期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2010
卷号：XXXVIII - Part 1
出版社：Copernicus Publications
摘要：The acquisition of vector maps is a costly process in which large amount of labour and material resources are needed for acquiring original vector map. It is very important to protect intellectual properties of vector maps under complicated network environment and prevent vector maps from being illegally commercialized abused. In this paper, we propose a watermarking algorithm for vector map based on discrete cosine transform. Watermark is hidden DCT coefficients with middle frequency. Experiments show that our watermarking algorithm is robust against many attacks such as rotation, scaling, translation, and simplification
