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Packed integer wavelet transform constructed by lifting scheme

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3 Author(s)
Chengjiang Lin ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA ; Bo Zhang ; Zheng, Y.F.

A new method for speeding up the integer reversible 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, the proposed method can save the decomposition/reconstruction time by up to 37 percent on 32-bit machines in comparison with the original wavelet transform algorithms. Furthermore, the packed integer wavelet transform requires much less working memory

Published in:

Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on  (Volume:6 )

Date of Conference:

15-19 Mar 1999