reorder_coefs.m

来自「基于wavelet和bandelet的spiht图像压缩！」· M 代码 · 共 13 行

function y = reorder_coefs(x, Jmin ,dir)

% reorder_coefs - reorder the wavelet coefficients.
%
%   y = reorder_coefs(x,Jmin ,dir);
%
%   Reorder the 1D or 2D wavelet coef either
%   from 'in place' to 'ordered by scale' (if 'dir==1')
%   or from 'ordered by scale' to 'in place' (if 'dir==-1').
%
%   IMPORTANT: for the moment, works only on power of two data length.
%
%   Copyright (c) 2005 Gabriel Peyr