【摘要】 文章针对三维模型提出了一种稳健的三角网格数字水印算法,通过修改从模型中心到各顶点的向量长度来嵌入数字水印。该算法具有如下特点:以全局几何特征作为嵌入对象;将一比特的水印信息分布到整个模型之中;水印的嵌入强度自适应于模型的局部特征。实验结果表明该水印算法能抵抗网格简化攻击,噪声攻击,剪切攻击,以及它们的混合攻击,具有很高的稳健性。更多还原

【Abstract】 In this paper the authors propose a robust3D model watermarking scheme for triangle meshes.The approach embeds watermark information by modifying the length of the vectors that link vertices to the centre of the model.Particularly,the approach is able distribute information corresponds to a bit of the watermark over the entire model,the embedding primitive is a global character and the strength of the watermark signal is adaptive with respect to the local geometry of the model.Experiments show that this watermarking scheme is robust against attacks such as mesh simplification,addition of noise,model cropping and combined attacks.更多还原