基于离散余弦变换和边缘检测的图像水印技术  

Image Watermarking Technique Based on the DCT Transform and the Edge Detection

作　　者：粟伟峰[1] 杨小帆[1] 柏森[2] 赵利军[1] 罗高文[1] 

机构地区：[1]重庆大学计算机学院,重庆400030 [2]重庆通信学院研究生管理大队,重庆400035

出　　处：《重庆大学学报（自然科学版）》2004年第12期78-81,共4页Journal of Chongqing University

基　　金：重庆市应用基础研究基金项目资助(8028)

摘　　要：作为信息隐藏在计算机多媒体领域的一个重要应用,数字水印技术使得人们能够在多媒体信息(如图像、声音、视频)中嵌入不可见的信息(水印)。数字水印技术为多媒体版权保护提供了一个崭新的方法,近年来在国际上引起了人们极大的兴趣和注意,得到广泛的研究和应用。将离散余弦变换与图像边缘检测技术相结合,提出一种新的图像水印方法。实验表明,与传统Cox方法相比,这种方法在降低原始图像视觉失真和经攻击后水印图像失真两方面都达到较好的效果。As a main application of information hiding technique to multimedia copyright protection, the digital watermarking technique, which embeds an invisible signal (watermark) to the original multimedia data (image, audio, and video), has been proposed as a viable solution for the copyright protection and authentication of multimedia data in a networked environment since it makes it possible to identify the author, owner, distributor or authorized consumer of multimedia data. So it has drawn extensive attention in recent years and has been widely applied. A new image watermarking scheme is proposed by incorporating the DCT transform and an edge detection technique. Experimental results show that this method is more robust against the common signal processing attacks than the traditional Cox's method.

关 键 词：数字水印 离散余弦变换 边缘检测 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]