The Anti-geometric Attack Digital Watermarking Algorithm Based on Image Normalization of Local Information
Objective: On the issues of the insufficient embedding capacity of most existing anti-geometric attack watermark algorithms,and the disability to shear attacks,an algorithm using lo-cal information which based on image normalization and Gaussian-Hermite invariant moments is proposed.Method: In this algorithm,a local area selection strategy based on integrity authentication is presented to achieve exact area matching before and after the attacks;then,on the basis of the good geometric stability of Gaussian-Hermite invariant moments characteristic matrix is structured,through which the watermark embedding and extraction is realized.In order to expand embedding capacity,an improved local normalization strategy is put forward on the combination of local area selection and normalization.Result: Experiments show that our algorithm has good robustness against rotating,translation,scaling and can resist shear attacks up to a certain degree.
Digital watermarking geometric attack Local information integrity Invariant centroid Gaussian-Hermite moment
Jia Xiaolin Yang Zhou Qi Yanli Shao Liping
School of Electronic and Information Engineering,Xian Jiaotong University Xian,China School of Computer Science,Shaanxi Normal University,Xian,China
国际会议
重庆
英文
1120-1124
2016-03-20（万方平台首次上网日期，不代表论文的发表时间）