數字水印是數字產品產權保護的技術，是當前國際學術界研究的熱點問題之一，它包
括算法設計和攻擊技術兩方面，作為矛和盾的雙方，既互相對立又相互促進，而當前的水印方案大都采用傳統的攻擊手段檢驗其魯棒性，對攻擊的研究較少。本文從理論上提出了一種基于盲信號分離技術的水印攻擊方法，描述了其技術特點，并建立了相應的應用模型，可以推斷，新方法的使用會對改進水印算法和水印檢測的研究起到良好的作用。
關鍵詞：數字水印盲信號分離水印攻擊 魯棒性

Abstract:Much attention has been paid to digital watermark which is used to protect the property f data products .Technically, algorithm model and attack pattern are necessary in watermark esigning,these two parts restrain and promot each other.Generally,conventional attack patterns re chosen to test watermark,however,it is turely helpful for watermark to experience with more ttacks to gain the real robustness.This paper proposed a new approach to watermark attack which s based on the blind signal separation,we described its characteristics and put up a applicable odel ,all these may have a good effect on the watermark studies henceforth .
Keywords:digital watermark blind signal separation watermark attacks and robustness