SYNCHRONIZATION RECOVERY SCHEME IN WATERMARKING DETECTION  

作　　者：Xiao Weiwei Zhang Li Ji Zhen Zhang Jihong (FacuJty of In form ation Engineering, Shenzhen University, Shenzhen 518060) 

出　　处：《Journal of Electronics(China)》2003年第5期393-396,共4页电子科学学刊（英文版）

基　　金：the National Natural Science Foundation of China (No.60172065)

摘　　要：Most proposed digital watermarking algorithms are sensitive to geometric attacksbecause the synchronization information of watermark embedding and detection is destroyed. Inthis letter a novel synchronization recovery scheme based on image normalization is proposed. Thepresented scheme does not require the original image and can be applied to various watermarksystems. A wavelet-based watermarking scheme is proposed as an example and experimentalresults show that it is robust to geometric attacks.Most proposed digital watermarking algorithms are sensitive to geometric attacks because the synchronization information of watermark embedding and detection is destroyed. In this letter a novel synchronization recovery scheme based on image normalization is proposed. The presented scheme does not require the original image and can be applied to various watermark systems. A wavelet-based watermarking scheme is proposed as an example and experimental results show that it is robust to geometric attacks.

关 键 词：Digital watermarking Geometric attacks Synchronization recovery Image normalization 

分 类 号：TN911.73[电子电信—通信与信息系统]