--- /dev/null
+/*****************************************************************************
+** FILE IDENTIFICATION
+**
+** Name: pjrec.cpp
+** Purpose: Reconstruct an image from projections
+** Programmer: Kevin Rosenberg
+** Date Started: Aug 1984
+**
+** This is part of the CTSim program
+** Copyright (C) 1983-2000 Kevin Rosenberg
+**
+** $Id: pjrec.cpp,v 1.1 2000/06/26 21:15:24 kevin Exp $
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License (version 2) as
+** published by the Free Software Foundation.
+**
+** 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 "ct.h"
+#include "timer.h"
+
+
+enum {O_INTERP, O_FILTER, O_FILTER_PARAM, O_BACKPROJ, O_VERBOSE, O_TRACE, O_HELP, O_DEBUG, O_VERSION};
+
+static struct option my_options[] =
+{
+ {"interp", 1, 0, O_INTERP},
+ {"filter", 1, 0, O_FILTER},
+ {"filter-param", 1, 0, O_FILTER_PARAM},
+ {"backproj", 1, 0, O_BACKPROJ},
+ {"trace", 1, 0, O_TRACE},
+ {"debug", 0, 0, O_DEBUG},
+ {"verbose", 0, 0, O_VERBOSE},
+ {"help", 0, 0, O_HELP},
+ {"version", 0, 0, O_VERSION},
+ {0, 0, 0, 0}
+};
+
+
+void
+pjrec_usage (const char *program)
+{
+ cout << "usage: " << fileBasename(program) << " raysum-file image-file nx-image ny-image [OPTIONS]" << endl;
+ cout << "Image reconstruction from raysum projections" << endl;
+ cout << endl;
+ cout << " raysum-file Input raysum file" << endl;
+ cout << " image-file Output image file in SDF2D format" << endl;
+ cout << " nx-image Number of columns in output image" << endl;
+ cout << " ny-image Number of rows in output image" << endl;
+ cout << " --interp Interpolation method during backprojection" << endl;
+ cout << " nearest Nearest neighbor interpolation" << endl;
+ cout << " linear Linear interpolation" << endl;
+#if HAVE_BSPLINE_INTERP
+ cout << " bspline B-spline interpolation" << endl;
+#endif
+ cout << " --filter Filter name" << endl;
+ cout << " abs_bandlimit Abs * Bandlimiting (default)" << endl;
+ cout << " abs_sinc Abs * Sinc" << endl;
+ cout << " abs_cos Abs * Cosine" << endl;
+ cout << " abs_hamming Abs * Hamming" << endl;
+ cout << " shepp Shepp-Logan" << endl;
+ cout << " bandlimit Bandlimiting" << endl;
+ cout << " sinc Sinc" << endl;
+ cout << " cos Cosine" << endl;
+ cout << " triangle Triangle" << endl;
+ cout << " hamming Hamming" << endl;
+ cout << " --backproj Backprojection Method" << endl;
+ cout << " trig Trigometric functions at every point" << endl;
+ cout << " table Trigometric functions with precalculated table" << endl;
+ cout << " diff Difference method" << endl;
+ cout << " diff2 Optimized difference method (default)" << endl;
+ cout << " idiff2 Optimized difference method with integer math" << endl;
+ cout << " --filter-param Alpha level for Hamming filter" << endl;
+ cout << " --trace Set tracing to level" << endl;
+ cout << " none No tracing (default)" << endl;
+ cout << " text Text level tracing" << endl;
+ cout << " phm Trace phantom" << endl;
+ cout << " rays Trace allrays" << endl;
+ cout << " plot Trace plotting" << endl;
+ cout << " clipping Trace clipping" << endl;
+ cout << " --verbose Turn on verbose mode" << endl;
+ cout << " --debug Turn on debug mode" << endl;
+ cout << " --version Print version" << endl;
+ cout << " --help Print this help message" << endl;
+}
+
+
+#ifdef HAVE_MPI
+static void ScatterProjectionsMPI (MPIWorld& mpiWorld, Projections& projGlobal, Projections& projLocal, const int debug);
+static void ReduceImageMPI (MPIWorld& mpiWorld, ImageFile* imLocal, ImageFile* imGlobal);
+#endif
+
+
+int
+pjrec_main (int argc, char * argv[])
+{
+ Projections projGlobal;
+ ImageFile* imGlobal = NULL;
+ char* filenameProj = NULL;
+ char* filenameImage = NULL;
+ string remark;
+ char *endptr;
+ int optVerbose = 0;
