摘要
数字媒体版权保护已经变得十分迫切和必要,有效的盗版确认方法是实现版权保护的前提。文章实现了一种基于余弦变换和小波变换相结合的数字水印算法,数值仿真表明该算法较好保持了图像的质量,并且对常用的图像处理方法有较强的稳健性,是一种能抵抗多种攻击的较稳健的水印算法。
The copyright protection of digital multimedia has become an impending issue. The effective pirate validation of the digital multimedia is the precondition for effective copyright protection. The paper briefly analyzes the algorithm of watermarking based on the discrete wavelet transform and the discrete cosine transform. The experimental results show that the algorithm can assure good imperceptibility for watermark image and the watermark embedded using the algorithm has good robustness against the attacks such as JPEG compression and noise addition.
出处
《信息工程大学学报》
2006年第3期287-288,308,共3页
Journal of Information Engineering University
