摘要
改变以往行移变化隐藏信息的方式,利用正弦函数的周期性特点,自适应的嵌入水印信息;在水印提取中不用参考原始文本就可以提取水印信息,从而实现水印的盲提取。隐藏的数据在经过高质量的打印和扫描后,可以提取出相应的数据信息。这种嵌入提取方法可以用来检测那些未授权的人使用这些数字签名或鉴别二值图像的版权。本文还分析和讨论了有关鲁棒性和安全性问题。
This paper proposes a new method by using periodicity of sinusoid and embedded watermark information adaptive different from shifting slightly certain lines before.Watermark information can be extracted without original text documents.The hidden data can be extracted after high quality printing and scanning.The proposed data embedding method can be used to detect unauthorized use of a digitized signature,or authenticate binary documents.The paper also presents analysis and discussions on robustness and security issues.
出处
《现代电子技术》
2005年第13期40-42,共3页
Modern Electronics Technique
