toolbox_wavelets.m

小波提升算法的实现

% toolbox_wavelets - wavelets related functions.
%
%   Functions that need Wavelab (mainly wrapper calls):
%       - atrou_transform - compute the "a trou" wavelet transform,  i.e. without subsampling.
%       - perform_wavelet_transform - just a wrapper to call the correct wavelet transform of WAVELAB
%   Helpers functions:
%       - compute_quadrant_selection - compute the indice for selecting a given quadrant
%       - plot_wavelet - plot wavelet using Mallat's ordering.
%   Wavelet transform using lifting implementation (symmetric boundary
%   condition):
%       - fwt_lifting - wavelet transform via lifting
%       - fwt_7_9 - biorthogonal 7/9 wavelet transform
%       - fwt_linear - biorthogonal linear wavelet transform with 2 vanishing moment (aka 5/3 transform).
%       - fwt_hyperbolic - multidimensional hyperbolic (i.e. fully tensorial) wavelet transform
%       - fwt_isotropic - multidimensional isotropic wavelet transform
%
%   Copyright (c) 2004 Gabriel Peyr