摘要
基于矢量地图数据特点,提出了一种抗数据压缩的矢量地图数据数字水印算法,即在嵌入水印信息之前对数据进行道格拉斯-普克法压缩,然后在特征点中嵌入水印信息。实验分析表明,提出的水印算法在抗数据压缩方面具有较好的效果。
Based on the characteristics of vector map data, in this paper, an anti-compression watermarking algorithm for vector map data was proposed. First, Douglas-Peucker compression was made to the data before embedding watermark. Then the watermark was embedded into the feature points. The experimentation showed that the proposed method had a good effect for the anti-compression of the vector map data.
出处
《测绘科学技术学报》
北大核心
2006年第4期281-283,共3页
Journal of Geomatics Science and Technology
基金
武汉大学地理信息系统教育部重点实验室开放研究基金(wd200601)
关键词
数字水印
矢量地图数据
数据压缩
特征点
digital watermarking
vector map data
anti-compression
feature point
