Robust Vector Digital Watermarking Using Angles and a Random Table

@article{Kim2010RobustVD,
  title={Robust Vector Digital Watermarking Using Angles and a Random Table},
  author={Jungyeop Kim},
  journal={AISS},
  year={2010},
  volume={2},
  pages={79-90}
}
In this paper I propose a new digital watermarking method using angles. Angles like distance are not changed easily in vector data. Because of this, the proposed method is robust to scaling. In previous methods there are distortion and topology change. However, this proposed method doesn’t have distortion and topology change because I used intersection test. Therefore, the proposed method could be used in various fields to protect the copyright of vector map. 

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