The KIPS Transactions:PartB (정보처리학회논문지B)

Korea Information Processing Society (한국정보처리학회)
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Generation and Protection of Efficient Watermark Signals and Image Quality Preservation in Transmission Channel Using Turbo Coding

효과적인 워터마크 신호의 생성과 보호 및 터보코딩을 이용한 전송채널상에서의 화질 보존

  • 조동욱 (도립충북과학대학 정보통신과학과) ;
  • 배영래 (한국전자통신연구원)
  • Published : 2002.02.01
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Abstract

In this paper, an implementation method of the efficient image transmission stage using watermarking and channel ceding is proposed. Usually, image communication system consists of both a transmitter part and a receiver part. The transmitter part takes charge of copyright protection of the generated image data, and image coding and compression that can deal with channel noises when transmitting. In the transmitter part, we propose a channel coding method which protects both the watermark signal and the original signal for protecting the copyright of image data and solving channel noises when transmitting. Firstly, copyright protection of image data is conducted. For this, image structure analysis is performed, and both the improvement of image quality and the generation of the watermark signal are made. Then, the histogram is constructed and the watermark signals are selected from this. At this stage, by embedding of the coefficients of curve fittness into the lower 4 bits of the image data pixels, image quality degradation due to the embedding of watermark signals are prevented. Finally, turbo coding, which has the most efficient error correction capability in error correction codes, has been conducted to protect signals of watermark and preserved original image quality against noises on the transmission channel. Particularly, a new interleaving method named "semi random inter]easer" has been proposed.

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References

  1. N. Nikolaids and I. Pitas, 'Robust Image Watermarking in the Spatial Domain,' Signal Processing 66, pp.385-403, 1998 https://doi.org/10.1016/S0165-1684(98)00017-6
  2. Sung Hwan jung, 'Comparison of the Robustness of Digital Image Watermark for Copyright Protection,' Korea Information Processing Society, National Conf., Vol.8, No.1, 2001
  3. I. J. Cox and M. L. Miller, 'A Review of Watermarking and the Importance of Perceptual Modeling,' Proc. of SPIE Conf. on Human Vision and Electronic Imaging II, Vol. 3016, pp.92-99, Feb. 1997 https://doi.org/10.1117/12.274502
  4. Y. Park, 'Digital Watermarking Scheme Using Spread Spectrum Technique,' Korea Information Processing Society, National Conf., Vol.8, No.1, 2001
  5. I. J. Cox et al, 'Secure Spread Spectrum Watermarking for Multimedia,' IEEE Trans on Image Processing, Vol.6, No.12, pp.1673-1687, Dec. 1997 https://doi.org/10.1109/83.650120
  6. A. Pivaet al, 'DCT-based Watermark Recovering Without Resorting to the Uncorrupted Original image,' Proceedings of ICIP '97, 1997 https://doi.org/10.1109/ICIP.1997.647964
  7. X. G. Xia et al, 'A Multiresolution Watermark for Digital Image,' Proceedings of ICIP '97, 1997 https://doi.org/10.1109/ICIP.1997.647971
  8. M. Barni et al, 'A DCT-Domain System for Robust Image Watermarking,' Signal Processing 66, pp.357-372, 1995 https://doi.org/10.1016/S0165-1684(98)00015-2
  9. Frederic Deguillaume, 'Robust 3D DFT Video Watermarking,' Proceedings of SPIE, Vol.3657, 1999
  10. Gerit C. Langellar et al, 'Watermarking by DCT Coefficient Removal : A Statistical Approach to Optimal Parameter Setting,' Proceeding of SPIE, Vol.3657, 1999 https://doi.org/10.1117/12.344659
  11. Berrou. C. & Glavieux. A., 'Near Shannon Limit Error Coding and Decoding : Turbo Codes,' Proc. ICC '93, 1993 https://doi.org/10.1109/ICC.1993.397441
  12. S. Y. Kim et al, 'Analysis of Hardware Implementation Trend for Turbo Codes,' Journal of ETRI, Vol.15, No.4, Aug. 2000
  13. E. Jacobsen, The EF Data Turbo Codec Prototype, EF Data Corp., May, 1999
  14. A. S. Bamulescu and S. S. Pietrobon, 'Interleaver Design for Turbo Codes,' Electronics Letters, 8th, Dec. Vol.30, No. 25, 1994
  15. Small World Communications, 'MAP04T Very High Speed MAP Decoder,' Ver 2.0,13 Mar. 2000, http://www.sworld.com.au/Products