摘要
可逆数字水印是数字水印领域一个新兴且重要的分支,由于其原始宿主内容可无损恢复的特点,在一些重要的媒质如医学军事等相关的多媒体信息中得到广泛应用。目前,人们在可逆数字水印领域的研究已取得了一些成果,大致可分为空间域方法和变换域方法两大类。通过对这两大类方法中的经典算法介绍和优缺点分析,阐明了目前可逆水印研究领域的发展现状,并在此基础上对该领域的发展趋势做出展望。
Reversible watermarking is a new branch of digital watermarking field. For its feature that the content in the host could be recovered without any loss, it receives extensive applications in medical and military images. The algorithms in this field fall into two categories： special and transform domain methods. Through presentation of the classical algorithms in these two categories, the development state of this field is displayed and the future research direction is pointed out.
出处
《信息安全与通信保密》
2012年第3期82-83,共2页
Information Security and Communications Privacy
关键词
可逆数字水印
差值扩展
直方图位移
reversible watermarking
difference expansion
histogram shift
