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: pjrec.cpp,v 1.6 2000/07/28 08:28:08 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_METHOD, O_ZEROPAD, O_FILTER_PARAM, O_BACKPROJ, O_PREINTERPOLATION_FACTOR, O_VERBOSE, O_TRACE, O_HELP, O_DEBUG, O_VERSION};
34 static struct option my_options[] =
36 {"interp", 1, 0, O_INTERP},
37 {"preinterpolation-factor", 1, 0, O_PREINTERPOLATION_FACTOR},
38 {"filter", 1, 0, O_FILTER},
39 {"filter-method", 1, 0, O_FILTER_METHOD},
40 {"zeropad", 1, 0, O_ZEROPAD},
41 {"filter-param", 1, 0, O_FILTER_PARAM},
42 {"backproj", 1, 0, O_BACKPROJ},
43 {"trace", 1, 0, O_TRACE},
44 {"debug", 0, 0, O_DEBUG},
45 {"verbose", 0, 0, O_VERBOSE},
46 {"help", 0, 0, O_HELP},
47 {"version", 0, 0, O_VERSION},
53 pjrec_usage (const char *program)
55 cout << "usage: " << fileBasename(program) << " raysum-file image-file nx-image ny-image [OPTIONS]" << endl;
56 cout << "Image reconstruction from raysum projections" << endl;
58 cout << " raysum-file Input raysum file" << endl;
59 cout << " image-file Output image file in SDF2D format" << endl;
60 cout << " nx-image Number of columns in output image" << endl;
61 cout << " ny-image Number of rows in output image" << endl;
62 cout << " --interp Interpolation method during backprojection" << endl;
63 cout << " nearest Nearest neighbor interpolation" << endl;
64 cout << " linear Linear interpolation" << endl;
65 #if HAVE_BSPLINE_INTERP
66 cout << " bspline B-spline interpolation" << endl;
68 cout << " --preinterpolate Preinterpolation factor (default = 1)\n";
69 cout << " Used only with frequency-based filtering\n";
70 cout << " --filter Filter name" << endl;
71 cout << " abs_bandlimit Abs * Bandlimiting (default)" << endl;
72 cout << " abs_sinc Abs * Sinc" << endl;
73 cout << " abs_cos Abs * Cosine" << endl;
74 cout << " abs_hamming Abs * Hamming" << endl;
75 cout << " shepp Shepp-Logan" << endl;
76 cout << " bandlimit Bandlimiting" << endl;
77 cout << " sinc Sinc" << endl;
78 cout << " cos Cosine" << endl;
79 cout << " triangle Triangle" << endl;
80 cout << " hamming Hamming" << endl;
81 cout << " --filter-method Filter method before backprojections\n";;
82 cout << " convolution Spatial filtering (default)\n";
83 cout << " fourier Frequency filtering with discete fourier\n";
84 cout << " fourier_table Frequency filtering with table lookup fourier\n";
85 cout << " fft Fast Fourier Transform\n";
87 cout << " fftw Fast Fourier Transform West library\n";
88 cout << " rfftw Fast Fourier Transform West (real-mode) library\n";
90 cout << " --zeropad n Set zeropad level (default = 0)\n";
91 cout << " set n to number of powers to two to pad\n";
92 cout << " --frequency-filter Set type of frequency filter\n";
93 cout << " direct Use direct frequency filter\n";
94 cout << " ifourier Use inverse fourier transform of spatial filter\n";
95 cout << " --backproj Backprojection Method" << endl;
96 cout << " trig Trigometric functions at every point" << endl;
97 cout << " table Trigometric functions with precalculated table" << endl;
98 cout << " diff Difference method" << endl;
99 cout << " diff2 Optimized difference method (default)" << endl;
100 cout << " idiff2 Optimized difference method with integer math" << endl;
101 cout << " idiff3 Highly-optimized difference method with integer math" << endl;
102 cout << " --filter-param Alpha level for Hamming filter" << endl;
103 cout << " --trace Set tracing to level" << endl;
104 cout << " none No tracing (default)" << endl;
105 cout << " text Text level tracing" << endl;
106 cout << " phm Trace phantom" << endl;
107 cout << " rays Trace allrays" << endl;
108 cout << " plot Trace plotting" << endl;
109 cout << " clipping Trace clipping" << endl;
110 cout << " --verbose Turn on verbose mode" << endl;
111 cout << " --debug Turn on debug mode" << endl;
