| 一种基于3D 网格分割的数字水印算法 |
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| 引用本文： | 唐宝,秦茂玲,王珍珍.一种基于3D 网格分割的数字水印算法[J].山东师范大学学报(自然科学版),2014(1):26-28. |
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| 作者姓名： | 唐宝 秦茂玲 王珍珍 |
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| 作者单位： | [1]山东师范大学信息科学与工程学院,济南250014 [2]山东省分布式计算机软件新技术重点实验室,济南250014 |
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| 摘 要： | 为了提高三维模型数字水印的不可感知性，笔者提出了一种基于3D 网格分割的数字水印算法。该方法首先对三维网格模型分割，得到若干有意义的子网格。然后计算每个子网格的频域系数矩阵，将相同的水印信息添加到系数矩阵中，得到带有水印的顶点矩阵，从而获得带有水印的网格模型。实验结果表明：本算法对多种攻击具有鲁棒性，同时嵌入的水印具有不可见性，从而保持了模型良好的视觉效果。
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| 关 键 词： | 三维数字水印 网格分割 频域系数 鲁棒性 |
A DIGITAL WATERMARKING ALGORITHM BASED ON 3D MESH SEGMENTATION |
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| Tang Bao,Qin Maoling,Wang Zhenzhen.A DIGITAL WATERMARKING ALGORITHM BASED ON 3D MESH SEGMENTATION[J].Journal of Shandong Normal University(Natural Science),2014(1):26-28. |
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| Authors: | Tang Bao Qin Maoling Wang Zhenzhen |
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| Institution: | 1 )School of Information Science and Engineering, Shandong Normal University, 250014,Jinan, China; 2 )Shandong Provincial Key Laboratory for Novel Distributed Computer Software Technology,250014 ,Jinan, China ) |
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| Abstract: | In order to improve the imperceptibility of the 3D model of the digital watermark,this paper put forward an improved digital watermarking algorithm based on 3D mesh segmentation.First of all,the 3D mesh model was segmented to obtain a sum of meaningful sub -meshes.Secondly,we should calculate the frequency domain coefficient matrix for each sub -mesh,and then the same watermark information was embedded into the coefficient matrixes which have been computed.As a result,we achieved the vertex matrix with watermarks as well as a new mesh model with watermarks.Experimental results show that the algorithm we proposed is robust against various attacks,while the embedded watermark is invisible.Furthermore,our algorithm maintains a good visual effect of the model. |
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| Keywords: | 3D digital watermarking mesh segmentation frequency domain robustness |
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