基于混沌映射小波域脆弱数字水印算法混沌映射小波域脆弱数字水印算法-word文档网

内容摘要······································2

引言············································3

1.混沌映射理论··················3

2. 水印生成和嵌入算法

2.1 基于离散小波变换的水印生成算法················4

2.2水印嵌入算法··································5

3. 水印信息的提取和篡改检测·······················5

4.实验结果········································7

4.1 水印不可见性··································8

4.2 对于篡改的脆弱性······························8

参考文献·······································9

内容摘要

摘要：随着多媒体技术研究的发展，数字水印技术已经成为图像研究的热点领域之一。结合小波变换技术，提出一种新的脆弱水印算法，为了提高该算法的安全性，在生成水印信息和检测水印时映射到每个小波系数，并运用混沌理论，在提取水印时实现盲检测。实验表明本方法在保证水印不可见的同时，能精确验证出图像数据中每个像素点的变化，具有良好的验证功能。