| 一种用于精确认证的矢量地理数据脆弱水印算法 |
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| 引用本文： | 王奇胜,朱长青.一种用于精确认证的矢量地理数据脆弱水印算法[J].测绘科学技术学报,2012,29(3):218-221,225. |
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| 作者姓名： | 王奇胜 朱长青 |
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| 作者单位： | 1. 信息工程大学测绘学院,河南郑州450052;南疆测勤队,新疆喀什844200
2. 南京师范大学虚拟地理环境教育部重点实验室,江苏南京,210046 |
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| 基金项目： | 国家自然科学基金项目，江苏高校优势学科建设工程资助项目 |
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| 摘 要： | 对矢量地理数据脆弱水印进行研究,提出一种用于精确认证的矢量地理数据脆弱水印算法.利用数据自身的特征映射生成脆弱水印,并基于量化思想将数据点自身和相邻数据点的水印信息嵌入到数据点上.通过脆弱水印检测对矢量地理数据的任何篡改进行检测定位,实现针对矢量地理数据的精确认证.实验结果表明,该算法在不破坏原始数据精度和可视化效果的同时,能够有效检测出矢量地理数据中的数据修改、增点、删点、裁剪等篡改,并能将篡改精确定位到数据点.
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| 关 键 词： | 矢量地理数据 精确认证 脆弱水印 水印检测 可视化 |
Fragile Watermarking Algorithm for Vector Geographic Data Exact Authentication |
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| WANG Qisheng
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ZHU Changqing.Fragile Watermarking Algorithm for Vector Geographic Data Exact Authentication[J].Journal of Zhengzhou Institute of Surveying and Mapping,2012,29(3):218-221,225. |
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| Authors: | WANG Qisheng ZHU Changqing |
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| Institution: | 1.Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China; 2.Surveying and Mapping Support Unit of South Xinjiang,Kashi 844200,China; 3.Key Laboratory of Virtual Geographic Environment,Nanjing Normal University, Nanjing 210046,China) |
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| Abstract: | The fragile watermarking for the vector geographic data was studied,and a fragile watermarking algorithm for vector geographic data exact authentication was proposed.The fragile watermark was generated using the feature of the data points,and then the watermark of the data point and the neighbor was embedded into the coordinates of the data point by quantization idea.The modifications of the vector geographic data could be detected and located through the fragile watermark detecting,so the exact authentication for vector geographical data was achieved.The experiment showed that the algorithm did not destroy the original data accuracy and visualization,and could effectively detect data modifications of data modifying,adding,deleting and clipping and locate the modification position to the data points. |
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| Keywords: | vector geographic data exact authentication fragile watermarking watermark detect visualization |
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