Blind watermarking scheme for polylines in vector geo-spatial data
Blind watermarking scheme for polylines in vector geo-spatial data
复制标题
矢量地理空间数据折线盲水印方案
DOI：
10.1007/s11042-014-2259-9
复制
发表时间：
2015-12-01
影响因子：
3.6
通讯作者：
Peng, Yuwei
中科院分区：
文献类型：
--
作者：
Peng, Zhiyong;Yue, Mingliang;Peng, Yuwei
随着地理信息系统和计算机技术的飞速发展，地理空间数据在各个领域得到了广泛的应用。由于地理空间数据的生产成本很高，非法复制会给数据所有者带来巨大的损失。为了保护地理空间数据的版权，数字水印技术近年来得到了广泛的应用。本文分析了当前地理空间水印和基数攻击的研究现状。在此基础上，提出了一种矢量地理空间数据折线盲水印算法。该方法基于折线的特征顶点构造特征顶点距离比。作为覆盖数据，FVDR通过量化索引调制进行微小修改以嵌入相应的水印比特。水印中的每个比特被嵌入到多条折线中，通过这样做，这些折线中的每一条都包含相应水印比特的副本。由于特殊设计的覆盖数据、量化调制和冗余嵌入，该方案对几何攻击、顶点攻击和物体攻击具有较强的鲁棒性。此外，大量的实验结果表明，该方案的鲁棒性。
With the rapid development of GIS and computer technology, the geo-spatial data has been widely used in many fields. Since the production of geo-spatial data is very costly, illegal copying will lead to huge loss of the data owner. In order to protect the copyright of geo-spatial data, digital watermarking has been employed in recent years. In this paper, current works on geo-spatial watermarking and cardinal attacks are analyzed. Consequently, a blind watermarking scheme for polylines in vector geo-spatial data is proposed. In the proposed scheme, FVDR (feature vertex distance ratio) is constructed based on the feature vertices of polylines. As the cover data, FVDR is slightly modified through quantization index modulation to embed the corresponding watermark bit. Each bit in the watermark is embedded in several polylines, by doing so each of these polylines contains a copy of the corresponding watermark bit. Because of the specially designed cover data, quantization modulation and redundant embedding, the proposed scheme is robust to geometrical attacks, vertex attacks and object attacks. Also, the results of extensive experiments demonstrate the robustness of the proposed scheme.