conjgrad.m

来自「老外写的小波变换的工具箱」· M 代码 · 共 26 行

function [fnew,pnew,rnew,Lp] = ConjGrad(f,p,pold,r,u,J0,Lpold);

%Lp    	= L(u,FWT_Dyad(p,J0));
Lp    	= L(u.*FWT_ATrou(p,J0));
lambda 	= (r'*p) / (p'*Lp);
fnew 	= f + lambda * p;
rnew	= r - lambda * Lp;
pnew	= Lp - (Lp'*Lp) / (p'*Lp) * p;
if ~(pold == 0),
    pnew = pnew  - (Lp'*Lpold) / (pold'*Lpold) * pold;
end

% Written by Maureen Clerc and Jerome Kalifa, 1997
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