利用三维动画骨骼数据的数字水印算法  

DIGITAL WATERMARKING ALGORITHM BASED ON 3D ANIMATION SKELETON DATA

作　　者：李亚琴[1] 方立刚[1] 廖黎莉[1,2] 杨元峰[1] Li Yaqin;Fang Ligang;Liao Lili;Yang Yuanfeng(Jiangsu Province Support Software Engineering R&D Center for Modern Information Technology Application in Enterprise,Suzhou 215104,Jiangsu,China;Soochow University,Suzhou 215104,Jiangsu,China)

机构地区：[1]江苏省现代企业信息化应用支撑软件工程技术研发中心,江苏苏州215104 [2]苏州大学,江苏苏州215104

出　　处：《计算机应用与软件》2020年第5期123-126,139,共5页Computer Applications and Software

基　　金：国家自然科学基金项目(41201338);2017年度苏州市产业技术创新专项(SYG201710);苏州市职业大学“青蓝工程”项目;2018江苏省“青蓝工程”优秀教学团队项目。

摘　　要：提出一种基于三维动画的数字水印算法。将动画中的骨骼数据作为嵌入水印的载体,收集的骨骼数据组成一个矩阵,对矩阵进行Householder变换和Schur变换,把动画作品的有效身份信息添加到变换得到的特征向量中从而完成水印的嵌入。动画角色的骨骼主要用于完成角色的动作,所以嵌入水印后不会影响动画的画面质量和播放效果。利用嵌入算法的逆过程完成水印的提取。实验证明,该算法具有很好的隐蔽性、抗攻击性,简单可行,可以有效地保护三维动画的版权。This paper proposes a digital watermarking algorithm based on the 3D animation.Skeleton data in the animation was used as the carrier for embedding the watermark,and the skeleton data was collected to form a matrix,which was transformed by Householder transformation and Schur transformation.Effective identity information of the animation work was added to the transformed feature vector to complete the watermark embedding.The skeleton of the animated character was mainly used to complete the action of the character,so the embedded watermark would not affect the image quality and playing effect of the animation.The extraction of watermark was accomplished by the inverse process of embedding algorithm.The experiment proves that the algorithm has good concealment,anti-aggression,and it is simple,feasible and can effectively protect the copyright of 3D animation.

关 键 词：版权保护 数字水印 三维动画 骨骼数据 Householder变换 Schur变换 鲁棒性 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]