摘要
提出了一种基于Spin-Image的鲁棒水印算法。首先通过Spin-Image变换,提取出网格模型的全局几何特征,同时实现几何数据的二维参数化,然后利用K-L变换对Spin-Image映射的方阵进行降维,保留其主要特征,并利用小波域低频系数构造出用于注册的水印。实验结果表明,该算法很好地平衡了水印鲁棒性和透明性之间的矛盾,而且对常见的水印攻击手段,如平滑、加噪、剪切、网格简化等具有较好的鲁棒性。
A robust watermarking algorithm of 3D model based Spin-Image was proposed. Spin-Image was used to extract the global feature of 3D model, and realize 2D pararneterization. And then K-L was applied to reduee these spin images＇ dimensions, and based on the resulting coefficients, watermarking was ealculated. The experimental results show that, the algorithm well deals with the contradiction of watermarking robustness with transparency, and has good robustness against common attacks, such as smoothing, noise addition, cropping, remeshing and so on.
出处
《计算机科学》
CSCD
北大核心
2009年第6期262-264,F0003,共4页
Computer Science
基金
内蒙古自然科学基金(200711020819)资助
