数字水印技术综述

数字水印作为一种将特殊信息嵌入媒体数据的技术，近年来已成为国内外研究的热点并有着广泛的应用前景．通常数字水印被应用于数字图像、音频、视频以及其他媒体产品上以进行版权保护和验证多媒体数据的完整性．首先介绍了数字水印技术的特点和应用领域，并对其基本原理和评价标准进行了阐述，同时对数字水印的各种算法进行了分类研究与深入分析，并对不同算法进行了安全性与性能的横向比较，最后指出了数字水印今后的研究方向．

A Survey of Digital Watermarking

Digital watermarking, the technology of embedding special information into multimedia data, is a topic that has recently gained increasing attention all over the world. The watermark of digital images, audio, video, and other media products in general has been proposed for resolving copyright ownership and verifying the integrity of content. The characteristics and applications of watermark techniques are first introduced, and then the basic concepts and evaluation criteria are expatiated. For further understanding, the watermark techniques from the various aspects are classified and some conventional watermark techniques and algorithms are analyzed in detail. At the same time, their security and performance are compared. Finally, the possible research direction of digital watermark technology are pointed out.