利用图像局部特征区域的抗几何攻击水印算法  

Geometric resistant image watermarking algorithm based on local feature regions

作　　者：邓成[1] 高新波[1] 范科峰[2] 周芳[1] 

机构地区：[1]西安电子科技大学电子工程学院 [2]中国电子技术标准化研究所,北京100007

出　　处：《西安电子科技大学学报》2008年第4期707-711,共5页Journal of Xidian University

基　　金：新世纪优秀人才支持计划资助(NCET-04-0948);教育部长江学者和创新团队支持计划(IRT0645);国家自然科学基金(60672112)

摘　　要：提出了一种新的抗几何攻击的数字水印算法.该算法利用仿射不变点检测器提取特征点,根据特征点构造仿射不变区域作为水印嵌入区域;嵌入时采用了一种新的模糊推理机制自适应调整嵌入强度.大量的攻击实验证明了所提算法的有效性,实验结果表明该算法对一般信号处理、旋转、缩放、剪切和其他仿射变换具有显著的鲁棒性.A new digital watermarking method resistant to geometric attacks is proposed, in which the feature points are extracted by an affine-invariant point detector, and then watermarks are embedded into the affine invariant regions centered at these feature points. For further procedure, a novel FIS （Fuzzy Inference System） is employed to adaptively adjust the embedding strength in those regions. The validity of the method is confirmed by a number of experiments. Simulation results confirm the robustness of our proposed method to different attacks, such as common image processing, rotation, scaling, cropping, and several other affine transformations.

关 键 词：数字水印 几何攻击 仿射不变区域 模糊推理 

分 类 号：TN391.4[电子电信—物理电子学]