摘要
提出了一种改进的非嵌入式的鲁棒的数字水印算法。该算法放弃了将水印嵌入到原始图像中的传统做法,而是利用水印信息和原始图像特征生成密钥,并将密钥交由第三方管理,以此作为版权保护的凭证。为了进一步提高算法的鲁棒性,对特征提取的算法作了改进,并采用了灰度图像作为水印标识,实验证明这种非嵌入式的水印算法,一方面使得图像的不可见性得到了完美的满足,另一方面能够抵抗多种攻击,诸如:压缩、加噪、模糊化、剪切。因此,此算法是可行而且有效的。
In this paper,an improved non-embedding watermarking algorithm was proposed.Instead of embedding watermark into source image as in traditional ways,we used watermark information and the source image feature to generate a standard key and handed over it to a third party to manage as the certificate of copyright and ownership.For further improving the robustness of the algorithm,we ameliorated the feature-extraction algorithm and adopted the gray-scale image as watermarking sign.Experiments showed that with this non-embedded watermarking algorithm,the imperceptivity of the image is perfectly satisfied,the proposed algorithm is also highly robust to various attacks,including JPEG compression,additive noise,blurring and cropping.So it is feasible and valid.
出处
《计算机应用与软件》
CSCD
2010年第7期52-54,共3页
Computer Applications and Software
基金
国家高技术研究发展计划(2003AA148040)
关键词
数字水印
非嵌入式
鲁棒性
小波分析
Digital watermarking Non-embedding Robust Wavelet analysis
