wp2wtree.m
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上传日期:2013-01-09
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- function [Ts,Ds,n2m] = wp2wtree(Ts,Ds)
- %WP2WTREE Extract wavelet tree from wavelet packet tree.
- % [T,D] = WP2WTREE(T,D) computes the modified tree
- % structure T and data structure D (see MAKETREE),
- % corresponding to the wavelet decomposition tree.
- %
- % See also MAKETREE, WPDEC, WPDEC2.
- % M. Misiti, Y. Misiti, G. Oppenheim, J.M. Poggi 12-Mar-96.
- % Last Revision: 04-May-1999.
- % Copyright 1995-2002 The MathWorks, Inc.
- % $Revision: 1.13 $
- % Check arguments.
- if errargn(mfilename,nargin,[2],nargout,[2:3]), error('*'); end
- depth = wtreemgr('depth',Ts);
- if depth==0
- n2m = [];
- return
- end
- order = wtreemgr('order',Ts);
- an = wtreemgr('allnodes',Ts);
- tn = wtreemgr('tnodes',Ts);
- ind_an = wcommon(an,tn);
- an = an(ind_an==0);
- [d,p] = ind2depo(order,an);
- n2m = [];
- for k=1:order-1
- n2m = [n2m ; an(p==k)];
- end
- for n = n2m(:)'
- [Ts,Ds] = wpjoin(Ts,Ds,n);
- end