1 /*****************************************************************************
5 ** Purpose: Reconstruct an image from projections
6 ** Programmer: Kevin Rosenberg
7 ** Date Started: Aug 1984
9 ** This is part of the CTSim program
10 ** Copyright (C) 1983-2000 Kevin Rosenberg
12 ** $Id: ctrec.cpp,v 1.11 2000/06/18 10:27:11 kevin Exp $
14 ** This program is free software; you can redistribute it and/or modify
15 ** it under the terms of the GNU General Public License (version 2) as
16 ** published by the Free Software Foundation.
18 ** This program is distributed in the hope that it will be useful,
19 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
20 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 ** GNU General Public License for more details.
23 ** You should have received a copy of the GNU General Public License
24 ** along with this program; if not, write to the Free Software
25 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 ******************************************************************************/
32 enum {O_INTERP, O_FILTER, O_FILTER_PARAM, O_BACKPROJ, O_VERBOSE, O_TRACE, O_HELP, O_DEBUG, O_VERSION};
34 static struct option my_options[] =
36 {"interp", 1, 0, O_INTERP},
37 {"filter", 1, 0, O_FILTER},
38 {"filter-param", 1, 0, O_FILTER_PARAM},
39 {"backproj", 1, 0, O_BACKPROJ},
40 {"trace", 1, 0, O_TRACE},
41 {"debug", 0, 0, O_DEBUG},
42 {"verbose", 0, 0, O_VERBOSE},
43 {"help", 0, 0, O_HELP},
44 {"version", 0, 0, O_VERSION},
50 ctrec_usage (const char *program)
52 cout << "usage: " << fileBasename(program) << " raysum-file image-file nx-image ny-image [OPTIONS]" << endl;
53 cout << "Image reconstruction from raysum projections" << endl;
55 cout << " raysum-file Input raysum file" << endl;
56 cout << " image-file Output image file in SDF2D format" << endl;
57 cout << " nx-image Number of columns in output image" << endl;
58 cout << " ny-image Number of rows in output image" << endl;
59 cout << " --interp Interpolation method during backprojection" << endl;
60 cout << " nearest Nearest neighbor interpolation" << endl;
61 cout << " linear Linear interpolation" << endl;
62 #if HAVE_BSPLINE_INTERP
63 cout << " bspline B-spline interpolation" << endl;
65 cout << " --filter Filter name" << endl;
66 cout << " abs_bandlimit Abs * Bandlimiting (default)" << endl;
67 cout << " abs_sinc Abs * Sinc" << endl;
68 cout << " abs_cos Abs * Cosine" << endl;
69 cout << " abs_hamming Abs * Hamming" << endl;
70 cout << " shepp Shepp-Logan" << endl;
71 cout << " bandlimit Bandlimiting" << endl;
72 cout << " sinc Sinc" << endl;
73 cout << " cos Cosine" << endl;
74 cout << " triangle Triangle" << endl;
75 cout << " hamming Hamming" << endl;
76 cout << " --backproj Backprojection Method" << endl;
77 cout << " trig Trigometric functions at every point" << endl;
78 cout << " table Trigometric functions with precalculated table" << endl;
79 cout << " diff Difference method" << endl;
80 cout << " diff2 Optimized difference method (default)" << endl;
81 cout << " idiff2 Optimized difference method with integer math" << endl;
82 cout << " --filter-param Alpha level for Hamming filter" << endl;
83 cout << " --trace Set tracing to level" << endl;
84 cout << " none No tracing (default)" << endl;
85 cout << " text Text level tracing" << endl;
86 cout << " phm Trace phantom" << endl;
87 cout << " rays Trace allrays" << endl;
88 cout << " plot Trace plotting" << endl;
89 cout << " clipping Trace clipping" << endl;
90 cout << " --verbose Turn on verbose mode" << endl;
