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Mplanesignoi.c
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Mplanesignoi.c
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/* Signal and noise separation using plane-wave destruction filters.
If n3=1 in the output, outputs both signal and noise. Otherwise, only signal.
*/
/*
Copyright (C) 2004 University of Texas at Austin
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <rsf.h>
#include "allp2.h"
#include "planesignoi.h"
int main(int argc, char* argv[])
{
int i, n1, n2, n12, nj1, nj2, niter, nw, n3, i3;
float eps, *d, *s, *nd, **nn, **ss;
bool verb, drift;
sf_file in, out, ndip, sdip;
sf_init (argc,argv);
in = sf_input("in");
ndip = sf_input("ndip");
sdip = sf_input("sdip");
out = sf_output("out");
if (!sf_histint(in,"n1",&n1)) sf_error("No n1= in input");
if (!sf_histint(in,"n2",&n2)) sf_error("No n2= in input");
n12 = n1*n2;
n3 = sf_leftsize(in,2);
if (1==n3) sf_putint (out,"n3",2);
if (!sf_getint ("niter",&niter)) niter=50;
/* maximum number of iterations */
if (!sf_getfloat ("eps",&eps)) eps=1.;
/* regularization parameter */
if (!sf_getint("order",&nw)) nw=1;
/* [1,2,3] accuracy order */
if (nw < 1 || nw > 3)
sf_error ("Unsupported nw=%d, choose between 1 and 3",nw);
if (!sf_getint("nj1",&nj1)) nj1=1;
/* antialiasing for noise dip */
if (!sf_getint("nj2",&nj2)) nj2=1;
/* antialiasing for signal dip */
if (!sf_getbool("drift",&drift)) drift=false;
/* if shift filter */
if (!sf_getbool("verb",&verb)) verb = false;
/* verbosity flag */
nd = sf_floatalloc(2*n12);
s = sf_floatalloc(n12);
d = sf_floatalloc(n12);
nn = sf_floatalloc2(n1,n2);
ss = sf_floatalloc2(n1,n2);
for (i=0; i < n12; i++) {
nd[n12+i] = 0.;
}
planesignoi_init (nw, nj1,nj2, n1,n2, drift, nn, ss, eps);
for (i3=0; i3 < n3; i3++) {
sf_floatread (d,n12,in);
sf_floatread (nn[0],n12,ndip);
sf_floatread (ss[0],n12,sdip);
allpass22_init(allpass2_init(nw,nj1,n1,n2,drift,nn));
allpass21_lop (false,false,n12,n12,d,nd);
sf_solver (planesignoi_lop, sf_cgstep, n12, n12*2, s, nd, niter,
"verb", verb, "end");
sf_cgstep_close();
sf_floatwrite(s,n12,out);
if (1==n3) {
for (i=0; i < n12; i++) {
d[i] -= s[i];
}
sf_floatwrite(d,n12,out);
}
}
exit(0);
}