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0012 function [ImR] = svr_nl_decoder(K,exponente,directorio,fichero)
0013 Lb = 16;
0014 Li = 256;
0015
0016 cd(directorio)
0017 unzip([fichero '.zip']);
0018 ristra = read_code_svr_nl([fichero '.bin']);
0019
0020 delete([fichero '.bin']);
0021 TheCode = zeros(256,255);
0022
0023 normaliz = [3 ristra(1)];
0024 extr_err = ristra(2:3);
0025 QE = reshape(ristra(4:3+256),16,16);
0026 bits = ristra(260);
0027
0028 ristra = ristra(261:end);
0029
0030 [TheCode] = inv_rle(ristra);
0031
0032 NumNiv = 2^bits;
0033 MM = 0.8;
0034
0035 TheRealCode = TheCode * MM / NumNiv;
0036
0037 N = round(0.9 * 40);
0038 qe = (extr_err(2) - extr_err(1)) * QE / (N - 1) + extr_err(1);
0039
0040 Lmq = iimdpcm(qe,1,100);
0041 DC = 16 * Lmq;
0042 DC = DC';
0043 DC = DC(:);
0044
0045 cero = 1;
0046 aa = zeros(Lb);
0047 [h,alpha,beta,gamm] = constrains_resp(exponente,cero);
0048 [h_a,r,GR,alfa2d,beta2d] = respue5(aa,alpha,beta,gamm,h,0);
0049
0050 fprintf('Recovering the image:\n');
0051 fprintf(' Inverting from SVM weights to the non-linear domain\n');
0052 fprintf(' Inverting from the non-linear domain to DCT\n');
0053 z = 1;
0054 Db = diag(beta2d);
0055 Identidad = eye(size(h));
0056
0057 TheRealCode2 = TheRealCode';
0058
0059 for i=1:Lb:(Li-1)
0060 fprintf('.');
0061 for j=1:Lb:(Li-1)
0062
0063 r_recon = K * TheRealCode2(:,z);
0064 signosr = r_recon < 0;
0065 r_recon = [0; abs(r_recon)];
0066
0067 Dr = diag(r_recon);
0068 ac = ((inv(Identidad-Dr*h)*Db*r_recon).^(1/gamm))./alfa2d;
0069
0070 ac_c = ac(2:end);
0071 acs = ac_c.*(signosr==0) - ac_c.*(signosr>0);
0072 acs = [0;acs];
0073 acs = dezigzag(acs);
0074
0075 acs(1,1) = DC(z);
0076 dctc1(i:(i+(Lb-1)),j:(j+(Lb-1))) = acs;
0077 z = z+1;
0078 end
0079 end
0080 fprintf(' Inverting from DCT to spatial domain\n');
0081
0082 dctc1i = icontra2(dctc1,Lmq,4,normaliz);
0083
0084 ImR = real(idct2r(dctc1i,4));