AN IMPROVED WATERMARKING ALGORITHM BASED ON CWT
In this paper a new watermarking algorithm in the complex wavelet domain is presented.It shows why complex wavelets are better than real wavelets.It improved the embedding scheme by selecting the embedding channels and using the visual masking of HVS.Then the method adapted the watermark to the local image activity.To compare the proposed algorithm in CWT domain with equivalent one derived in the DWT domain,the same embedding procedure is applied in DWT domain.Robustness of both algorithms on selected attacks like JPEG,JPEG2000 compressions,different filtering attack.etc.is tested and compared by using the benchmark software checkmark.The experiment results showed the algorithm improved the redundancy of the algorithm,it also strengthen the method robustness feature.
Complex wavelets transform redundancy robust algorithm watermarking
HU Aina
School of Information project,HUANGHE S&T COLLEGE,ZhengZhou 450000
国内会议
厦门
英文
213-217
2006-07-25（万方平台首次上网日期，不代表论文的发表时间）