High-capacity blind digital watermarking technology based on curvelet transform
Liu Qingjie · Computer Engineering and Applications Journal · 2010
The basic principles of curvelet transform are described and human visual model based on curvelet transform for optimizing the robustness of watermarking technology is given.In addition,the EMD algorithm with unique and efficient embedding approach which can be used to keep great balance between the robustness and transparency of watermarking is adopted for improving the capacity of watermarks.The proposed algorithm can not only effectively deal with all types of conventional signal processing attacks,but also can prevent most of the malicious attacks on watermarks.Furthermore,as a result of the characteristics of curvelet transform,extracting and detecting processes in this algorithm do not require participation of the original watermark and the original images.It is an utterly blind watermarking algorithm.Finally,experimental results prove that the algorithm is improved markedly compared to some other robust watermarking methods based on transform domains.