Journal of the Institute of Electronics Engineers of Korea CI (전자공학회논문지CI)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Fuzzy Measures to Control Video Bit-rate in the DCT Domain

동영상 대역폭 조절을 위한 DCT 영역의 퍼지 측정값

  • 김태용 (중앙대학교 첨단영상대학원)
  • Published : 2006.07.01
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Abstract

In this paper, we propose a fuzzy method to control bit-rate in the DCT Domain. The method consists of a bit-rate allocation with fuzzy measures and a least-distortion bit-rate reduction. Fuzzy measures are calculated by the code length, the discontinuity ambiguity, and the neighborhood momentum in each DCT block. These measures are summed with weights and form a reduction fuzziness to indicate the degree of preferable reduction. Using the reduction fuzziness. each DCT block is filtered by the least-distortion reduction method to adjust the bit-rate for the target bandwidth. In the experiment, we show the results that the transcoded video quality by the method is better and the bandwidth is more regular than those of existing methods in both visually and quantitatively.

본 연구에서는 DCT 영역에서 퍼지 측정값을 이용하여 동영상의 전송 대역폭을 조절하는 방법을 제안한다. 이 방법은 비트량 할당을 위한 퍼지 측정값과 최소 왜곡을 초래하는 비트량 축소 방법으로 구성되며, 퍼지 측정값은 코드 길이, 불연속 애매성 및 수변 블록의 모멘텀으로 계산된다. 이러한 측정값은 가중치를 곱하여 계산되며 대역폭 축소의 적절한 정도를 나타내며 이러한 퍼지 애매성을 이용하여 각각의 DCT 블록은 최소 왜곡 방법에 의하여 필터링되어 동영상의 대역폭을 대상 네트워크 환경의 대역폭에 적합하도록 축소한다. 실험에서는 이러한 방법에 의하여 트랜스코딩된 영상의 화질이 시각적 및 양적으로 우월함을 나타내었고, 대역폭이 균일함을 보여준다.