112 cout << " --version Print version" << endl;
113 cout << " --help Print this help message" << endl;
118 static void ScatterProjectionsMPI (MPIWorld& mpiWorld, Projections& projGlobal, Projections& projLocal, const int debug);
119 static void ReduceImageMPI (MPIWorld& mpiWorld, ImageFile* imLocal, ImageFile* imGlobal);
124 pjrec_main (int argc, char * argv[])
126 Projections projGlobal;
127 ImageFile* imGlobal = NULL;
128 char* filenameProj = NULL;
129 char* filenameImage = NULL;
135 int optTrace = TRACE_NONE;
136 double optFilterParam = -1;
137 string optFilterName (SignalFilter::convertFilterIDToName (SignalFilter::FILTER_ABS_BANDLIMIT));
138 string optFilterMethodName (SignalFilter::convertFilterMethodIDToName (SignalFilter::FILTER_METHOD_CONVOLUTION));
139 string optInterpName (Backprojector::convertInterpIDToName (Backprojector::INTERP_LINEAR));
140 string optBackprojName (Backprojector::convertBackprojectIDToName (Backprojector::BPROJ_IDIFF3));
141 int optPreinterpolationFactor = 1;
145 int mpi_nview, mpi_ndet;
146 double mpi_detinc, mpi_rotinc, mpi_phmlen;
147 MPIWorld mpiWorld (argc, argv);
153 if (mpiWorld.getRank() == 0) {
156 int c = getopt_long(argc, argv, "", my_options, NULL);
165 optInterpName = optarg;
167 case O_PREINTERPOLATION_FACTOR:
168 optPreinterpolationFactor = strtol(optarg, &endptr, 10);
169 if (endptr != optarg + strlen(optarg)) {
170 pjrec_usage(argv[0]);
175 optFilterName = optarg;
177 case O_FILTER_METHOD:
178 optFilterMethodName = optarg;
181 optBackprojName = optarg;
184 optFilterParam = strtod(optarg, &endptr);
185 if (endptr != optarg + strlen(optarg)) {
186 pjrec_usage(argv[0]);
191 optZeroPad = strtol(optarg, &endptr, 10);
192 if (endptr != optarg + strlen(optarg)) {
193 pjrec_usage(argv[0]);
204 if ((optTrace = TraceLevel::convertTraceNameToID(optarg)) == TRACE_INVALID) {
205 pjrec_usage(argv[0]);
211 cout << "Version " << VERSION << endl;
213 cout << "Unknown version number" << endl;
218 pjrec_usage(argv[0]);
221 pjrec_usage(argv[0]);
226 if (optind + 4 != argc) {
227 pjrec_usage(argv[0]);
231 filenameProj = argv[optind];
233 filenameImage = argv[optind + 1];
235 nx = strtol(argv[optind + 2], &endptr, 10);
236 ny = strtol(argv[optind + 3], &endptr, 10);
238 ostringstream filterDesc;
239 if (optFilterParam >= 0)
240 filterDesc << optFilterName << ": alpha=" << optFilterParam;
242 filterDesc << optFilterName;
245 label << "pjrec: " << nx << "x" << ny << ", " << filterDesc.str() << ", " << optInterpName << ", preinterpolationFactor=" << optPreinterpolationFactor << ", " << optBackprojName;
246 remark = label.str();
249 cout << "Remark: " << remark << endl;
255 if (mpiWorld.getRank() == 0) {
256 projGlobal.read (filenameProj);
258 projGlobal.printScanInfo();
260 mpi_ndet = projGlobal.nDet();
261 mpi_nview = projGlobal.nView();
262 mpi_detinc = projGlobal.detInc();
263 mpi_phmlen = projGlobal.phmLen();
264 mpi_rotinc = projGlobal.rotInc();
267 TimerCollectiveMPI timerBcast (mpiWorld.getComm());
268 mpiWorld.BcastString (optBackprojName);
269 mpiWorld.BcastString (optFilterName);
270 mpiWorld.BcastString (optFilterMethodName);
271 mpiWorld.BcastString (optInterpName);
272 mpiWorld.getComm().Bcast (&optVerbose, 1, MPI::INT, 0);
273 mpiWorld.getComm().Bcast (&optDebug, 1, MPI::INT, 0);
274 mpiWorld.getComm().Bcast (&optTrace, 1, MPI::INT, 0);
275 mpiWorld.getComm().Bcast (&optFilterParam, 1, MPI::DOUBLE, 0);
276 mpiWorld.getComm().Bcast (&optZeroPad, 1, MPI::INT, 0);
277 mpiWorld.getComm().Bcast (&optPreinterpolationFactor, 1, MPI::INT, 0);
278 mpiWorld.getComm().Bcast (&mpi_ndet, 1, MPI::INT, 0);
279 mpiWorld.getComm().Bcast (&mpi_nview, 1, MPI::INT, 0);
280 mpiWorld.getComm().Bcast (&mpi_detinc, 1, MPI::DOUBLE, 0);
281 mpiWorld.getComm().Bcast (&mpi_phmlen, 1, MPI::DOUBLE, 0);
