一种矢量线状要素数据零水印算法  

A Zero-Watermarking Algorithm for Vector Linear Feature Data

作　　者：李文德[1,2] 闫浩文[1,2] 王中辉[1,2] 张黎明 

机构地区：[1]兰州交通大学测绘与地理信息学院,甘肃兰州730070 [2]甘肃省地理国情检测工程实验室,甘肃兰州730070

出　　处：《测绘科学技术学报》2016年第1期94-98,共5页Journal of Geomatics Science and Technology

基　　金：国家自然科学基金面上项目(41371435);国家科技支撑计划项目(2013BAB05B01);地理空间信息工程国家测绘地理信息局重点实验室经费资助项目(201313);甘肃省自然科学基金项目(148RJZA041;148RJZA028);甘肃省财政厅基本科研业务费(214146)

摘　　要：提出一种针对矢量线状要素数据的零水印算法。首先,利用Arnold技术置乱原始水印图像;然后,采用Douglas-Peucker压缩算法提取矢量线状要素数据的特征点;最后,将置乱后的水印图像与由相邻特征点所构成直线的斜率调制所得的二值矩阵进行异或运算,从而构造出零水印图像。实验结果表明,该算法能够抵抗常见的平移、旋转、缩放等几何攻击,并且对Douglas-Peucker压缩和裁剪攻击具有较好的鲁棒性。A zero-watermarking algorithm for vector linear feature data is promised. Firstly, the Arnold method is employed to shuffle the original watermark image. Then, the Douglas-Peucker algorithm is used to extract the characteristic vertices from the vector linear elements data. Finally, the XOR operation is done between the shuffled watermark image and the binary matrix consisting of the modulated slopes of the adjacent characteristic vertices,and the zero-watermark image is obtained. The experiments show that the algorithm can resist common geometric attacks including translation, rotation and scaling. It also has good robustness to Douglas-Peucker compression and cropping attack.

关 键 词：零水印 ARNOLD变换 Doulas-Peucker压缩算法 斜率调制 鲁棒性 

分 类 号：P208[天文地球—地图制图学与地理信息工程]