关于数字图像的水印技术

随着多媒体技术和网络技术的广泛应用，对图像、音频、视频等多媒体内容的保护成为迫切需要解决的问题。数字水印技术是目前信息安全领域的一个新方向，是一种可以在开放的网络环境下保护版权和认证来源及完整性的新技术。本文在介绍了数字水印的基本要求的同时，给出了系统的框架，以及数字水印的原理和目前主要的应用领域，并探讨了数字水印的特点及其所受到的各种攻击方式，给出了典型算法，研究水印的嵌入、提取和检测并给出了模型，最后给出数字水印的研究方向。

A Survey of Digital Image Watermarking

With the widely application of computer and multimedia technology ,protection of image ,video ,audio and authentication become more and more urgent. Digital watermark is a new direction in the information security filed,it is a new technology that can protect copyright and authentication source. The paper introduces its basic requirements and the system frame work, the research status of digital watermarking techniques is analyzed, with the cloud digital watermarking techniques depicted simply. The characters and the ways of attack are discussed,also gives the representative algorithm and proposes possible directions for further research.