摘要
利用数字水印技术能够对数字作品实现有效的版权保护。目前的数字水印技术大多都是针对多媒体数据。但是在GIS(地理信息系统)中除了栅格数据外,还存在大量的矢量数据。目前的数字水印算法仅仅能满足栅格数据,无法满足在矢量数据中嵌入水印的需求。本文在分析GIS数据特点的基础上,在GIS矢量数据的频域提出了一套行之有效的数字水印算法。
Effective copyright protection for digital works can be realized using the technology of watermarking, most of which aim at media data. However, there exist a lot of vector data besides raster data in GIS while current algorithms can only cope with raster data rather than vector data with watermark embedded. Based on an analysis of the characteristics of GIS data, this paper presents an effective watermarking algorithm on the frequency domain of vector data in GIS.
出处
《电子科技》
2007年第11期26-29,34,共5页
Electronic Science and Technology
关键词
地理信息系统(GIS)
数字水印
版权保护
geographic information system
digital watermarking
copyright Protection
