39 static void reconstruct(
char* filename,
int N,
int M,
int iteration , 
int weight)
 
   43   double time,min_time,max_time,min_inh,max_inh;
 
   45   double w,epsilon=0.0000003;     
 
   49   FILE* fp,*fw,*fout_real,*fout_imag,*finh,*ftime;
 
   51   int flags = PRE_PHI_HUT| PRE_PSI |MALLOC_X| MALLOC_F_HAT|
 
   52                       MALLOC_F| FFTW_INIT| FFT_OUT_OF_PLACE;
 
   53   unsigned infft_flags = CGNR | PRECOMPUTE_DAMP;
 
   61   ftime=fopen(
"readout_time.dat",
"r");
 
   62   finh=fopen(
"inh.dat",
"r");
 
   64   min_time=INT_MAX; max_time=INT_MIN;
 
   67     fscanf(ftime,
"%le ",&time);
 
   76   Ts=(min_time+max_time)/2.0;
 
   79   min_inh=INT_MAX; max_inh=INT_MIN;
 
   82     fscanf(finh,
"%le ",&w);
 
   90   N3=ceil((
NFFT_MAX(fabs(min_inh),fabs(max_inh))*(max_time-min_time)/2.0+m/(2*sigma))*4*sigma);
 
   95   W= 
NFFT_MAX(fabs(min_inh),fabs(max_inh))/(0.5-((double) m)/N3);
 
   97   my_N[0]=N;my_n[0]=ceil(N*sigma);
 
   98   my_N[1]=N; my_n[1]=ceil(N*sigma);
 
   99   my_N[2]=N3; my_n[2]=ceil(N3*sigma);
 
  102   mri_inh_3d_init_guru(&my_plan, my_N, M, my_n, m, sigma, flags,
 
  103                       FFTW_MEASURE| FFTW_DESTROY_INPUT);
 
  106     infft_flags = infft_flags | PRECOMPUTE_WEIGHT;
 
  112   if(my_iplan.
flags & PRECOMPUTE_WEIGHT)
 
  114     fw=fopen(
"weights.dat",
"r");
 
  117         fscanf(fw,
"%le ",&my_iplan.
w[j]);
 
  123   if(my_iplan.
flags & PRECOMPUTE_DAMP)
 
  129         double r=sqrt(j2*j2+k2*k2);
 
  131           my_iplan.
w_hat[j*N+k]=0.0;
 
  133           my_iplan.
w_hat[j*N+k]=1.0;
 
  138   fp=fopen(filename,
"r");
 
  139   ftime=fopen(
"readout_time.dat",
"r");
 
  143     fscanf(fp,
"%le %le %le %le",&my_plan.plan.
x[3*j+0],&my_plan.plan.
x[3*j+1],&real,&imag);
 
  144     my_iplan.
y[j]=real+ _Complex_I*imag;
 
  145     fscanf(ftime,
"%le ",&my_plan.plan.
x[3*j+2]);
 
  147     my_plan.plan.
x[3*j+2] = (my_plan.plan.
x[3*j+2]-Ts)*W/N3;
 
  153   finh=fopen(
"inh.dat",
"r");
 
  156     fscanf(finh,
"%le ",&my_plan.w[j]);
 
  163     nfft_precompute_psi(&my_plan.plan);
 
  166       nfft_precompute_full_psi(&my_plan.plan);
 
  178   solver_before_loop_complex(&my_iplan);
 
  179   for(l=0;l<iteration;l++)
 
  184     fprintf(stderr,
"%e,  %i of %i\n",sqrt(my_iplan.
dot_r_iter),
 
  190   t = nfft_elapsed_seconds(t1,t0);
 
  192   fout_real=fopen(
"output_real.dat",
"w");
 
  193   fout_imag=fopen(
"output_imag.dat",
"w");
 
  195   for (j=0;j<N*N;j++) {
 
  197     my_iplan.
f_hat_iter[j]*=cexp(-2.0*_Complex_I*
PI*Ts*my_plan.w[j]*W);
 
  199     fprintf(fout_real,
"%le ",creal(my_iplan.
f_hat_iter[j]));
 
  200     fprintf(fout_imag,
"%le ",cimag(my_iplan.
f_hat_iter[j]));
 
  206   mri_inh_3d_finalize(&my_plan);
 
  210 int main(
int argc, 
char **argv)
 
  214     printf(
"usage: ./reconstruct_data_inh_3d FILENAME N M ITER WEIGHTS\n");
 
  218   reconstruct(argv[1],atoi(argv[2]),atoi(argv[3]),atoi(argv[4]),atoi(argv[5]));