| 图谱域的矢量地图可逆水印算法 |
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| 引用本文： | 门朝光,曹刘娟,孙建国.图谱域的矢量地图可逆水印算法[J].哈尔滨工业大学学报,2009(12):83-87. |
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| 作者姓名： | 门朝光 曹刘娟 孙建国 |
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| 作者单位： | 哈尔滨工程大学高可信计算技术研究中心 |
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| 基金项目： | 黑龙江省博士后科研启动基金资助项目(LBH-Q08124) |
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| 摘 要： | 以多边形特征点提取为基础,构造特征点的星树,通过修改星树图谱域系数中差值最小的一对嵌入水印信息,在水印提取阶段能够无损恢复原始矢量地图数据.实验结果表明该水印方案严格可逆,具有较好的隐蔽性及抗图形简化能力,是一种用于二维矢量地图版权保护的实用算法.
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| 关 键 词： | 矢量地图 版权保护 可逆水印 Laplacian矩阵 图谱域 |
Reversible watermarking for 2D-vector maps based on graph spectral domain |
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| MEN Chao-guang,CAO Liu-juan,SUN Jian-guo.Reversible watermarking for 2D-vector maps based on graph spectral domain[J].Journal of Harbin Institute of Technology,2009(12):83-87. |
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| Authors: | MEN Chao-guang CAO Liu-juan SUN Jian-guo |
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| Affiliation: | (R&D Center of High Dependability Computing Technology,Harbin Engineering University,Harbin,150001,China) |
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| Abstract: | A reversible watermarking scheme for 2D-vector maps based on graph spectral domain is presented.In the system,a feature point star-tree is constructed based on polygon feature point selection.By modifying a pair of embedded watermark with the minimal difference of spectral coefficients,the lossless recovery of original 2D-vector data during the watermark extraction phase can be ensured.Experimental results show that the proposed scheme is strictly reversible.It has preferable invisibility and the capacity to resist simplification attack,thus is used as a pragmatic algorithm for copyright protection of 2D-vector maps. |
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| Keywords: | vector map copyright protection reversible watermarking Laplacian matrix graph spectral domain |
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