针对三维动画中关键帧数据的数字水印算法

摘要

提出一种针对三维动画中关键帧数据的数字水印算法.算法中水印的嵌入对象是运动对象的运动坐标,将运动坐标形成一个方阵,将具有惟一性的水印信息嵌入到方阵的特征向量的特定元素中,形成含有水印的动画.当动画的版权出现争议时,利用提取算法从动画中提取出水印,以证明版权.通过仿真实验表明,该算法的隐蔽性、抗攻击性较好,可以推广到其他形式或用其他软件制作的CG作品中.%A digital watermarking algorithm for key frame data in 3D animation is put forward,whose embedded object is the motion coordinates of moving object. The motion coordinates are formed into a square matrix. The unique watermarking infor-mation is embedded into the specific element of feature vector of the square matrix to form the new animation with watermark. When the copyright of an animation is disputed,the extraction algorithm is used to extract the watermark in the animation to prove its copyright. The results of simulation experiments show this algorithm has perfect concealment and high anti-attacking performance,and can be applied to CG works in other forms or produced with other softwares.