function MW = perform_wavelet_transform(M,Jmin,dir, options)

% perform_wavelet_transform - a wavelet transform
%
%   MW = perform_wavelet_transform(M,Jmin,dir,options);
%
%   You can replace this code with your favorite
%   wavelet transform.
%
%   MW must be stored in "Mallat's order", 
%   ie ie has the same size as M, with various
%   scales and orientation packed from up-left 
%   to bottom right.
%
%   Copyright (c) 2005 Gabriel Peyr