摘要
针对不可见数字水印的隐藏问题,依据Arnold变换和小波分析理论,提出了一种基于小波变换的数字水印算法,即先对水印图像进行置乱预处理,对置乱后水印图像和嵌入对象图像分别进行小波变换,并根据频带重要性排序,将水印对应嵌入.实验证明,嵌入后水印不可见性好,提取时安全性高,是一种有效的隐藏方案.
In this paper, a watermarking algorithm based on Arnold scrambling and wavelet Analysis is proposed in wavelet domain for invisible watermarking' s hiding problem. In this algorithm, the watermarking is firstly preprocessed with Arnold scrambling, then, the scrambled watermarking and original images are both transformed into the discrete wavelet domain before they emerged together according to the importance of frequency band. What's more, experimental results have proved that the invisibility is good and the security is high. Thus, it is an effective algorithm.
出处
《哈尔滨理工大学学报》
CAS
2004年第5期66-69,共4页
Journal of Harbin University of Science and Technology
基金
黑龙江省自然科学基金资助(F01-22)
黑龙江省教育厅科学技术研究项目(10811111)
