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In conventional wavelet transforms, prefiltering is not necessary due to the lowpass property of a scaling function. This is no longer true for multiwavelet transforms. A novel adaptive multiwavelet prefilter is presented which is designed to overcome this problem. Simulation results show that the approximation accuracy of the prefiltering algorithm is satisfactory.
Inspec keywords: adaptive filters; wavelet transforms
Other keywords:
Subjects: Integral transforms; Filtering methods in signal processing