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Customizing a discrete wavelet transform filter bank using the lifting scheme for improved compression ratios of an ECG

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3 Author(s)
G. McDarby ; Biomed. Syst. Lab., Univ. of New South Wales, Sydney, NSW, Australia ; C. Heneghan ; B. G. Cellar

The lifting scheme is used to adaptively change a biorthogonal filter bank, which implements a discrete wavelet transform (DWT), for improved compression of an ECG waveform. The filter bank is initialized using a Haar wavelet and the associated filters are then lifted so as to minimize a reconstruction error. This error is based on the difference between an input ECG and a reconstructed ECG using only a fixed number of absolute maximum coefficients in the wavelet transform. The algorithm used to find the minimum error is stochastic and iterative

Published in:

[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint  (Volume:2 )

Date of Conference:

Oct 1999