Abstract
Spatial data copyright and security have become very important issues in geo-information technology. Digital watermarking has been developed to protect the copyright of the data. Current researches are concentrated on raster image data and only little research on geo-referenced spatial data in vector format has been conducted. However, vector is still the most important data format for geo-information and this research is concentrated on vector data. Watermarking vector data means to add/ delete or modify some features. However, a slight change resulting from data generalization or compression may corrupt the watermarks. Therefore, this paper aims to propose a simple but rather effective statistical testing approach to recognise and record suspected infringement of data copyright. This approach has proved to be effective according to the results from a number of experimental tests.
Original language | English |
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Pages (from-to) | 318-327 |
Number of pages | 10 |
Journal | Survey Review |
Volume | 40 |
Issue number | 310 |
DOIs | |
Publication status | Published - 1 Dec 2008 |
Keywords
- Copyright
- Digital watermaking
- Infringement
- Spatial data
- Vector data
ASJC Scopus subject areas
- Earth and Planetary Sciences (miscellaneous)
- Computers in Earth Sciences
- Civil and Structural Engineering