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A Slope Information Based Fast Mask Generation Technique for ROI Coding

관심영역 코딩을 위한 기울기 정보 기반의 빠른 마스크 생성 기법

  • 박순화 (경상대학교 컴퓨터과학과, 컴.정보통신연구원) ;
  • 서영건 (경상대학교 컴퓨터교육과, 컴.정보통신연구원) ;
  • 이부권 (경상대학교 컴퓨터과학과, 컴.정보통신연구원) ;
  • 강기준 (경상대학교 컴퓨터과학과, 컴.정보통신연구원) ;
  • 김호용 (연진전문대학 컴퓨터정보기술계열)
  • Published : 2009.01.31

Abstract

To support dynamic Region-of-Interest(ROI) in JPEG2000, a fast ROI mask generation is needed. In the existing methods of ROI coding, after scanning all the pixels in order and discriminating ROI, an ROI mask has been generated. Our method scans 4 pixels of the corners in one code block, and then based on those informations, scans the edges from the corners to get the boundaries of ROI and background. These informations are consisted of a distributed information of ROI and two coordinates of the pixels, which are the points the edges and the boundaries meet. These informations are transmitted to encoder and supported for fast ROI mask generation. There were no great differences between the proposed method and the existing methods in quality, but the proposed method showed superiority in speed.

JPEG2000에서 동적 관심영역 코딩을 지원하기 위해서는 빠른 ROI 마스크 생성이 제공되어야 한다. 기존의 관심영역 부호화에서는 모든 픽셀을 순차적으로 탐색하여 관심영역을 판별한 후에 ROI 마스크를 생성하므로 많은 처리시간을 요구하였다. 제안한 방법은 하나의 코드블록내에 네 모서리 부분의 픽셀을 탐색하고, 이 정보를 기반으로 ROI와 배경의 경계를 찾아내기 위해 가장자리를 탐색한다. 탐색 후 얻어진 결과는 ROI 분포정보와 가장자리와 경계부분이 만나는 지점인 두 점의 좌표로 구성된다. 얻어진 두 정보는 인코더로 전송되어 빠른 ROI 마스크를 얻도록 지원된다. 제안한 방법은 기존의 방법과 비교했을 때 품질은 큰 차이가 없지만, 탐색 시간과 마스크 생성시간에서 우수함을 보였다.

Keywords

References

  1. Ned Kock, "Media Richness or Media Naturalness The Evolution of Our Biological Communication Apparatus and Its Influence on Our Behavior Toward E-Communication Tools," IEEE Transactions on Profession Communication, Vol. 48, No. 2, Jun. 2005.
  2. M. Rabbani and R. Joshi, "An Overview of The JPEG2000 Still Image Compression Standard," Signal Processing, Vol. 17, pp. 3-48, 2002.
  3. Junichi Hara, "An Implementation of JPEG 2000 Interactive Image Communication System," ISCAS 2005, Vol. 6, pp. 5922-5925, May 2005.
  4. Jaehan In, Shahram Shirani, and Faouzi Kossentini, "On RD Optimized Processive Image Coding Using JPEG," IEEE Transactions on Image Processing, Vol. 8, No. 11, Nov. 1999.
  5. Ahn, C.B., Kim, I.Y., Han, S.W., "Medical Image Compression Using JPEG Progressive Coding," Nuclear Science Symposium and Medical Imaging Conferenoe, 1993 IEEE Conferenoe Record, pp. 1336-1339, Nov. 1993
  6. ISO/IEC International Standard 15444-1, ITU Recommendation T. 800, "JPEG2000 Image Coding System," 2000.
  7. Charilas Christopoulos, Athanassios Skodras, and Touradj Ebrahimi, "The JPEG2000 Still Image Coding System : An Overview," IEEE Transactions on Consumer Electronics, Vol. 46, No. 4, pp. 1103-1127, Nov. 2000. https://doi.org/10.1109/30.920468
  8. Kong H-S, Vetro A., Hata T. and Kuwahara N., "Fast Region-of-Interest Transcoding for JPEG2000 Images", Mitsubishi Electric Reseerch Laboratories, Inc., Dec. 2005.
  9. Martin Boliek, Charilas Christopoulos, "JPEG 2000 Part I Final Committee Draft Version 1.0," ISO/IEC JTC 1/SC 29/WG 1 N1646R, March 2000.
  10. Martin Boliek, Eric Majani, J. Scott Houchin, James Kasner and Mathias Larsson Carlander, "JPEG 2000 Part II Final Committee Draft," ISO/IEC, JTC 1/sc 29/WG 1 N2000, Dec. 2000.
  11. R.Grosbois, D.Santa-Crus and T.Ebrahimi, "New Approach to JPEG2000 Compliant ROI Coding," Proc. of the SPIE 46th, Aug. 2001.
  12. Z. Wang, A. C.Bovik and Fellow, "Bitplane-by-Bitplane Shift(BbBShift) - A Suggestion for JPEG2000 Region of Interest Image coding", IEEE Signal Processing Letters, Vol. 9, No. 5, May 2002.
  13. Zhou Wang, Serene Banerjee, Brian L. Evans and Alan C. Bovik, "Generalized Bitplane-by-Bitplane Shift Method for JPEG2000 ROI Coding," IEEE ICIP, pp. 81-84, Sep. 2002.
  14. Lijie Liu and Guoliang Fan, "A New JPEG2000 Region-of-Interest Image Coding Method : Partial Significant Bitplanes Shift," IEEE Signal Processing Letters, Vol. 10, No. 2, Feb. 2003.
  15. LI-BAO ZHANG, KE WANG, "New Approach for JPEG2000 Region of Interest Image Coding : Hybrid Bitplane Shift," Proceedings of the Third International Conference on Machine Learning and Cybernetics, Shanghai, pp. 26-29, Aug. 2004.
  16. H. Yang, M. Long and H. M. Tai, "Region-of-Interest Image Coding Based on EBCOT," IEE Proceedings-Vision, Image, and Signal Processing, Vol. 152, pp. 590-596, Oct. 2005.
  17. Rene Rosenbaum, Heidrun Schumanm, "Flexible, Dynamic and Compliant Region of Interest Coding in JPEG2000," IEEE ICIP pp. 22-25, Sep. 2002.
  18. V. Sanchez, A. Basu, and M. K. Mandal, "Prioritized region of interest coding in JPEG2000," IEEE Transactions on Circuits and Systems for Video Technology, Vol. 14, No. 9, Sep. 2004.
  19. Joel Askelof. Mathias Larsson and Charilaos Christopoulos, "Region of Interest Coding in JPEG2000," Signal Processing: Image Communication 17, pp. 105-111, 2002. https://doi.org/10.1016/S0923-5965(01)00026-1