摘要
为了使水印具有更强的鲁棒性和更好的不可见性,本文提出一种基于小波变换的盲检测数字水印算法。基于多分辨率分解技术,首先利用Arnold置乱对水印进行加密,增强水印系统的安全性,然后结合人类视觉系统在小波高一级变换中选取嵌入位置,并通过对系数的改变实现水印的嵌入。实验结果表明,该算法有较好的不可见性,对一些常见的图像攻击操作也有较强的鲁棒性。
To enhance the watermark more powerful robustness and a better invisibleness,a blind digital watermark algorithm based on wavelet transform is proposed.By multiresolution decomposition technique,the watermark is encrypted by Arnold scratch in order to enhance the security of watermark system.And then comparing HVS,embedded location which were in the higher transforming of DWT are elected,and watermark is embedded by changing transforming coefficients.According to the experiment result,this scheme is invisible and has good robustness for some common image attacking operations.
出处
《计算机与现代化》
2010年第9期107-110,114,共5页
Computer and Modernization
关键词
小波变换
数字水印
多分辨率分解
wavelet transform
digital watermark
multiresolution decomposition
