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.
出处
《电网技术》
EI
CSCD
北大核心
2010年第11期6-11,共6页
Power System Technology
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
ultra high voltage （UHV） equipment
quantification index modulation
robust watermark
discretenormal vector
local roughness
