www.gusucode.com > wavelet工具箱matlab源码程序 > wavelet/wavedemo/@rwvtree/merge.m
function x = merge(t,node,tnd) %MERGE Merge (recompose) the data of a node. % X = MERGE(T,N,TNDATA) recomposes the data X % associated to the node N of the data tree T, % using the data associated to the children of N. % % TNDATA is a cell array (ORDER x 1) or (1 x ORDER) % such that TNDATA{k} contains the data associated to % the k-th child of N. % % The method uses IDWT (respectively IDWT2) for % one-dimensional (respectively two-dimensional) data. % % This method overloads the DTREE method. % M. Misiti, Y. Misiti, G. Oppenheim, J.M. Poggi 09-Sep-1999. % Last Revision: 23-May-2003. % Copyright 1995-2004 The MathWorks, Inc. [order,dwtMode,Lo_R,Hi_R] = getwtbo(t,'order','dwtMode','Lo_R','Hi_R'); s = nodesize(t,node); switch order case 2 , x = idwt(tnd{2},tnd{1},Lo_R,Hi_R,max(s),'mode',dwtMode,'shift',0); case 4 x = idwt2(tnd{4},tnd{1},tnd{2},tnd{3},... Lo_R,Hi_R,s,'mode',dwtMode,'shift',[0 0]); end