CAJ | 학술논문

随着计算机和网络技术的飞速发展，数字图像、音频和视频产品愈来愈需要一种有效的版权保护方法，另外通信系统在网络环境下的信息安全问题也日益显露出来.数字图像水印技术为上述问题提供了一个潜在的解决方案.所谓水印技术就是将数字、序列号、文字、图像标志等版权信息嵌入到多媒体数据中，以起到版权保护、秘密通信、数据文件的真伪鉴别和产品标志等作用.本文提出了一种新的基于奇异值分解的数字水印算法并且对该方法的理论基础给出分析.实验结果表明这种方法要比目前提出的流行算法鲁棒.
수착계산궤화망락기술적비속발전，수자도상、음빈화시빈산품유래유수요일충유효적판권보호방법，령외통신계통재망락배경하적신식안전문제야일익현로출래.수자도상수인기술위상술문제제공료일개잠재적해결방안.소위수인기술취시장수자、서렬호、문자、도상표지등판권신식감입도다매체수거중，이기도판권보호、비밀통신、수거문건적진위감별화산품표지등작용.본문제출료일충신적기우기이치분해적수자수인산법병차대해방법적이론기출급출분석.실험결과표명저충방법요비목전제출적류행산법로봉.
The advent of the Internet and the wide availability ofcomputers,scanners and printers make digital data acquisition,exchange and transmission a simple task.However,making digital data accessible to others through networks also creates opportunities for malicious parties to make salable copies of copyrighted content without permission of the content owner.Digital watermarking is likely to be a potential solution to this problem.Digital watermarking has been proposed as a solution to the problem of copyright protection of multimedia documents in networked environments.It makes possible to embed a watermark(such as identification data,serials number,text or image etc.)to multimedia documents allowing copyright protection,secret communication,document authentication and so on.In this paper,we present a new digital image watermarking method based on SVD(Singular Value Decomposition),and then give some theoretical analysis about the algorithm.Extensive experimental results show that this method is much more robust than other methods presented before.