摘要
数字水印技术广泛应用于数字媒体的版权保护.本文提出了一种基于混沌特性的DCT域的二值图像数字水印算法.该算法将含有版权信息的二值图像水印用混沌序列进行加密,把水印分量嵌入到不同图像块DCT中频系数中.通过加入高斯噪声、椒盐噪声以及JPEG压缩和剪切处理等大量试验,结果表明该算法具有很好的稳健性.
Digital watermarking technology is widely used in digital media copyright protection. In this paper, a chaotic encrypted image digital watermarking algorithm based on DCT is presented. We encrypt image watermark by a chaotic sequence cipher before it is embedded into original images. In the algorithm, the original image is split into blocks; watermarking components are inserted into the Mid-frequency coefficients of DCT domain. The experimental results show the watermarks are robust againstGaussian noise, salt ＆ pepper noise, JPEG, crop procession, etc.
出处
《衡水学院学报》
2010年第1期33-35,共3页
Journal of Hengshui University
基金
安徽省高校青年教师资助项目课题(2008jq1141)
关键词
混沌序列
数字水印
DCT
chaotic sequence
digital watermarking
DCT
