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 1.8 2000/06/13 16:20:31 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, RAYSUM *rsGlobal, RAYSUM *rsLocal, 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 RAYSUM *rsGlobal = NULL;
108 char *rs_name, *im_filename = NULL;
109 char remark[MAXREMARK];
114 int opt_trace = TRACE_NONE;
115 double opt_filter_param = 1;
116 FilterType opt_filter = FILTER_ABS_BANDLIMIT;
117 InterpolationType opt_interp = I_LINEAR;
118 int opt_interp_param = 1;
119 BackprojType opt_backproj = O_BPROJ_DIFF2;
124 int mpi_nview, mpi_ndet;
125 double mpi_detinc, mpi_rotinc, mpi_phmlen;
126 MPIWorld mpiWorld (argc, argv);
132 if (mpiWorld.getRank() == 0) {
135 int c = getopt_long(argc, argv, "", my_options, NULL);
144 if ((opt_interp = opt_set_interpolation(optarg)) < 0) {
145 ctrec_usage(argv[0]);
150 if ((opt_filter = opt_set_filter(optarg)) < 0) {
151 ctrec_usage(argv[0]);
156 if ((opt_backproj = opt_set_backproj(optarg)) < 0) {
157 ctrec_usage(argv[0]);
162 opt_filter_param = strtod(optarg, &endptr);
163 if (endptr != optarg + strlen(optarg)) {
164 ctrec_usage(argv[0]);
174 if ((opt_trace = opt_set_trace(optarg)) < 0) {
175 ctrec_usage(argv[0]);
181 cout << "Version " << VERSION << endl;
183 cout << "Unknown version number" << endl;
188 ctrec_usage(argv[0]);
191 ctrec_usage(argv[0]);
196 if (optind + 4 != argc) {
197 ctrec_usage(argv[0]);
201 rs_name = argv[optind];
203 im_filename = argv[optind + 1];
205 nx = strtol(argv[optind + 2], &endptr, 10);
206 ny = strtol(argv[optind + 3], &endptr, 10);
208 if (opt_filter == FILTER_G_HAMMING || opt_filter == FILTER_ABS_G_HAMMING)
209 snprintf (filt_name, sizeof(filt_name), "%s: alpha = %.2f",
210 name_of_filter (opt_filter), opt_filter_param);
212 snprintf (filt_name, sizeof(filt_name), "%s", name_of_filter (opt_filter));
214 snprintf (remark, sizeof(remark), "Reconstruct: %dx%d, %s, %s, %s",
215 nx, ny, filt_name, name_of_interpolation (opt_interp), name_of_backproj(opt_backproj));
218 cout << "Remark: " << remark << endl;
224 if (mpiWorld.getRank() == 0) {
225 rsGlobal = raysum_open (rs_name);
226 raysum_read (rsGlobal);
228 raysum_print_info(rsGlobal);
230 mpi_ndet = rsGlobal->ndet;
231 mpi_nview = rsGlobal->nview;
232 mpi_detinc = rsGlobal->det_inc;
233 mpi_phmlen = rsGlobal->phmlen;
234 mpi_rotinc = rsGlobal->rot_inc;
237 TimerCollectiveMPI timerBcast (mpiWorld.getComm());
238 mpiWorld.getComm().Bcast (&opt_verbose, 1, MPI::INT, 0);
239 mpiWorld.getComm().Bcast (&opt_debug, 1, MPI::INT, 0);
240 mpiWorld.getComm().Bcast (&opt_trace, 1, MPI::INT, 0);
241 mpiWorld.getComm().Bcast (&opt_filter, 1, MPI::INT, 0);
242 mpiWorld.getComm().Bcast (&opt_interp, 1, MPI::INT, 0);
243 mpiWorld.getComm().Bcast (&opt_filter_param, 1, MPI::DOUBLE, 0);
244 mpiWorld.getComm().Bcast (&opt_interp_param, 1, MPI::INT, 0);
245 mpiWorld.getComm().Bcast (&opt_backproj, 1, MPI::INT, 0);
246 mpiWorld.getComm().Bcast (&mpi_ndet, 1, MPI::INT, 0);
247 mpiWorld.getComm().Bcast (&mpi_nview, 1, MPI::INT, 0);
248 mpiWorld.getComm().Bcast (&mpi_detinc, 1, MPI::DOUBLE, 0);
249 mpiWorld.getComm().Bcast (&mpi_phmlen, 1, MPI::DOUBLE, 0);
250 mpiWorld.getComm().Bcast (&mpi_rotinc, 1, MPI::DOUBLE, 0);
251 mpiWorld.getComm().Bcast (&nx, 1, MPI::INT, 0);
252 mpiWorld.getComm().Bcast (&ny, 1, MPI::INT, 0);
254 timerBcast.timerEndAndReport ("Time to broadcast variables");
256 mpiWorld.setTotalWorkUnits (mpi_nview);
