摘要
根据CL多小波的特点,提出了一种把视觉系统掩蔽特性结合到水印编码过程中的基于CL多小波域的自适应数字水印算法.首先利用小波系数的树结构关系对最低分辨率子图像的第一分量进行分类,然后根据分类的结果将不同强度的水印分量嵌入到这些小波系数中.实验结果表明,该水印系统具有良好的透明性和鲁棒性.
According to the characteristics of CL multi-wavelet and the feature of visual masking of human vision system, an adaptive digital watermarking algorithm based on CL multi-wavelet domain is proposed in this paper. Using the tree structure relation of wavelet coefficients, the first component coefficients of the lowest resolution sub-image are classified into two groups. Based on the results of classification, watermark components with different strength are embedded into these wavelet coefficients. Experimental results indicate that the performance of the proposed watermarking is invisible and robust.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
2004年第z1期55-59,共5页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省教育厅科研资助项目(K99029)
关键词
数字水印
CL多小波
鲁棒性
视觉掩蔽
算法
digital watermarking
CL multi-wavelet
robustness
visual masking
algorithm
