鲁棒水印算法研究

数字水印技术是解决数字媒体版权保护的有效方法。对数字图像水印算法进行研究,探索提高数字水印性能的方法,提出了一种基于Arnold变换加密的数字水印新算法。利用Arnold变换对图像水印进行置乱,不但提高了水印信息安全性而且提高了其抗攻击性;结合人类视觉系统(HVS)的特性和数字图像常规处理特点,对水印在原始宿主图像DCT域中的嵌入位置进行选择,利用扩频原理实现水印的嵌入。仿真实验结果证明了该算法的有效性和鲁棒性。

Research for Robust Watermarking Algorithm

Digital watermarking techniques have been considered as an effective solution to protecting the copyright of multimedia products.To get a advanced performance digital watermarking,a algorithm of digital watermarking is researched.In this paper,a new robust digital image watermarking algorithm based on Arnold transformation is proposed.At first,the watermarking image is scrambled by Arnold transformation to improve the security and robustness of watermarking.Then,by exploiting Human Visual System(HVS) and characteristic of digital image processing,watermark is embedded into the specific DCT coefficients of the original image.The experimental results show that the algorithm is effective and robust.