摘要
在某些重要应用领域,一旦地图资源非法泄露,确定地图来源是首要问题。在该文提出的方案中,首先采集地图所有者的指纹信息并进行特征提取,提取到的特征信息转换为二进制编码,并将该编码嵌入到矢量地图属性文件的对象定义数据块中。在对象定义块中,属性描述信息之后以结束符作为结束标识,结束符识之后存储的数据不被任何工具软件读取和显示。实验和分析表明,该隐藏算法具有较好的鲁棒性,能够对地图无损地嵌入和提取水印信息,NC值可达97%以上,兼顾结合指纹匹配算法的性能,身份识别的准确率保持在80%以上。
It is important to identify the source or owner after the vector map is leaked in some key application areas. In this paper proposed scheme, the characteristics of the map owner’s fingerprint can be extracted and converted into the binary character string as the watermark; and then the watermark will be embedded into the object definition blocks in the attribute file; In any object definition block, there is a character as the ending indicator followed the definition information of the object, the data after the ending character can not be processed or displayed by any tools. Experiments show that the algorithm has better robustness; The watermark can be embedded or extracted nondestructively to the vector map, the value of NC coefficient is more than 97%, as the factor of fingerprint matching algorithm, the accuracy of authentication is more than 80%.
出处
《电子与信息学报》
EI
CSCD
北大核心
2010年第5期1131-1135,共5页
Journal of Electronics & Information Technology
基金
国家博士后基金(20070410896)
省博士后基金(LBH-Z06027)
哈尔滨工程大学基础研究基金(HEUFT05067)资助课题
关键词
信息隐藏
数字水印
矢量地图
指纹
身份验证
Information hiding
Digital watermarking
Vector map
Fingerprint
Identify authentication
