一种双重图像标志水印算法  

Dual Image Logo Watermarking Algorithm

作　　者：陈博[1] 沈鸿[1,2] 

机构地区：[1]中国科学技术大学计算机科学与技术学院,合肥230027 [2]北京交通大学计算机与信息技术学院,北京100044

出　　处：《小型微型计算机系统》2012年第8期1805-1810,共6页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(60772034)资助

摘　　要：数字水印作为一种版权保护、内容验证和隐蔽通信等的有效手段,已经被研究了多年,而且近年来吸引了越来越多的关注.针对目前图像水印算法中存在的空间利用率低,功能单一的问题,本文提出一种双重图像水印算法同时实现了对图像的版权保护和内容验证.增加了水印功能并提高了图像水印空间利用率.实验结果显示我们扩展得的多重水印算法比现有的多重水印算法具有更高的峰值信噪比(PSNR)并且保持了相同的鲁棒性,同时比原单重水印更加敏感.Watermarking as a powerful technique for copyright protection,content verification,covert communication and so on,has been studied for years,and is drawing more and more attention recently.For low space utilization and single function issues in traditional image watermarking algorithms,this paper proposes a dual image logo watermarking to achieve both copyright protection and content verification,which adds watermarking features and improves the space utilization.Experimental results show that the resulting dual watermarking algorithms have significantly higher PSNR than existing dual watermarking algorithms and also retain the same robustness and higher sensitivity than the original single watermarking algorithms they are based on.

关 键 词：双重水印 鲁棒性 易碎性 小波变换 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]