Packed integer wavelet transform constructed by lifting scheme

  • Authors:

  • Chengjiang Lin;Bo Zhang;Y. F. Zheng

  • Affiliations:

  • Dept. of Electr. Eng., Ohio State Univ., Columbus, OH;-;-

  • Venue:
  • IEEE Transactions on Circuits and Systems for Video Technology
  • Year:
  • 2000

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Abstract

A new method for speeding up the integer wavelet transforms constructed by the lifting scheme is proposed. The proposed method packs multiple pixels (wavelet coefficients) in a single word; therefore, it can make use of the 32-bit or 64-bit computational capability of modern computers to accomplish multiple addition/subtraction operations in one instruction cycle. As a result, our method can save the decomposition/reconstruction time by up to 37% on 32-bit machines and require much less working memory in comparison with the original wavelet transform algorithms