www.gusucode.com > wavelet工具箱matlab源码程序 > wavelet/wavelet/lsdual.m
function LSR = lsdual(LS) %LSDUAL Dual lifting scheme. % LSD = LSDUAL(LS) returns the lifting scheme LSD % associated to LS. LS and LSD are issued of the % same polyphase matrix factorisation PMF, where % PMF = LS2PMF(LS). So [LS,LSD] = PMF2LS(PMF,'t'). % % For more information about lifting schemes type: lsinfo. % % N.B.: LS = LSDUAL(LSDUAL(LS)). % M. Misiti, Y. Misiti, G. Oppenheim, J.M. Poggi 26-Jun-2002. % Last Revision: 26-Jun-2003. % Copyright 1995-2004 The MathWorks, Inc. [PMF,dummy] = ls2pmf(LS,'t'); [dummy,LSR] = pmf2ls(PMF,'t');