基于纠错编码的矢量地图可逆水印算法  

Reversible watermarking algorithm of vector maps based on ECC

作　　者：邱银国[1] 孙久运 鲁立江 Qiu Yinguo;Sun Jiuyun;Lu Lijiang(School of Environment Science&Spatial Informatics,China University of Mining&Technology,Xuzhou Jiangsu 221116,China;College of Resource&Environment,Anhui Science&Technology University,Chuzhou Anhui 233100,China)

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116 [2]安徽科技学院资源与环境学院,安徽滁州233100

出　　处：《计算机应用研究》2018年第9期2762-2765,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(41171343);安徽科技学院引进人才项目(ZRC2014460)

摘　　要：当前矢量地图可逆水印算法中,缺乏针对水印提取结果纠错方法的研究,算法的稳健性还有较大提升空间。为此,提出一种基于纠错编码的矢量地图可逆水印算法。采用二值数组表达版权信息并生成其纠错编码,将两者合并组成水印数据,最后将水印数据嵌入顶点极坐标以增强算法抵抗几何变换的能力。水印提取后,通过纠错编码对水印提取结果进行纠错,改善水印提取效果。实验证明该算法具有严格的可逆性、理想的隐蔽性以及较强的稳健性。Current reversible watermarking algorithms of vector maps have done few works focusing on error correction algorithms after watermark extraction,and there is still room for improvement of robustness of watermarking schemes.Therefore,this paper proposed a reversible watermarking scheme for vector maps.The proposed scheme expressed copyright information exploiting a binary array,for which ECC were then generated.Then,this scheme generated the final watermark data by merging the obtained binary array and ECC.Finally,this scheme embeded watermark bits into polar coordinates of map vertices to improve the ability of this scheme in resisting geometric transformation.After watermark extraction,the proposed scheme used ECC to correct the wrongly bits in the extracted copyright watermark data.Experimental results validate the exactly reversibility,ideal invisibility and strong robustness of the proposed watermarking scheme.

关 键 词：矢量地图 可逆水印 纠错编码 版权保护 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]