A New Watermarking Method for 3D Models Based on Integral Invariants

A New Watermarking Method for 3D Models Based on Integral Invariants
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一种基于积分不变量的3D模型水印新方法

DOI:
10.1109/tvcg.2008.101
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发表时间:
2009-03
影响因子:
5.2
通讯作者:
Wang, Yu-Ping
Wang, Yu-Ping
中科院分区:
计算机科学1区
文献类型:
--
作者:
Hu, Shi-Min;Wang, Yu-Ping

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本文提出了一种基于积分不变量的三维模型半脆弱水印认证算法。水印图像的嵌入是通过修改部分顶点的积分不变量实现的。为了修改积分不变量,需要对顶点及其相邻点的位置进行移位。为了提取水印,首先对所有的顶点进行检测,以获取嵌入的信息,然后将这些信息组合起来恢复水印图像。水印图像中可以恢复的部分数量将决定认证决策。实验测试表明,该方法对刚性变换、格式转换、舍入误差等引入的正常使用修改具有鲁棒性,并可用于测试网格编辑和裁剪等恶意攻击。本文的另一个贡献是一种计算两类积分不变量的新算法。
In this paper, we propose a new semi-fragile watermarking algorithm for the authentication of 3D models based on integral invariants. A watermark image is embedded by modifying the integral invariants of some of the vertices. In order to modify the integral invariants, the positions of a vertex and its neighbors are shifted. To extract the watermark, all the vertices are tested for the embedded information, and this information is combined to recover the watermark image. The number of parts of the watermark image that can be recovered will determine the authentication decision. Experimental tests show that this method is robust against normal use modifications introduced by rigid transformations, format conversions, rounding errors, etc., and can be used to test for malicious attacks such as mesh editing and cropping. An additional contribution of this paper is a new algorithm for computing two kinds of integral invariants.
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发表时间: 1998
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