+ int optDebug = 0;
+ int optTrace = TRACE_NONE;
+ double optFilterParam = -1;
+ string optFilterName = SignalFilter::FILTER_ABS_BANDLIMIT_STR;
+ string optInterpName = Backprojector::INTERP_LINEAR_STR;
+ string optBackprojName = Backprojector::BPROJ_IDIFF2_STR;
+ // string optFilterMethodName = SignalFilter::FILTER_METHOD_CONVOLUTION_STR;
+ int optInterpParam = 1;
+ int nx, ny;
+#ifdef HAVE_MPI
+ ImageFile* imLocal;
+ int mpi_nview, mpi_ndet;
+ double mpi_detinc, mpi_rotinc, mpi_phmlen;
+ MPIWorld mpiWorld (argc, argv);
+#endif
+
+ Timer timerProgram;
+
+#ifdef HAVE_MPI
+ if (mpiWorld.getRank() == 0) {
+#endif
+ while (1) {
+ int c = getopt_long(argc, argv, "", my_options, NULL);
+ char *endptr = NULL;
+
+ if (c == -1)
+ break;
+
+ switch (c)
+ {
+ case O_INTERP:
+ optInterpName = optarg;
+ break;
+ case O_FILTER:
+ optFilterName = optarg;
+ break;
+ case O_BACKPROJ:
+ optBackprojName = optarg;
+ break;
+ case O_FILTER_PARAM:
+ optFilterParam = strtod(optarg, &endptr);
+ if (endptr != optarg + strlen(optarg)) {
+ pjrec_usage(argv[0]);
+ }
+ break;
+ case O_VERBOSE:
+ optVerbose = 1;
+ break;
+ case O_DEBUG:
+ optDebug = 1;
+ break;
+ case O_TRACE:
+ if ((optTrace = opt_set_trace(optarg)) < 0) {
+ pjrec_usage(argv[0]);
+ return (1);
+ }
+ break;
+ case O_VERSION:
+#ifdef VERSION
+ cout << "Version " << VERSION << endl;
+#else
+ cout << "Unknown version number" << endl;
+#endif
+ return (0);
+ case O_HELP:
+ case '?':
+ pjrec_usage(argv[0]);
+ return (0);
+ default:
+ pjrec_usage(argv[0]);
+ return (1);
+ }
+ }
+
+ if (optind + 4 != argc) {
+ pjrec_usage(argv[0]);
+ return (1);
+ }
+
+ filenameProj = argv[optind];
+
+ filenameImage = argv[optind + 1];
+
+ nx = strtol(argv[optind + 2], &endptr, 10);
+ ny = strtol(argv[optind + 3], &endptr, 10);
+
+ ostringstream filterDesc;
+ if (optFilterParam >= 0)
+ filterDesc << optFilterName << ": alpha=" << optFilterParam;
+ else
+ filterDesc << optFilterName;
+
+ ostringstream label;
+ label << "pjrec: " << nx << "x" << ny << ", " << filterDesc.str() << ", " << optInterpName << ", " << optBackprojName;
+ remark = label.str();
+
+ if (optVerbose)
+ cout << "Remark: " << remark << endl;
+#ifdef HAVE_MPI
+ }
+#endif
+
+#ifdef HAVE_MPI
+ if (mpiWorld.getRank() == 0) {
+ projGlobal.read (filenameProj);
+ if (optVerbose)
+ projGlobal.printScanInfo();
+
+ mpi_ndet = projGlobal.nDet();
+ mpi_nview = projGlobal.nView();
+ mpi_detinc = projGlobal.detInc();
+ mpi_phmlen = projGlobal.phmLen();
+ mpi_rotinc = projGlobal.rotInc();
+ }
+
+ TimerCollectiveMPI timerBcast (mpiWorld.getComm());
+ mpiWorld.BcastString (optBackprojName);
+ mpiWorld.BcastString (optFilterName);
+ mpiWorld.BcastString (optInterpName);
+ mpiWorld.getComm().Bcast (&optVerbose, 1, MPI::INT, 0);
+ mpiWorld.getComm().Bcast (&optDebug, 1, MPI::INT, 0);
+ mpiWorld.getComm().Bcast (&optTrace, 1, MPI::INT, 0);
+ mpiWorld.getComm().Bcast (&optFilterParam, 1, MPI::DOUBLE, 0);
+ mpiWorld.getComm().Bcast (&optInterpParam, 1, MPI::INT, 0);
+ mpiWorld.getComm().Bcast (&mpi_ndet, 1, MPI::INT, 0);
+ mpiWorld.getComm().Bcast (&mpi_nview, 1, MPI::INT, 0);
+ mpiWorld.getComm().Bcast (&mpi_detinc, 1, MPI::DOUBLE, 0);
+ mpiWorld.getComm().Bcast (&mpi_phmlen, 1, MPI::DOUBLE, 0);
+ mpiWorld.getComm().Bcast (&mpi_rotinc, 1, MPI::DOUBLE, 0);
+ mpiWorld.getComm().Bcast (&nx, 1, MPI::INT, 0);
+ mpiWorld.getComm().Bcast (&ny, 1, MPI::INT, 0);
+ if (optVerbose)
+ timerBcast.timerEndAndReport ("Time to broadcast variables");
+
+ mpiWorld.setTotalWorkUnits (mpi_nview);
+
+ Projections projLocal (mpiWorld.getMyLocalWorkUnits(), mpi_ndet);
+ projLocal.setDetInc (mpi_detinc);
+ projLocal.setPhmLen (mpi_phmlen);
+ projLocal.setRotInc (mpi_rotinc);
+