Keywords

References

  1. Zhijun Lei and Nicolas D. Georganas, 'An accurate bit-rate control algorithm for video transcoding', Journal of Visual Communication Image Representation, Vol.14, pp.321-339, 2003 https://doi.org/10.1016/S1047-3203(03)00018-X
  2. M. Ghanbari, 'Two-layer coding of video signals for VBR networks', IEEE J. Select. Areas Commum, Vol.7, pp.771-781, 1989 https://doi.org/10.1109/49.32340
  3. ISO/IEEE 13818-2, 'Information technology generic coding of moving pictures and associated audio information-Part 2: Video',1995
  4. J. Youn and M. T. Sun, 'Video transcoding with H,263 bit-streams', Journal of Visual Communication and Image Representation, Vol. 11, pp.385-403, 2000 https://doi.org/10.1006/jvci.2000.0449
  5. H, Sun, w. Kwok, and J. W. Zdopski, 'Architecture for MPEG compressed bitstream scaling', IEEE Transactions on Circuits and Systems for Video Technology, Vol.6, pp.191-199 1996 https://doi.org/10.1109/76.488826
  6. Wen-Nung Lie, Ming-Lun Tsai, and Tom c-i Lin, 'Rate-distortion optimised DCT -dornain video transcoder for bit-rate reduction of MPEG videos', IEEE International Conerence on Acoustics, Speech, and Signal Processing, Vol.5, pp.969-972, 2004 https://doi.org/10.1109/ICASSP.2004.1327274
  7. J-C Tsai and cu Hsieh, 'Modified TMN8 Rate Control for Low-Delay Video Communications', IEEE Trans. Circuits Syst: Video Technol., Vol.14, pp.864-868, 2004 https://doi.org/10.1109/TCSVT.2004.828333
  8. Kai-Tat Fung and Wan-Chi Siu,'DCT-based video frame-skipping transcoder', International Conference on Image Processing, Vol. 2, pp.656-659, 2003 https://doi.org/10.1109/ISCAS.2003.1206059
  9. P. A. A. Assuncao and M. Ghanbari, 'A frequency-domain video transcoder for dynamic bit-rate reduction of MPEG-2 bit stream', IEEE Transactions on Circuits and Systems for Video Technology, Vol.8, No.8, pp.953-967, 1998 https://doi.org/10.1109/76.736724
  10. N. Bjork and C. Christopoulos, 'Transcoder Architectures for Video Coding', IEEE Transactions on Consumer Electronics, Vol.44, No.1, pp.88-98, 1998 https://doi.org/10.1109/30.663734
  11. JunXin, Ming- Ting Sun, and Kangwook Chun, 'Bit-Allocation for Transcoding of Pre-Encoded Video Streams', Visual Communications and Image Processing, pp.164-171, 2002 https://doi.org/10.1117/12.453054
  12. TaeYong Kim and jong Sao Choi, 'Content-based Transcoding for Dynamic Video Transmission', SPIE Symposium on Visual Communications and Image Processing, pp.1125-1132 2002 https://doi.org/10.1117/12.453037
  13. TaeYong Kim and Joon Hee Han, 'Model-based Discontinuity Evaluation in the DCT Domain', Signal Processing, Vol.81, No.4, pp.871-882, 200l https://doi.org/10.1016/S0165-1684(00)00261-9
  14. J. Choi and D. Park, 'A stable feedback control of the buffer state using the controlled langrange multiplier method', IEEE Transaction on Image Processing, Vol.3, pp.546-558, 1994 https://doi.org/10.1109/83.334986
  15. I. M. Pao and M. T. Sun, 'Encoding DCT coefficients based on rate-distortion measurement', Journal of Visual Communication and Image Representation, Vol.12, pp.29-43, 200l https://doi.org/10.1006/jvci.2000.0461
  16. R. L. Lagendijk, E. D. Frimout, and J. Biemond, 'Low-complexity rate-distortion optimal transcoding of MPEG I-frames', Signal Processing: Image Communication, Vol.15, pp.531-544, 2000 https://doi.org/10.1016/S0923-5965(99)00011-9
  17. A. Ortega, K Ramchandran, and M. Vetterli, 'Optimal Trellis-based buffered compression and fast approximations', IEEE Transaction on Image Processing, Vol.3, 26-40, 1994 https://doi.org/10.1109/83.265978
  18. L. J. Lin and A. Ortega, 'Bit-rate control using piecewise approximated rate-distortion characteristics', IEEE Transactions on Circuit and Systems for Video Technology, Vol.4, No.8, pp.446-459, 1998 https://doi.org/10.1109/76.709411
  19. Nicholas Yeadon, Francisco Garcia, David Hutchison, and Doug Shepherd, 'Continuous Media Filters for Heterogeneous Internetworking', Proceedings of SPIE-Multimedia Computing and Networking, 1996 https://doi.org/10.1117/12.235877
  20. Andrew B. Watson, 'Toward a perceptual video quality metric', IST/SPIE conference on Human Vision and Electronic Imaging, Vol.3299, pp.139-147, 1998 https://doi.org/10.1117/12.320105
  21. Bo Shen and Ishwar K Sethi, 'Convolution-Based Edge Detection for Image/Video in Block DCT Domain', Journal of Visual Communication and Image Representation, Vol.7, pp.411-423, 1996 https://doi.org/10.1006/jvci.1996.0035
  22. Brian C. Smith and Lawrence A. Rowe, 'Algorithms for Manipulating Compressed Images', IEEE Computer Graphics & Applications, pp.34-42, 1993 https://doi.org/10.1109/38.232097
  23. S. F. Chang and D. G. Messerschmitt, 'A new approach to decoding and composting motion compensated DCT-based images', IEEE Internat. Conf. on Acoustics, Speech, and Signal Processing, Vol.5, pp.421-424, 1993 https://doi.org/10.1109/ICASSP.1993.319837
  24. Robert M. Haralick and Linda G. Shapiro, Computer and Robot Vision, Addison Wesley, pp.605-606, 1992
  25. H. M. Hang and I. J. Chen, 'Source model for transform video coder and its application. Part I: fundamental theory', IEEE Transactions on Circuits and System for Video technology, Vol.2, No.7, pp.287-298, 1997 https://doi.org/10.1109/76.564108
  26. Z. He, Y. K Kim, and S. K Mitra, 'Low-delay rate control for DCT video coding via rho-domain source modeling', IEEE Transaction on Circuits and Systems for Video Technology, Vol.8, No.11, 2001 https://doi.org/10.1109/76.937431
  27. Chang-Shing Lee, Yau-Hwang Kuo, and Pac-Ta Yu, 'Weighted fuzzy mean filter for image processing', Fuzzy Sets and systems, Vol.89, pp.157-180, 1997 https://doi.org/10.1016/S0165-0114(96)00075-9
  28. M. Mancuso, R. De Luca, R. Poluzzi, and G. G. Rizzotto, 'A fuzzy decision directed filter for impulsive noise detection', Fuzzy Sets and systems, Vol.77, pp.111-116, 1996 https://doi.org/10.1016/0165-0114(95)00175-1