91 cout << " --debug Turn on debug mode" << endl;
92 cout << " --version Print version" << endl;
93 cout << " --help Print this help message" << endl;
98 static void ScatterProjectionsMPI (MPIWorld& mpiWorld, Projections& projGlobal, Projections& projLocal, const int debug);
99 static void ReduceImageMPI (MPIWorld& mpiWorld, ImageFile* imLocal, ImageFile* imGlobal);
104 ctrec_main (int argc, char * argv[])
106 ImageFile *imGlobal = NULL;
107 Projections projGlobal;
108 char *pj_name, *im_filename = NULL;
113 int opt_trace = TRACE_NONE;
114 double opt_filter_param = 1;
115 FilterType opt_filter = FILTER_ABS_BANDLIMIT;
116 InterpolationType opt_interp = I_LINEAR;
117 int opt_interp_param = 1;
118 BackprojType opt_backproj = O_BPROJ_DIFF2;
122 int mpi_nview, mpi_ndet;
123 double mpi_detinc, mpi_rotinc, mpi_phmlen;
124 MPIWorld mpiWorld (argc, argv);
130 if (mpiWorld.getRank() == 0) {
133 int c = getopt_long(argc, argv, "", my_options, NULL);
142 if ((opt_interp = opt_set_interpolation(optarg)) < 0) {
143 ctrec_usage(argv[0]);
148 if ((opt_filter = opt_set_filter(optarg)) < 0) {
149 ctrec_usage(argv[0]);
154 if ((opt_backproj = opt_set_backproj(optarg)) < 0) {
155 ctrec_usage(argv[0]);
160 opt_filter_param = strtod(optarg, &endptr);
161 if (endptr != optarg + strlen(optarg)) {
162 ctrec_usage(argv[0]);
172 if ((opt_trace = opt_set_trace(optarg)) < 0) {
173 ctrec_usage(argv[0]);
179 cout << "Version " << VERSION << endl;
181 cout << "Unknown version number" << endl;
186 ctrec_usage(argv[0]);
189 ctrec_usage(argv[0]);
194 if (optind + 4 != argc) {
195 ctrec_usage(argv[0]);
199 pj_name = argv[optind];
201 im_filename = argv[optind + 1];
203 nx = strtol(argv[optind + 2], &endptr, 10);
204 ny = strtol(argv[optind + 3], &endptr, 10);
206 ostringstream filt_name;
207 if (opt_filter == FILTER_G_HAMMING || opt_filter == FILTER_ABS_G_HAMMING)
208 filt_name << name_of_filter (opt_filter) << ": alpha=" << opt_filter_param;
210 filt_name << name_of_filter (opt_filter);
213 label << "Reconstruct: " << nx << "x" << ny << ", " << filt_name.str() << ", " << name_of_interpolation (opt_interp) << ", " << name_of_backproj(opt_backproj);
214 remark = label.str();
217 cout << "Remark: " << remark << endl;
223 if (mpiWorld.getRank() == 0) {
224 projGlobal.read (pj_name);
226 projGlobal.printScanInfo();
228 mpi_ndet = projGlobal.nDet();
229 mpi_nview = projGlobal.nView();
230 mpi_detinc = projGlobal.detInc();
231 mpi_phmlen = projGlobal.phmLen();
232 mpi_rotinc = projGlobal.rotInc();
235 TimerCollectiveMPI timerBcast (mpiWorld.getComm());
236 mpiWorld.getComm().Bcast (&opt_verbose, 1, MPI::INT, 0);
237 mpiWorld.getComm().Bcast (&opt_debug, 1, MPI::INT, 0);
238 mpiWorld.getComm().Bcast (&opt_trace, 1, MPI::INT, 0);
239 mpiWorld.getComm().Bcast (&opt_filter, 1, MPI::INT, 0);
240 mpiWorld.getComm().Bcast (&opt_interp, 1, MPI::INT, 0);
241 mpiWorld.getComm().Bcast (&opt_filter_param, 1, MPI::DOUBLE, 0);
242 mpiWorld.getComm().Bcast (&opt_interp_param, 1, MPI::INT, 0);
243 mpiWorld.getComm().Bcast (&opt_backproj, 1, MPI::INT, 0);
244 mpiWorld.getComm().Bcast (&mpi_ndet, 1, MPI::INT, 0);
245 mpiWorld.getComm().Bcast (&mpi_nview, 1, MPI::INT, 0);
246 mpiWorld.getComm().Bcast (&mpi_detinc, 1, MPI::DOUBLE, 0);
247 mpiWorld.getComm().Bcast (&mpi_phmlen, 1, MPI::DOUBLE, 0);
248 mpiWorld.getComm().Bcast (&mpi_rotinc, 1, MPI::DOUBLE, 0);
249 mpiWorld.getComm().Bcast (&nx, 1, MPI::INT, 0);
250 mpiWorld.getComm().Bcast (&ny, 1, MPI::INT, 0);
