CAJ | 학술논문

为了达到版权保护的目的，提出一种Contourlet变换与生命游戏置乱相结合的视频零水印，Contourlet被誉为处理二维信号的最优解，算法利用其优势对关键帧处理得到低频系数，再经过核心算法处理，最后结合生命游戏规则生成特征图像，并运用加密算法对水印进行预处理以加强安全性。实验结果表明本算法较好地折中了数字水印的不可见性和鲁棒性，并能有效地抵抗常见的几何攻击和视频攻击。
위료체도판권보호적목적，제출일충Contourlet변환여생명유희치란상결합적시빈령수인，Contourlet피예위처리이유신호적최우해，산법이용기우세대관건정처리득도저빈계수，재경과핵심산법처리，최후결합생명유희규칙생성특정도상，병운용가밀산법대수인진행예처리이가강안전성。실험결과표명본산법교호지절중료수자수인적불가견성화로봉성，병능유효지저항상견적궤하공격화시빈공격。
In order to achieve the purpose of copyright protection , this paper proposes a video zero-watermark algorithm based on the combination of the life game scrambling with Contourlet transform , which has been known as the optimal solution of two-di-mensional signal processing .The algorithm uses the advantage of Contourlet to process the key frame and gets the low -frequency coefficients, then combines the rules of the life game to generate feature image with core algorithm , and uses encryption algorithm to make pretreatment for watermark in order to enhance security .Experimental results show that the algorithm is a good compro-mise between invisibility and robustness , and can effectively resist the common geometric attacks and video attacks .