特高压设备三维网格模型自适应量化水印算法  

An Adaptive Watermark-Quantifying Algorithm for 3-D Meshs Model of Ultra High Voltage Equipment

作　　者：朱少敏[1] 刘建明[2] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192 [2]国网信息通信有限公司,北京市宣武区100761

出　　处：《电网技术》2010年第11期6-11,共6页Power System Technology

摘　　要：针对特高压设备三维网格模型提出一种基于量化索引调制机制的自适应鲁棒水印算法,实现对具有自主知识产权的特高压设备三维网格模型版权保护。该算法首先将模型变换到仿射不变空间;结合模型水印嵌入顶点的离散法向量和局部粗糙度,通过自适应量化方式实现水印嵌入。实验结果表明,该算法能有效抵抗加性噪声、仿射变换、网格压缩、网格滤波等多种网格攻击,具有较强不可感知性和鲁棒性。To protect the independent intellectual property right of 3-D mesh model of ultra high voltage （UHV） equipment, an adaptive watermark algorithm is proposed based on quantification index modulation mechanism. Firstly, the 3-D mesh model is transformed into an affine invariant space, then combing the vertex discrete normal vector and local roughness of the model, the robust watermark is embedded into 3-D mesh model in an adaptive quantification manner. Experimental results show that the proposed watermark algorithm can withstand various mesh attacks such as additive noise, affine transformation, mesh compression and mesh filtering, therefore it possesses characteristics of strong imperceptibility and robustness.

关 键 词：特高压设备 量化索引调制 鲁棒水印 离散法向量 局部粗糙度 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]