运用特征点的矢量空间数据盲水印算法Feature points based blind watermarking approach for vector data
张黎明,闫浩文,齐建勋,张永忠
摘要(Abstract)：
针对矢量空间数据水印攻击的特点,该文提出了基于特征点的矢量空间数据盲水印算法。在水印嵌入前,应用道格拉斯-普克方法,提取矢量数据特征点;对特征点进行离散傅里叶变换,将水印通过量化的方法嵌入离散傅里叶变换后的幅度系数和相位系数中;水印被多次嵌入,实现了水印的盲提取。试验结果表明,该方法引起的空间数据误差很小,同时对旋转、平移、要素排序、数据格式转换、裁剪、压缩、增删点等攻击具有较好的鲁棒性。
关键词(KeyWords)： 特征点;矢量空间数据;盲水印;DFT
基金项目(Foundation): 国家自然科学基金资助项目(41371435,71563025);; 甘肃省科技支撑计划项目(1304GKCA009);; 甘肃省自然基金项目(148RJZA041,148RJZA028);; 甘肃省财政厅基本科研业务费项目(214146)
作者(Author): 张黎明,闫浩文,齐建勋,张永忠
DOI: 10.16251/j.cnki.1009-2307.2016.04.036
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