258 rsLocal = raysum_create (NULL, mpiWorld.getMyLocalWorkUnits(), mpi_ndet);
259 rsLocal->ndet = mpi_ndet;
260 rsLocal->nview = mpi_nview;
261 rsLocal->det_inc = mpi_detinc;
262 rsLocal->phmlen = mpi_phmlen;
263 rsLocal->rot_inc = mpi_rotinc;
265 TimerCollectiveMPI timerScatter (mpiWorld.getComm());
266 ScatterProjectionsMPI (mpiWorld, rsGlobal, rsLocal, opt_debug);
268 timerScatter.timerEndAndReport ("Time to scatter projections");
270 if (mpiWorld.getRank() == 0) {
271 imGlobal = new ImageFile (im_filename, nx, ny);
272 imGlobal->fileCreate();
275 imLocal = new ImageFile (nx, ny);
277 rsGlobal = raysum_open (rs_name);
278 raysum_read (rsGlobal);
280 raysum_print_info(rsGlobal);
282 imGlobal = new ImageFile (im_filename, nx, ny);
283 imGlobal->fileCreate();
287 TimerCollectiveMPI timerReconstruct (mpiWorld.getComm());
288 proj_reconst (*imLocal, rsLocal, opt_filter, opt_filter_param, opt_interp, opt_interp_param, opt_backproj, opt_trace);
290 timerReconstruct.timerEndAndReport ("Time to reconstruct");
292 TimerCollectiveMPI timerReduce (mpiWorld.getComm());
293 ReduceImageMPI (mpiWorld, imLocal, imGlobal);
295 timerReduce.timerEndAndReport ("Time to reduce image");
297 proj_reconst (*imGlobal, rsGlobal, opt_filter, opt_filter_param, opt_interp, opt_interp_param, opt_backproj, opt_trace);
301 if (mpiWorld.getRank() == 0)
304 raysum_close (rsGlobal);
305 double calctime = timerProgram.timerEnd();
306 imGlobal->arrayDataWrite ();
307 imGlobal->labelAdd (Array2dFileLabel::L_HISTORY, rsGlobal->remark, rsGlobal->calctime);
308 imGlobal->labelAdd (Array2dFileLabel::L_HISTORY, remark, calctime);
309 imGlobal->fileClose ();
311 cout << "Run time: " << calctime << " seconds" << endl;
321 //////////////////////////////////////////////////////////////////////////////////////
322 // MPI Support Routines
324 //////////////////////////////////////////////////////////////////////////////////////
327 static void ScatterProjectionsMPI (MPIWorld& mpiWorld, RAYSUM *rsGlobal, RAYSUM *rsLocal, const int opt_debug)
329 if (mpiWorld.getRank() == 0) {
330 for (int iProc = 0; iProc < mpiWorld.getNumProcessors(); iProc++) {
331 for (int iw = mpiWorld.getStartWorkUnit(iProc); iw <= mpiWorld.getEndWorkUnit(iProc); iw++) {
332 mpiWorld.getComm().Send(&rsGlobal->view[iw]->ndet, 1, MPI::INT, iProc, 0);
333 mpiWorld.getComm().Send(&rsGlobal->view[iw]->view_angle, 1, MPI::DOUBLE, iProc, 0);
334 mpiWorld.getComm().Send(rsGlobal->view[iw]->detval, rsGlobal->ndet, MPI::FLOAT, iProc, 0);
339 for (int iw = 0; iw < mpiWorld.getMyLocalWorkUnits(); iw++) {
341 mpiWorld.getComm().Recv(&rsLocal->view[iw]->ndet, 1, MPI::INT, 0, 0, status);
342 mpiWorld.getComm().Recv(&rsLocal->view[iw]->view_angle, 1, MPI::DOUBLE, 0, 0, status);
343 mpiWorld.getComm().Recv(rsLocal->view[iw]->detval, rsLocal->ndet, MPI::FLOAT, 0, 0, status);
345 rsLocal->nview = mpiWorld.getMyLocalWorkUnits();
349 ReduceImageMPI (MPIWorld& mpiWorld, ImageFile* imLocal, ImageFile* imGlobal)
351 ImageFileArray vLocal = imLocal->getArray();
353 for (int ix = 0; ix < imLocal->nx(); ix++) {
354 void *recvbuf = NULL;
355 if (mpiWorld.getRank() == 0) {
356 ImageFileArray vGlobal = imGlobal->getArray();
357 recvbuf = vGlobal[ix];
359 mpiWorld.getComm().Reduce (vLocal[ix], recvbuf, imLocal->ny(), imLocal->getMPIDataType(), MPI::SUM, 0);
368 main (int argc, char* argv[])
370 return (ctrec_main(argc, argv));