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0016 function [IMM,S,P]=Soft_B_denois_steerable(Im2,Var)
0017 ImDeg = Im2;
0018 desviacion=sqrt(Var);
0019
0020 NW=4;
0021 [pyrDeg,indDeg]=buildsfpyr(double(ImDeg),4,7);
0022 pyrEst=zeros(size(pyrDeg));
0023
0024 load indices_epsilon_4esc_8ori
0025 indices=indices*sqrt(Var)/sqrt(400);
0026 for escala=1:NW
0027 for ori=1:8
0028 [escala ori]
0029
0030 PP=[];
0031 A=[];
0032 for i=1:2^(9-escala)
0033 for j=1:2^(9-escala)
0034 pp=pos_s_pyr([escala ori i j],indDeg);
0035 A(i,j)=pyrDeg(pp);
0036 PP(i,j)=pp;
0037 end
0038 end
0039 subbanda=A;
0040
0041 QQ=1;
0042 MM=zeros(3,15*15);
0043 for s=logspace(-1.5,2.5,25)
0044 for p=linspace(0.35,2,20)
0045 l=likelihooddegradedaB([s p],subbanda,indices(PP(1,1))^2);
0046 MM(1,QQ)=s;
0047 MM(2,QQ)=p;
0048 MM(3,QQ)=l;
0049 QQ=QQ+1;
0050 end
0051 end
0052 [MN,IN]=min(MM(3,:));
0053 S(escala,ori)=MM(1,IN);
0054 P(escala,ori)=MM(2,IN);
0055
0056 pyrsubDeg = subbanda(:);
0057 lookup = [];
0058
0059 pasox=0.5;
0060 rango = [round(min(pyrsubDeg))-30:pasox:round(max(pyrsubDeg))+30];
0061 num2=[];den2=[];
0062 for valor=rango
0063 num = sum(pasox.*blsnum(rango,valor,S(escala,ori),P(escala,ori),desviacion));
0064 denom = sum(pasox.*blsdenom(rango,valor,S(escala,ori),P(escala,ori),desviacion));
0065 num2=[num2 num];
0066 den2=[den2 denom];
0067 lookup = [lookup num/denom];
0068 end
0069
0070 estimado=zeros(size(pyrsubDeg));
0071 for indice=1:length(pyrsubDeg)
0072 estimado(indice) = interp1(rango,lookup,pyrsubDeg(indice));
0073 end
0074 BB=reshape(estimado,2^(9-escala),2^(9-escala));
0075 pyrEst(PP)=BB;
0076 end
0077 end
0078 pyrEst(length(pyrDeg)-32*32+1:length(pyrDeg)) = pyrDeg(length(pyrDeg)-32*32+1:length(pyrDeg));
0079 IMM=reconsfpyr(pyrEst,indDeg);