- 비축 홀로그램을 이용한 디지털 워터마킹
- ㆍ 저자명
- 김규태,김종원,김수길,최종욱
- ㆍ 간행물명
- 電子工學會論文誌. Journal of the Institute of Electronics Engineers of Korea. SP, 신호처리
- ㆍ 권/호정보
- 2004년|41권 3호|pp.183-194 (12 pages)
- ㆍ 발행정보
- 대한전자공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
We propose a now watermarking scheme that can be used to embed multiple bits and also resilient to geometrical transforms such as scaling, rotation, and cropping, based on off - axis holographic watermark that allows multiple watermark recovery without original content(cover image). The holographic watermark is that Fourier transformed digital hologram is embedded into cover image in the spatial domain. The proposed method has not only increased robustness with a stronger embedding but also imprescriptibility of the watermark in the evaluation process. To compare with the convention기 scheme, the spread spectrum, we embedded and recovered maximum 1,024 bits that consist of binary number over PSNR(peak signal-to-noise ra야o) 39dB. And also, we computed robustness with BER(bit error rate) corresponding the above attack