基于顶点范数三维网格模型抗简化盲水印算法  

Anti-simplified blind watermarking algorithm for three-dimensional mesh model based on vertex norm

作　　者：张国有[1] 崔健 ZHANG Guo-you;CUI Jian(College of Computer Science and Technology,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学计算机科学与技术学院,山西太原030024

出　　处：《计算机工程与设计》2023年第3期692-698,共7页Computer Engineering and Design

基　　金：国家自然科学基金面上基金项目(62072325);山西省应用基础研究基金项目(201801D121133)。

摘　　要：为提高三维网格模型的数字水印对网格简化攻击的鲁棒性,提出一种基于顶点范数的三维网格模型抗简化盲水印算法。结合网格模型点与面的权重关系计算模型中心,利用中心计算顶点范数,根据水印长度建立顶点范数分组,在嵌入水印时,通过映射函数调整分组内顶点范数均值嵌入水印信息;在检测水印时,计算各集合内均值进行水印信息的盲检测。实验结果表明,该水印算法具有较好的透明性、鲁棒性以及简化攻击抵抗的能力,为三维网格模型的版权保护提供了有效技术支持。To improve the robustness of digital watermark for 3D mesh model against mesh simplification attack,a three-dimensional mesh model anti-simplified blind watermark algorithm based on vertex norm was proposed.The center of the mesh model was calculated based on the weight relation between points and surfaces,the vertex norm was calculated by the center,and the vertex norm group was established according to the length of watermark.When embedding a watermark,the watermark information was embedded by adjusting the norm mean value within the grouping through a mapping function.The mean value in each set was calculated for blind detection of watermark information in the watermark detection procedure.Experimental results show that the watermark algorithm has good transparency,robustness and the ability to simplify attack resistance,which provides effective technical support for copyright protection of 3D mesh models.

关 键 词：三维网格模型 版权保护 数字水印 盲水印 顶点范数 网格简化 鲁棒性 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]