+ TimerCollectiveMPI timerScatter (mpiWorld.getComm());
+ ScatterProjectionsMPI (mpiWorld, projGlobal, projLocal, optDebug);
+ if (optVerbose)
+ timerScatter.timerEndAndReport ("Time to scatter projections");
+
+ if (mpiWorld.getRank() == 0) {
+ imGlobal = new ImageFile (nx, ny);
+ }
+
+ imLocal = new ImageFile (nx, ny);
+#else
+ projGlobal.read (filenameProj);
+ if (optVerbose)
+ projGlobal.printScanInfo();
+
+ imGlobal = new ImageFile (nx, ny);
+#endif
+
+#ifdef HAVE_MPI
+ TimerCollectiveMPI timerReconstruct (mpiWorld.getComm());
+ projLocal.reconstruct (*imLocal, optFilterName.c_str(), optFilterParam, optInterpName.c_str(), optInterpParam, optBackprojName.c_str(), optTrace);
+ if (optVerbose)
+ timerReconstruct.timerEndAndReport ("Time to reconstruct");
+
+ TimerCollectiveMPI timerReduce (mpiWorld.getComm());
+ ReduceImageMPI (mpiWorld, imLocal, imGlobal);
+ if (optVerbose)
+ timerReduce.timerEndAndReport ("Time to reduce image");
+#else
+ projGlobal.reconstruct (*imGlobal, optFilterName.c_str(), optFilterParam, optInterpName.c_str(), optInterpParam, optBackprojName.c_str(), optTrace);
+#endif
+
+#ifdef HAVE_MPI
+ if (mpiWorld.getRank() == 0)
+#endif
+ {
+ double calcTime = timerProgram.timerEnd();
+ imGlobal->labelAdd (Array2dFileLabel::L_HISTORY, projGlobal.remark(), projGlobal.calcTime());
+ imGlobal->labelAdd (Array2dFileLabel::L_HISTORY, remark.c_str(), calcTime);
+ imGlobal->fileWrite (filenameImage);
+ if (optVerbose)
+ cout << "Run time: " << calcTime << " seconds" << endl;
+ }
+#ifdef HAVE_MPI
+ MPI::Finalize();
+#endif
+
+ return (0);
+}
+
+
+//////////////////////////////////////////////////////////////////////////////////////
+// MPI Support Routines
+//
+//////////////////////////////////////////////////////////////////////////////////////
+
+#ifdef HAVE_MPI
+static void ScatterProjectionsMPI (MPIWorld& mpiWorld, Projections& projGlobal, Projections& projLocal, const int optDebug)
+{
+ if (mpiWorld.getRank() == 0) {
+ for (int iProc = 0; iProc < mpiWorld.getNumProcessors(); iProc++) {
+ for (int iw = mpiWorld.getStartWorkUnit(iProc); iw <= mpiWorld.getEndWorkUnit(iProc); iw++) {
+ DetectorArray& detarray = projGlobal.getDetectorArray( iw );
+ int nDet = detarray.nDet();
+ DetectorValue* detval = detarray.detValues();
+
+ double viewAngle = detarray.viewAngle();
+ mpiWorld.getComm().Send(&nDet, 1, MPI::INT, iProc, 0);
+ mpiWorld.getComm().Send(&viewAngle, 1, MPI::DOUBLE, iProc, 0);
+ mpiWorld.getComm().Send(detval, nDet, MPI::FLOAT, iProc, 0);
+ }
+ }
+ }
+
+ for (int iw = 0; iw < mpiWorld.getMyLocalWorkUnits(); iw++) {
+ MPI::Status status;
+ int nDet;
+ double viewAngle;
+ DetectorValue* detval = projLocal.getDetectorArray(iw).detValues();
+
+ mpiWorld.getComm().Recv(&nDet, 1, MPI::INT, 0, 0, status);
+ mpiWorld.getComm().Recv(&viewAngle, 1, MPI::DOUBLE, 0, 0, status);
+ mpiWorld.getComm().Recv(detval, nDet, MPI::FLOAT, 0, 0, status);
+ projLocal.getDetectorArray(iw).setViewAngle( viewAngle );
+ }
+}
+
+static void
+ReduceImageMPI (MPIWorld& mpiWorld, ImageFile* imLocal, ImageFile* imGlobal)
+{
+ ImageFileArray vLocal = imLocal->getArray();
+
+ for (int ix = 0; ix < imLocal->nx(); ix++) {
+ void *recvbuf = NULL;
+ if (mpiWorld.getRank() == 0) {
+ ImageFileArray vGlobal = imGlobal->getArray();
+ recvbuf = vGlobal[ix];
+ }
+ mpiWorld.getComm().Reduce (vLocal[ix], recvbuf, imLocal->ny(), imLocal->getMPIDataType(), MPI::SUM, 0);
+ }
+}
+
+#endif
+
+
+#ifndef NO_MAIN
+int
+main (int argc, char* argv[])
+{
+ int retval = 1;
+
+ try {
+ retval = pjrec_main(argc, argv);
+ } catch (exception e) {
+ cerr << "Exception: " << e.what() << endl;
+ } catch (...) {
+ cerr << "Unknown exception" << endl;
+ }
+
+ return (retval);
+}
+#endif
+
projects / ctsim.git / blobdiff