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| A NEW PREFILTER FOR MULTIWAVELET TRANSFROMS |
| Peng Zhiwei; Bao Zheng; Liao Guisheng |
| Institute of Electonic Engineering Xidian University Xi'an 710071 China |
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Abstract Prefiltering is indispensable for multiwavelet transforms. This paper proposes a prefilter with the length of l and an approximate order of 2 for GHM multi-wavelet, and proves that the order of prefilters for length 1 repeating signals cannot be or greater than 2 for GHM multi-wavelet, after analyzing the constructing ideas of various currently existing prefilters for GHM multi-wavelet.
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Received: 26 October 1998
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2001, Vol. 23 
