  Given a lowpass filter, finding a dual lowpass filter is an essential step in
constructing non-redundant wavelet filter banks. Obtaining dual lowpass filters
is not an easy task. In this paper, we introduce a new method called committee
algorithm that builds a dual filter straightforwardly from two
easily-constructible lowpass filters. It allows to design a wide range of new
wavelet filter banks. An example based on the family of Burt-Adelson's 1-D
Laplacian filters is given.
