具有身份识别功能的矢量地图数字水印研究

孙建国; 门朝光; 马春光; 曹刘娟

doi:10.3724/SP.J.1146.2009.00748

具有身份识别功能的矢量地图数字水印研究

doi: 10.3724/SP.J.1146.2009.00748

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出版历程
- 收稿日期: 2009-05-15
- 修回日期: 2009-09-28
- 刊出日期: 2010-05-19

Digital Watermarking with Authentication for Vector Maps

摘要

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。
- 信息隐藏; 数字水印; 矢量地图; 指纹; 身份验证
Abstract: 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 owners 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%.

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