摘要
数字水印是实现数字产品版权保护的有效办法,本文在离散余弦变换域内对数字图像的隐蔽嵌入和提取算法进行了研究,实现了基于DCT中频的二维水印嵌入与盲提取算法,该算法以模运算为基础,实验结果表明,该算法针对图像压缩和噪声等攻击具有较好的鲁棒性。
Digital watermarking is an effective method in the copyright protection of digital products.With research work on secret image embedding and extracting technology based on DCT algorithm,this paper puts forward an image watermark embedding and checking technology.In this approach,the 2D watermarks are embedded into the DCT middle frequency with modular arithmetic.The experimental results show that this technology meets the demand of robustness under the attack of compress and noise.
出处
《计算机与现代化》
2004年第10期114-116,共3页
Computer and Modernization
关键词
数字水印
模运算
嵌入算法
盲提取算法
digital watermark
modular arithmetic
embedding algorithm
extracting algorithm
