摘要
根据灰度图像信息量大、可视化效果好等特点,提出一种基于灰度图像水印的空间域矢量地理空间数据水印算法,即先将灰度图像水印信息按一定法则进行处理,再将处理后的水印信息嵌入到空间域矢量地理空间数据中,最后对嵌入水印信息的矢量地理空间数据进行检测。文中还对矢量地理空间数据进行了攻击实验,分析表明,提取出的灰度图像水印具有较好的鲁棒性效果和一定的实用价值。
Based on the characteristics of gray image, this paper presents a watermarking arithmetic using gray image watermarking for spatial domain Vector Geo-spatial Data. First, gray image watermarking is processed by some rules. Then the processed watermarking is embedded in the spatial domain Vector Geo- spatial Data. Finally, the Vector Geo-spatial Data which includes watermarking is inspected. In the paper, some attacks experiments show that the gray image watermarking arithmetic has good robustness.
出处
《测绘工程》
CSCD
2008年第1期21-23,27,共4页
Engineering of Surveying and Mapping
基金
国家863基金资助项目(2006AA12Z223)
地理信息系统教育部重点实验室开放研究基金资助项目(wd200601)
关键词
数字水印
矢量地理空间数据
灰度图像
空间域
鲁棒性
digital watermarking
Vector Geo-spatial Data
gray image
spatial domain
robustness
