서브밴드 영상의 VQ를 위한 고속 코드북 탐색 알고리즘

Fast Codebook Search Algorithm for VQ of Subband Images

  • 황재호 (극동정보대학 멀티미디어과) ;
  • 홍충선 (경희대학교 전자정보학부) ;
  • 이대영 (경희대학교 전자정보학부)
  • 발행 : 2000.10.13

초록

Two fast search algorithms are proposed for VQ encoding in subband/VQ coding schemes. These algorithms exploit the property of the transform domain that the large coefficients rarely exist in the decomposed subbands. And the exit condition of PDE algorithm can be satisfied by comparing the large values of the codeword with the corresponding ones of the input vector. The computational complexity can be reduced at the expense of memories without extra coding errors.

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