Cryptography Reference
In-Depth Information
6
GIS Watermarking: Hiding Data in 2D Vector
Maps
XiaMu Niu
1
, ChengYong Shao
2
, and XiaoTong Wang
2
1
Information Security Technique Research Center, ShenZhen Graduate School,
Harbin Institute of Technology, P. R. China
xiamu.niu@hit.edu.cn
2
Department of Navigation, Dalian Naval Academy, P. R. China
chengyong.shao@dsp.hit.edu.cn
rfrm@dlut.edu.cn
Summary.
The application of digital vector maps faces some yet to be resolved
issues such as digital copyright protection, data authentication, data source tracing,
for example. This chapter focuses on the topic of 2D vector map data hiding which
provides potential solutions to above issues. The particularities of vector map wa-
termarking are first summarized. The state-of-the-art of the research on the vector
map watermarking is then reviewed by categorizing the current research into three
sub areas. In addition, three schemes are presented towards resolving some open
issues of three sub areas. We outline some future works at the end of the chapter.
6.1 Introduction
The rapid development of computer communication and Internet techniques
makes it very easy to exchange data via networks. Correspondingly, it also
becomes harder to protect the digital copyrights of various digital medias.
The technique of watermarking provides a potential solution to the issue.
Watermarking can also play many other roles such as hidden communication,
data authentication, data tracing (fingerprint), for example. Data sets can be
used as the cover data of watermark, for example digital image, audio, video,
text, bar-code, 3D model, CAD data, 2D polygonal data, softwares, and VLSI.
Among these data types, the watermarking for some general multimedia data,
such as digital images, audio, videos and 3D models, has been given much
more attention than other data types. This chapter focuses on the techniques
of watermarking Geographical Information System (GIS) data, namely 2D
vector map watermarking. This has attracted relatively less attention than
other areas in the research field.
