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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 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

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Circuits and Systems for Video Technology, IEEE Transactions on  (Volume:10 ,  Issue: 8 )