252 timerBcast.timerEndAndReport ("Time to broadcast variables");
254 mpiWorld.setTotalWorkUnits (mpi_nview);
256 Projections projLocal (mpiWorld.getMyLocalWorkUnits(), mpi_ndet);
257 projLocal.setDetInc (mpi_detinc);
258 projLocal.setPhmLen (mpi_phmlen);
259 projLocal.setRotInc (mpi_rotinc);
261 TimerCollectiveMPI timerScatter (mpiWorld.getComm());
262 ScatterProjectionsMPI (mpiWorld, projGlobal, projLocal, opt_debug);
264 timerScatter.timerEndAndReport ("Time to scatter projections");
266 if (mpiWorld.getRank() == 0) {
267 imGlobal = new ImageFile (im_filename, nx, ny);
268 imGlobal->fileCreate();
271 imLocal = new ImageFile (nx, ny);
273 projGlobal.read (pj_name);
275 projGlobal.printScanInfo();
277 imGlobal = new ImageFile (im_filename, nx, ny);
278 imGlobal->fileCreate();
282 TimerCollectiveMPI timerReconstruct (mpiWorld.getComm());
283 proj_reconst (*imLocal, projLocal, opt_filter, opt_filter_param, opt_interp, opt_interp_param, opt_backproj, opt_trace);
285 timerReconstruct.timerEndAndReport ("Time to reconstruct");
287 TimerCollectiveMPI timerReduce (mpiWorld.getComm());
288 ReduceImageMPI (mpiWorld, imLocal, imGlobal);
290 timerReduce.timerEndAndReport ("Time to reduce image");
292 proj_reconst (*imGlobal, projGlobal, opt_filter, opt_filter_param, opt_interp, opt_interp_param, opt_backproj, opt_trace);
296 if (mpiWorld.getRank() == 0)
299 double calcTime = timerProgram.timerEnd();
300 imGlobal->arrayDataWrite ();
301 imGlobal->labelAdd (Array2dFileLabel::L_HISTORY, projGlobal.remark(), projGlobal.calcTime());
302 imGlobal->labelAdd (Array2dFileLabel::L_HISTORY, remark.c_str(), calcTime);
303 imGlobal->fileClose ();
305 cout << "Run time: " << calcTime << " seconds" << endl;
315 //////////////////////////////////////////////////////////////////////////////////////
316 // MPI Support Routines
318 //////////////////////////////////////////////////////////////////////////////////////
321 static void ScatterProjectionsMPI (MPIWorld& mpiWorld, Projections& projGlobal, Projections& projLocal, const int opt_debug)
323 if (mpiWorld.getRank() == 0) {
324 for (int iProc = 0; iProc < mpiWorld.getNumProcessors(); iProc++) {
325 for (int iw = mpiWorld.getStartWorkUnit(iProc); iw <= mpiWorld.getEndWorkUnit(iProc); iw++) {
326 DetectorArray& detarray = projGlobal.getDetectorArray( iw );
327 int nDet = detarray.nDet();
328 DetectorValue* detval = detarray.detValues();
330 double viewAngle = detarray.viewAngle();
331 mpiWorld.getComm().Send(&nDet, 1, MPI::INT, iProc, 0);
332 mpiWorld.getComm().Send(&viewAngle, 1, MPI::DOUBLE, iProc, 0);
333 mpiWorld.getComm().Send(detval, nDet, MPI::FLOAT, iProc, 0);
338 for (int iw = 0; iw < mpiWorld.getMyLocalWorkUnits(); iw++) {
342 DetectorValue* detval = projLocal.getDetectorArray(iw).detValues();
344 mpiWorld.getComm().Recv(&nDet, 1, MPI::INT, 0, 0, status);
345 mpiWorld.getComm().Recv(&viewAngle, 1, MPI::DOUBLE, 0, 0, status);
346 mpiWorld.getComm().Recv(detval, nDet, MPI::FLOAT, 0, 0, status);
347 projLocal.getDetectorArray(iw).setViewAngle( viewAngle );
352 ReduceImageMPI (MPIWorld& mpiWorld, ImageFile* imLocal, ImageFile* imGlobal)
354 ImageFileArray vLocal = imLocal->getArray();
356 for (int ix = 0; ix < imLocal->nx(); ix++) {
357 void *recvbuf = NULL;
358 if (mpiWorld.getRank() == 0) {
359 ImageFileArray vGlobal = imGlobal->getArray();
360 recvbuf = vGlobal[ix];
362 mpiWorld.getComm().Reduce (vLocal[ix], recvbuf, imLocal->ny(), imLocal->getMPIDataType(), MPI::SUM, 0);
371 main (int argc, char* argv[])
373 return (ctrec_main(argc, argv));