通过改变文字大小在Word文档中加载数字水印的设计与实现

A Digital Watermarking based on Changing the Size of Character in the Word

针对多媒体数字作品的版权保护,传统的加密方法具有一定的局限性,数字水印作为信息隐藏技术的一个分支正逐渐成为实现数字产品版权保护的最后一道屏障。文章提出了一种新的文本数字水印嵌入及检测算法:根据特征编码思想,针对Word文档格式特点,通过改变文档中某些字的大小以嵌入和检测水印。实验结果表明:该算法很好的实现了水印的嵌入和检测,并对传统攻击有着较好的鲁棒性。

For copyright protection of digital multimedia works,there are some limitations in traditional cryptography.So,watermarking,as a branch of information hiding,is becoming the last barrier of realizing the copyright protection of digital works based on the actuality,the paper puts forward a new method of embedding and detecting algorithm watermarking of text:changing the size of some words is basis of feature coding idea and Word's format.The results suggest:the algorithm achieves the goal of embedding and detecting of watermarking,furthermore,the algorithm has good robustness in counteracting traditional attacks.