遗传算法在三维网格模型数字水印中的应用

在数字水印的研究中,为保护版权信息特性,提高精确性和抗噪能力,提出了一种遗传算法的三维网格模型变换域盲水印算法。先将三维模型转化为二维数值矩阵,然后进行二维分块DCT变换生成系数矩阵,利用遗传算法寻找满足适应度函数的最佳嵌入系数,适应度函数使嵌入水印后的模型变形最小。并要嵌入矩阵的位置信息及相应的DCT系数,进行仿真。结果表明,算法可抵抗平移、旋转、各向一致缩放攻击、顶点重排序攻击、噪声攻击。证明对简化方法具有一定的鲁棒性,为设计提供参考。

Application of Genetic Algorithm in 3D Mesh Model Digital Watermark.

The article proposes a blind watermark algorithm of 3D mesh model in transform domain based on genetic algorithm.The algorithm transforms the 3D model into a 2D numeric matrix,generates DCT coefficients using block DCT transform and finds the best DCT frequency coefficients by evaluating the fitness function using genetic algorithm.The fitness function makes the model distortion minimized after embedding the watermark.The position information of embedding watermark in the 2D numeric matrix and its DCT coeff...