logarithm polar coordinate, Robustness, SVD分类
信息技术与安全科学引用本文复制引用
何冰,朱志平..基于对数极坐标下的SVD数字水印算法[J].计算机与数字工程,2011,39(10):138-141,4.基金项目
渭南师范学院重点科研项目(编号:10YKF012) （编号:10YKF012）
渭南师范学院研究生专项基金(编号:10YKZ069) （编号:10YKZ069）
渭南师范学院科研计划项目(编号:11YKS015)资助. （编号:11YKS015）
