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http://dx.doi.org/10.3745/KIPSTB.2005.12B.2.151

Feature based Text Watermarking for Binary Document Image  

Choo Hyon-Gon (한국전자통신연구원)
Kim Whoi-yul (한양대학교 전자전기공학부)
Abstract
In this paper, we propose feature based character watermarking methods based on geometical features specific to characters of text in document image. The proposed methods can satisfy both data capacity and robustness simultaneously while none of the conventional methods can. According to the characteristics of characters, watermark can be embed or detected through changes of connectivity of the characters, differences of characteristics of edge pixels or changes of area of holes. Experimental results show that our identification techniques are very robust to distortion and have high data capacity.
Keywords
텍스트 워터마킹;저작권 보호;영상처리;문서 처리;
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