基于双重嵌入的三维数据模型数字水印方法研究

The 3D Data Model Watermarking Method Based on Dual Embedded

三维空间模型数据经过攻击后,其纹理坐标的值发生了改变,对应的纹理映射坐标的值没有发生改变,因而,通过对三维空间模型三维网格进行嵌入,同时对纹理映射坐标也进行水印信息嵌入,不但解决了单个空间模型算法对部分攻击鲁棒性低的问题,而且解决了目前具有纹理映射数据的三维空间模型数据在文件攻击和模型攻击后无法检测出水印的问题,对三维数据模型数据的版权保护具有重要意义.

Although the texture coordinates of the three-dimensional geographic model data of the value has changed with attack,but the corresponding texture mapping coordinates values are not changed.Therefore,based on its embedded in a three-dimensional grid as well as texture mapping coordinates of watermark are embedded.This method not only solves the individual geographic model algorithm for some attack the problem of low robustness,and solves the problen that the three-dimensional geographic model data in the file with texture mapping data cannot be detected after the attack at present,which has of great importance for the protection of copyright of 3D data model.