摘要
为了提高三维模型非盲数字水印算法对抗高强度攻击及联合攻击的鲁棒性,提出一种构造顶点分布特征的三维模型数字水印算法.该算法融合零水印和嵌入式水印算法的思想,利用顶点范数的取值分布建立顶点分布特征;然后基于顶点分布特征构造数字水印,并由此水印强化这一特征,使数字水印与三维模型特征彼此契合、更加稳定.实验结果表明,文中算法能有效地抵抗平移、旋转、均匀缩放、顶点重排序、噪声、简化、剪切、量化、平滑和细分等常见攻击,对联合攻击也有较强的抵抗能力.
To improve the robustness of non-blind watermarking scheme against the attacks with high intensity and combination attacks, a novel watermarking scheme for three-dimensional models is proposed by constructing vertex distribution characteristics. Integrating the two ideas of zero watermarking and embedding watermarking, the scheme makes use of vertex norms to construct vertex distribution characteristics. Then based on these characteristics watermark is generated. The vertex distribution characteristics are strengthened according to the watermark inversely, which makes watermark and geometric characteristics of three-dimensional model fitted with each other and more stable. Experimental results show that the scheme proposed in this paper can effectively resist the common attacks including translation, rotation, uniform scaling, vertex re-ordering, noise, simplification, cropping, quantization, smoothing and subdivision, as well as combination attacks.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2014年第2期272-279,共8页
Journal of Computer-Aided Design & Computer Graphics
基金
教育部博士点基金(20113227110021)
江苏省研究生科研创新计划资助项目(CX10B_273Z)
关键词
数字水印
三维模型
版权保护
几何特征
digital watermark
three-dimensional model
copyright protection
geometric characteristic
