变换域数字水印处理技术

Transform domain digital watermark disposal technology

数字水印是信息安全领域的一项新技术,给出了相对明确的定义。着重分析了变换域数字水印系统的特征及常见攻击,给出了一些相应的对策。最后指出变换域水印的重要问题,即频率的选择问题。

Watermarking is a new technique for information security. In this paper, we give a relative unambiguous definition of digital watermark. Characters and common attacks of transform domain digital watermark system were analyzed on emphasis. And we give some corresponding countermeasures. At last, we point out the most important problem of transform domain digital watermark,namely the problem of frequency choice.