282 mpiWorld.getComm().Bcast (&mpi_rotinc, 1, MPI::DOUBLE, 0);
283 mpiWorld.getComm().Bcast (&nx, 1, MPI::INT, 0);
284 mpiWorld.getComm().Bcast (&ny, 1, MPI::INT, 0);
286 timerBcast.timerEndAndReport ("Time to broadcast variables");
288 mpiWorld.setTotalWorkUnits (mpi_nview);
290 Projections projLocal (mpiWorld.getMyLocalWorkUnits(), mpi_ndet);
291 projLocal.setDetInc (mpi_detinc);
292 projLocal.setPhmLen (mpi_phmlen);
293 projLocal.setRotInc (mpi_rotinc);
295 TimerCollectiveMPI timerScatter (mpiWorld.getComm());
296 ScatterProjectionsMPI (mpiWorld, projGlobal, projLocal, optDebug);
298 timerScatter.timerEndAndReport ("Time to scatter projections");
300 if (mpiWorld.getRank() == 0) {
301 imGlobal = new ImageFile (nx, ny);
304 imLocal = new ImageFile (nx, ny);
306 projGlobal.read (filenameProj);
308 projGlobal.printScanInfo();
310 imGlobal = new ImageFile (nx, ny);
314 TimerCollectiveMPI timerReconstruct (mpiWorld.getComm());
315 projLocal.reconstruct (*imLocal, optFilterName.c_str(), optFilterParam, optFilterMethodName.c_str(), optZeroPad, optInterpName.c_str(), optPreinterpolationFactor, optBackprojName.c_str(), optTrace);
317 timerReconstruct.timerEndAndReport ("Time to reconstruct");
319 TimerCollectiveMPI timerReduce (mpiWorld.getComm());
320 ReduceImageMPI (mpiWorld, imLocal, imGlobal);
322 timerReduce.timerEndAndReport ("Time to reduce image");
324 projGlobal.reconstruct (*imGlobal, optFilterName.c_str(), optFilterParam, optFilterMethodName.c_str(), optZeroPad, optInterpName.c_str(), optPreinterpolationFactor, optBackprojName.c_str(), optTrace);
328 if (mpiWorld.getRank() == 0)
331 double calcTime = timerProgram.timerEnd();
332 imGlobal->labelAdd (projGlobal.getLabel());
333 imGlobal->labelAdd (Array2dFileLabel::L_HISTORY, remark.c_str(), calcTime);
334 imGlobal->fileWrite (filenameImage);
336 cout << "Run time: " << calcTime << " seconds" << endl;
346 //////////////////////////////////////////////////////////////////////////////////////
347 // MPI Support Routines
349 //////////////////////////////////////////////////////////////////////////////////////
352 static void ScatterProjectionsMPI (MPIWorld& mpiWorld, Projections& projGlobal, Projections& projLocal, const int optDebug)
354 if (mpiWorld.getRank() == 0) {
355 for (int iProc = 0; iProc < mpiWorld.getNumProcessors(); iProc++) {
356 for (int iw = mpiWorld.getStartWorkUnit(iProc); iw <= mpiWorld.getEndWorkUnit(iProc); iw++) {
357 DetectorArray& detarray = projGlobal.getDetectorArray( iw );
358 int nDet = detarray.nDet();
359 DetectorValue* detval = detarray.detValues();
361 double viewAngle = detarray.viewAngle();
362 mpiWorld.getComm().Send(&nDet, 1, MPI::INT, iProc, 0);
363 mpiWorld.getComm().Send(&viewAngle, 1, MPI::DOUBLE, iProc, 0);
364 mpiWorld.getComm().Send(detval, nDet, MPI::FLOAT, iProc, 0);
369 for (int iw = 0; iw < mpiWorld.getMyLocalWorkUnits(); iw++) {
373 DetectorValue* detval = projLocal.getDetectorArray(iw).detValues();
375 mpiWorld.getComm().Recv(&nDet, 1, MPI::INT, 0, 0, status);
376 mpiWorld.getComm().Recv(&viewAngle, 1, MPI::DOUBLE, 0, 0, status);
377 mpiWorld.getComm().Recv(detval, nDet, MPI::FLOAT, 0, 0, status);
378 projLocal.getDetectorArray(iw).setViewAngle( viewAngle );
383 ReduceImageMPI (MPIWorld& mpiWorld, ImageFile* imLocal, ImageFile* imGlobal)
385 ImageFileArray vLocal = imLocal->getArray();
387 for (int ix = 0; ix < imLocal->nx(); ix++) {
388 void *recvbuf = NULL;
389 if (mpiWorld.getRank() == 0) {
390 ImageFileArray vGlobal = imGlobal->getArray();
391 recvbuf = vGlobal[ix];
393 mpiWorld.getComm().Reduce (vLocal[ix], recvbuf, imLocal->ny(), imLocal->getMPIDataType(), MPI::SUM, 0);
402 main (int argc, char* argv[])
407 retval = pjrec_main(argc, argv);
408 } catch (exception e) {
409 cerr << "Exception: " << e.what() << endl;
411 cerr << "Unknown exception" << endl;