reorder_coefs.m

小波提升算法的实现

function y = reorder_coefs(x, J ,dir)

% reorder_coefs - reorder the wavelet coefficients.
%
%   y = reorder_coefs(x,J ,dir);
%
%   Reorder the 1D wavelet coef either
%   from 'in place' to 'ordered by scale' (if 'dir==1')
%   or from 'ordered by scale' to 'in place' (if 'dir==-1').
%
%   Copyright (c) 2003 Gabriel Peyr