대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1998년도 하계학술대회 논문집 G
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- Pages.2427-2429
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- 1998
디지털 영상물의 저작권 보호를 위한 적응적 정보 은닉 기술에 관한 연구
A Study on Adaptive Information Hiding Technique for Copyright Protection of Digital Images
- Park, Kang-Seo (Dept. of Electrical Eng., Yonsei Univ.) ;
- Chung, Tae-Yun (Samsung Electronics Co.) ;
- Oh, Sang-Rok (Korea Institute of Science and Technology) ;
- Park, Sang-Hee (Dept. of Electrical Eng., Yonsei Univ.)
- 발행 : 1998.07.20
초록
Digital watermarking is the techinque which embeds the invisible signal into multimedia data such as audio, video, images, for copyright protection, including owner identification and copy control information. This paper proposes a new watermark embedding and extraction technique by extending the direct sequence spread spectrum technique. The proposed technique approximates the frequency component of pixels in spatial domain by using Laplacian mask and adaptively embeds the watermark considering the HVS to reduce the degradation of Image. In watermark extraction process, the proposed technique strengthens the high frequency components of image and extracts the watermark by demodulation. All this processes are performed in spatial domain to reduce the processing time.
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