The Transactions of the Korea Information Processing Society (한국정보처리학회논문지)

Korea Information Processing Society (한국정보처리학회)
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Fast VQ Codebook Search Algorithms Using Index Table

인덱스 테이블을 이용한 고속 VQ 코드북 탐색 알고리즘

  • 황재호 (극동정보대학 멀티미디어과) ;
  • 곽윤식 (충주대학교 컴퓨터공학과) ;
  • 홍충선 (경희대학교 전자정보학부) ;
  • 이대영 (경희대학교 전자정보학부)
  • Published : 2000.10.01
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Abstract

In this paper, we propose two fast VQ coclebook search algorithms efficient to the Wavelet/ VQ coding schemes. It is well known that the probability having large values in wavelet coefficient blocks is very low. In order to apply this property to codebook search, the index tables of the reordered codebook in each wavelet subband ae used. The exil condition in PDE can be satisfied in an earlystage by comparing the large coefficients of the codeword with their corresponding elements of input vector using the index tbles. As a result, search time can be reduced.

본 논문에서는 Wavelet/VQ 코딩 기법에 효율적인 두 가지의 고속 VQ 코드북 탐색 알고리즘을 제안한다. 웨이브렛 계수 블록 내에서 코드북의 코드워드들의 원소, 즉 웨이브렛 계수가 큰 값을 가질 확률이 적다. 이러한 특성을 코드북 탐색에 이용하기 위하여 각 서브밴드에서 코드워드의 에너지 크기로 재정렬된 인덱스 테이블을 이용한다. 코드북 탐색 시 인덱스 테이블을 이용하여 코드워드의 큰 계수 값과 그에 대응하는 입력벡터의 원소를 먼저 비교함으로써 PDE의 탈출 조건을 조기에 만족하게 되어 탐색 시간이 줄어들게 된다.

Keywords

References

  1. P. C. Cosman, R. M. Gray, M. V. Vetterli, 'Vector Quantization of Image Subbands : A Survey,' IEEE Trans. On Image Process., Vol.5, No 2, Feb 1996 https://doi.org/10.1109/83.480760
  2. C. D. Bel and R. M Gray, 'An Improvement of the Minimum Distortion Encoding Algorithm for Vector Quantization,' IEEE Trans Commun., Vol.COM-33, No.10, pp.1132-1133, Oct 1985
  3. S. H. Huang and S. H. Chen, 'Fast Encoding Algorithm for VQ-Based Image Coding,' Electronics Letters, Vol.26, No 19, Sep 1990
  4. W. Li and E. Salari, 'A Fast Vector Quantization Encoding Method for Image Compression,' IEEE Trans. On Cir. & Sys For Video Tech, Vol.5, No 2, Apr 1995 https://doi.org/10.1109/76.388060
  5. C. M. Huang, Q. Bi, G. S. Stiles, and R. W Harris, 'Fast Full Search Equivalent Encoding Algorithms for Image Compression Using Vector Quantization,' IEEE Trans On Image Process, Vol.1, No.3, July 1992 https://doi.org/10.1109/83.148613
  6. C H. Hsieh and Y. J. Liu, 'Fast Search Algorithms for Vector Quantization Images Using Multiple Triangle Inequalities and Wavelet Transform,' IEEE Trans On Image Process Vol.9, No.3, Mar 2000 https://doi.org/10.1109/83.826771
  7. S. W. Ra and J. K. Kim, 'A Fast Mean-Distance-Ordered Partial Codebook Search Algorithm for Image Vector Quantization,' IEEE Trans. Cir. & Sys.-II : Anal. & Dig Sig. Process., Vol 40, No.9, pp 576-579, Sep 1993 https://doi.org/10.1109/82.257335
  8. M. R. Soleymani and S. D. Morgera, 'A Fast MMSE Encoding Technique for Vector Quantization,' IEEE Trans. On Comm., Vol 37, No.6, pp.656-659, June 1989 https://doi.org/10.1109/26.31152
  9. G. Poggi, 'Fast Algorithm for Full-Search VQ Encoding,' Electronics Letters, Vol. 29, No.12, June 1993
  10. L. Jo and M. R. Kaimal, 'A Fast Second-Generation Encoding Algorithm for Vector Quantization,' IEEE Signal Processing Letters, Vol.6, No. 11, Nov 1999 https://doi.org/10.1109/97.796287
  11. C. H. Lee and L H Chen, 'A Fast Search Algorithm for Vector Quantization Using Mean Pyramids of Codewords,' IEEE Trans. On Commu., Vol 43, No.2, Apr 1995 https://doi.org/10.1109/26.380218
  12. M. Antonini, M. Barlaud, P Mathieu and I. Daubechies, 'Image Coding using Wavelet Transform,' IEEE Trans Image Processing, Vol 1, No2, PP 205-220, Apr. 1992 https://doi.org/10.1109/83.136597
  13. Y. Linde, A Buzo, and R. M. Gray, 'An Algorithm for Vector Quantizer Design,' IEEE, Trans. Commun., Vol.COM-28, pp.84-95 Jan 1980