Journal of the Korean Institute of Telematics and Electronics S (전자공학회논문지S)
- Volume 36S Issue 12
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- Pages.27-33
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- 1999
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- 1226-5837(pISSN)
Watermaking Method for Digital Images in the Wavelet Domain
웨이블릿 영역에서의 디지털 영상 워터마킹 방법
- Kim, Young-Sik (Dept. of Electronics Engineering, Sogang University) ;
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Kwon, O-Hyung
(Dept. of Electronics Engineering, Sogang University)
;
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Park, Rae-Hong
(Dept. of Electronics Engineering, Sogang University)
- Published : 1999.12.01
Abstract
A wavelet based multiresolution watermarking method using the human visual system (HVS) is proposed, in which a different number of watermarks, in proportion to the energy contained in each band, are embedded into each band. Experiments with various test images show that the proposed three-level wavelet based method is robust to various attacks such as joint photographic experts group (JPEG) compression, smoothing, cropping, collusion, multiple watermarking, and so on.
본 논문에서는 인간의 시각 시스템 (human visual system)을 이용한 웨이블릿 기반 다중해상도 워터마킹 방법을 제안하였다. 각 밴드의 에너지에 비례하여 각각 다른 길이의 워터마크가 삽입되었다. 여러 실험영상을 통한 실험결과에 의하면 제안한 3단계 웨이블릿 기반 워터마크 방법이 joint photographic experts group (JPEG) 압축, smoothing, cropping, collusion, 다중 워터마크 등의 다양한 공격에 강건한 것으로 나타났다.
Keywords