perform_79_transform_slow.m

小波提升算法的实现

function y = perform_79_transform_slow(x, Jmin, dir, options)

% perform_79_transform_slow - biorthogonal 7/9 wavelet transform
%
%   y = perform_79_transform_slow(x, Jmin, dir, options);
%
%   Perform a 1D in place
%   wavelet transform of 'x' using a 7/9 wavelet.
%   The boundary conditions are handled using symmetric reflexion.
%
%   'options' is an (optional) structure that can contain:
%       - 'verb' : control verbosity.
%       - 'dir' : direction of the transform (1 : fwd, -1 : bwd)
%
%   Copyright (c) 2003 Gabriel Peyr