基于置乱变换的多重数字水印盲算法

提出了一种新的基于置乱变换的多重数字水印盲算法。该算法具有以下性能：(1)可嵌入多重水印，标志不同所有者（如创作者、发行者、使用者等）版权使用的合法信息；(2)水印的隐藏效果好，多重水印的嵌入不会造成视觉质量的严重下降；(3)水印的嵌入和提取过程中需要个人密钥，不知道密钥的非法使用者无法正确提取水印；(4)水印的嵌入位置只依赖于密钥，与算法无关，非法用户无法知道水印的嵌入位置；(5)水印的提取无需原始图像和原始水印；(6)可以抵抗LSB攻击和剪切攻击。

Multi-blind Digital Watermark Algorithm Based on Scrambling

This paper proposes a new kind of multi-blind digital watermark algorithm based on image scrambling.The features of presented algorithm to embed the watermark are:(1)Multiple watermarks can be embedded to mark different owners;(2)The difference between the watermarked image and the original image is perceptually invisible;(3)Using a secret key in the procession of embedding and extracting the watermarks;(4)The position of embedding only depends on the secret key;(5)Extracting of the embedded watermarks do not need the original image and original watermarks;(6)The watermarks are robust against LSB and crop attack.