基于点模式匹配的矢量地图水印算法  

A WATERMARKING ALGORITHM FOR VECTOR MAP BASED ON POINT PATTERN MATCHING

作　　者：张佐理[1] 夏守行[1] 郑胜峰[1] 王本轶[1] 

机构地区：[1]浙江工贸职业技术学院,浙江温州325003

出　　处：《计算机应用与软件》2013年第2期292-295,共4页Computer Applications and Software

基　　金：温州市科技计划项目(G20110041);浙江工贸职业技术学院教师科技创新活动计划项目(X110105)

摘　　要：提出一种基于点模式匹配的矢量地图水印算法。该算法将灰度图像嵌入到矢量地图的特征顶点中,嵌入时通过控制误差容限,保证水印的不可见性。水印的提取过程采用点模式匹配算法,通过匹配被检测的矢量地图与含水印的矢量地图的关键顶点得到它们之间的配准函数,最后与原矢量地图比较可以计算得到嵌入的水印信息图像。实验证明该算法对平移、旋转、缩放等攻击都能起到很好地抵抗,具有较高的安全性。A watermarking algorithm for vector map based on point pattern matching is presented.The algorithm embeds the gray image to feature vertex of the vector map,while embedding,the invisibility of the watermarking is guaranteed by controlling the tolerance of error.The point pattern matching algorithm is used in watermarking extraction process,the key vertices of the vector map being detected and the vector map with watermark are matched,through this way the registration function between them are obtained.At last,by comparing it with original vector map,the watermarking information image embedded can be derived from calculation.Experiments prove that the algorithm has good resistance against the attacks such as translation,rotation,scaling,etc.,and has relatively high security.

关 键 词：矢量地图 点模式匹配 水印 版权保护 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]