X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fprojections.cpp;h=be8e82941f9a47b30fe1946905fa9fba96bc7f0c;hp=3a071b478bceb2f25761068260791512d3f32ca7;hb=a05f3cb550877e94aa118cc04b361c0c8fdb3dc3;hpb=931ea35fdc3a7e463602644e6938730556bf92a7 diff --git a/libctsim/projections.cpp b/libctsim/projections.cpp index 3a071b4..be8e829 100644 --- a/libctsim/projections.cpp +++ b/libctsim/projections.cpp @@ -8,7 +8,7 @@ ** This is part of the CTSim program ** Copyright (C) 1983-2000 Kevin Rosenberg ** -** $Id: projections.cpp,v 1.7 2000/06/29 12:39:46 kevin Exp $ +** $Id: projections.cpp,v 1.24 2000/08/31 08:38:58 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 @@ -80,9 +80,17 @@ Projections::initFromScanner (const Scanner& scanner) m_phmLen = scanner.phmLen(); m_rotInc = scanner.rotInc(); m_detInc = scanner.detInc(); + m_geometry = scanner.geometry(); + m_focalLength = scanner.focalLength(); + m_fieldOfView = scanner.fieldOfView(); m_rotStart = 0; - m_detStart = -scanner.radius() + (scanner.detInc() / 2); - m_phmLen = scanner.phmLen(); + m_detStart = -(scanner.detLen() / 2); +#if 0 + if (m_geometry == Scanner::GEOMETRY_EQUILINEAR) { + m_detInc /= 2; + cout << "Kludge: detInc /= 2 in Projections::initFromScanner" << endl; + } +#endif } void @@ -158,7 +166,9 @@ Projections::headerWrite (fnetorderstream& fs) kfloat64 _detStart = m_detStart; kfloat64 _detInc = m_detInc; kfloat64 _phmLen = m_phmLen; - + kfloat64 _fieldOfView = m_fieldOfView; + kfloat64 _focalLength = m_focalLength; + fs.seekp(0); if (! fs) return false; @@ -174,6 +184,8 @@ Projections::headerWrite (fnetorderstream& fs) fs.writeFloat64 (_detStart); fs.writeFloat64 (_detInc); fs.writeFloat64 (_phmLen); + fs.writeFloat64 (_focalLength); + fs.writeFloat64 (_fieldOfView); fs.writeInt16 (_year); fs.writeInt16 (_month); fs.writeInt16 (_day); @@ -202,13 +214,12 @@ Projections::headerRead (fnetorderstream& fs) { kuint16 _hsize, _signature, _year, _month, _day, _hour, _minute, _second, _remarksize = 0; kuint32 _nView, _nDet, _geom; - kfloat64 _calcTime, _rotStart, _rotInc, _detStart, _detInc, _phmLen; + kfloat64 _calcTime, _rotStart, _rotInc, _detStart, _detInc, _phmLen, _focalLength, _fieldOfView; fs.seekg(0); if (! fs) return false; - off_t testPos; fs.readInt16 (_hsize); fs.readInt16 (_signature); fs.readInt32 (_nView); @@ -220,6 +231,8 @@ Projections::headerRead (fnetorderstream& fs) fs.readFloat64 (_detStart); fs.readFloat64 (_detInc); fs.readFloat64 (_phmLen); + fs.readFloat64 (_focalLength); + fs.readFloat64 (_fieldOfView); fs.readInt16 (_year); fs.readInt16 (_month); fs.readInt16 (_day); @@ -263,6 +276,8 @@ Projections::headerRead (fnetorderstream& fs) m_detStart = _detStart; m_detInc = _detInc; m_phmLen = _phmLen; + m_focalLength = _focalLength; + m_fieldOfView = _fieldOfView; m_year = _year; m_month = _month; m_day = _day; @@ -278,6 +293,13 @@ Projections::headerRead (fnetorderstream& fs) return true; } +bool +Projections::read (const string& filename) +{ + return read (filename.c_str()); +} + + bool Projections::read (const char* filename) { @@ -303,6 +325,12 @@ Projections::read (const char* filename) } +bool +Projections::write (const string& filename) +{ + return write (filename.c_str()); +} + bool Projections::write (const char* filename) { @@ -366,7 +394,7 @@ Projections::detarrayRead (fnetorderstream& fs, DetectorArray& darray, const int darray.setViewAngle (view_angle); // darray.setNDet ( nDet); - for (int i = 0; i < nDet; i++) { + for (unsigned int i = 0; i < nDet; i++) { kfloat32 detval; fs.readFloat32 (detval); detval_ptr[i] = detval; @@ -412,7 +440,7 @@ Projections::detarrayWrite (fnetorderstream& fs, const DetectorArray& darray, co fs.writeFloat64 (view_angle); fs.writeInt32 (nDet); - for (int i = 0; i < nDet; i++) { + for (unsigned int i = 0; i < nDet; i++) { kfloat32 detval = detval_ptr[i]; fs.writeFloat32 (detval); } @@ -434,14 +462,16 @@ Projections::detarrayWrite (fnetorderstream& fs, const DetectorArray& darray, co void Projections::printProjectionData (void) { - printf("Projections Print\n\n"); + printf("Projections Data\n\n"); printf("Description: %s\n", m_remark.c_str()); - printf("nView = %d nDet = %d\n", m_nView, m_nDet); - printf("rotStart = %8.4f rotInc = %8.4f\n", m_rotStart, m_rotInc); - printf("detStart = %8.4f detInc = %8.4f\n", m_detStart, m_detInc); - + printf("Geometry: %s\n", Scanner::convertGeometryIDToName (m_geometry)); + printf("nView = %8d nDet = %8d\n", m_nView, m_nDet); + printf("focalLength = %8.4f fieldOfView = %8.4f\n", m_focalLength, m_fieldOfView); + printf("rotStart = %8.4f rotInc = %8.4f\n", m_rotStart, m_rotInc); + printf("detStart = %8.4f detInc = %8.4f\n", m_detStart, m_detInc); if (m_projData != NULL) { for (int ir = 0; ir < m_nView; ir++) { + printf("View %d: angle %f\n", ir, m_projData[ir]->viewAngle()); DetectorValue* detval = m_projData[ir]->detValues(); for (int id = 0; id < m_projData[ir]->nDet(); id++) printf("%8.4f ", detval[id]); @@ -451,16 +481,19 @@ Projections::printProjectionData (void) } void -Projections::printScanInfo (void) const +Projections::printScanInfo (ostringstream& os) const { - printf ("Number of detectors: %d\n", m_nDet); - printf (" Number of views: %d\n", m_nView); - printf (" Remark: %s\n", m_remark.c_str()); - printf (" phmLen: %f\n", m_phmLen); - printf (" detStart: %f\n", m_detStart); - printf (" detInc: %f\n", m_detInc); - printf (" rotStart: %f\n", m_rotStart); - printf (" rotInc: %f\n", m_rotInc); + os << "Number of detectors: " << m_nDet << "\n"; + os << " Number of views: " << m_nView<< "\n"; + os << " Remark: " << m_remark.c_str()<< "\n"; + os << " Geometry: " << Scanner::convertGeometryIDToName (m_geometry)<< "\n"; + os << " Focal Length: " << m_focalLength<< "\n"; + os << " Field Of View: " << m_fieldOfView<< "\n"; + os << " phmLen: " << m_phmLen<< "\n"; + os << " detStart: " << m_detStart<< "\n"; + os << " detInc: " << m_detInc<< "\n"; + os << " rotStart: " << m_rotStart<< "\n"; + os << " rotInc: " << m_rotInc<< "\n"; } @@ -487,32 +520,27 @@ Projections::printScanInfo (void) const */ bool -Projections::reconstruct (ImageFile& im, const char* const filterName, double filt_param, const char* const filterMethodName, const char* const interpName, int interp_param, const char* const backprojectName, const int trace) +Projections::reconstruct (ImageFile& im, const char* const filterName, double filt_param, const char* const filterMethodName, const int zeropad, const char* filterGenerationName, const char* const interpName, int interpFactor, const char* const backprojectName, const int trace) const { - int nview = m_nView; - double det_inc = m_detInc; - double detlen = (m_nDet - 1) * det_inc; - int n_filtered_proj = m_nDet; - double filtered_proj [n_filtered_proj]; // convolved result + double detInc = m_detInc; + int n_filteredProj = m_nDet * interpFactor; + double filteredProj [n_filteredProj]; // filtered projections #ifdef HAVE_BSPLINE_INTERP int spline_order = 0, zoom_factor = 0; if (interp_type == I_BSPLINE) { - zoom_factor = interp_param; + zoom_factor = interpFactor; spline_order = 3; zoom_factor = 3; - n_filtered_proj = (m_nDet - 1) * (zoom_factor + 1) + 1; + n_filteredProj = (m_nDet - 1) * (zoom_factor + 1) + 1; } #endif - int n_vec_filter = 2 * m_nDet - 1; - double filterBW = 1. / det_inc; - double filterMin = -detlen; - double filterMax = detlen; + double filterBW = 1. / detInc; + ProcessSignal processSignal (filterName, filterMethodName, filterBW, m_detInc, m_nDet, filt_param, "spatial", filterGenerationName, zeropad, interpFactor, trace, m_geometry, m_focalLength); - SignalFilter filter (filterName, filterBW, filterMin, filterMax, n_vec_filter, filt_param, "spatial", 0); - if (filter.fail()) { - sys_error (ERR_SEVERE, "%s [Projections::reconstruct]", filter.failMessage().c_str()); + if (processSignal.fail()) { + sys_error (ERR_SEVERE, "%s [Projections::reconstruct]", processSignal.failMessage().c_str()); return false; } @@ -520,86 +548,92 @@ Projections::reconstruct (ImageFile& im, const char* const filterName, double fi cout << "Reconstruct: filter="<= TRACE_TEXT) { - printf ("nview=%d, ndet=%d, det_start=%.4f, det_inc=%.4f\n", m_nView, m_nDet, m_detStart, m_detInc); + if (trace >= Trace::TRACE_CONSOLE) { + printf ("nview=%d, ndet=%d, det_start=%.4f, detInc=%.4f\n", m_nView, m_nDet, m_detStart, m_detInc); } #endif //HAVE_SGP - Backprojector bj (*this, im, backprojectName, interpName); + Backprojector bj (*this, im, backprojectName, interpName, interpFactor); if (bj.fail()) { sys_error (ERR_SEVERE, "%s [Projections::reconstruct]", bj.failMessage().c_str()); return false; } for (int iview = 0; iview < m_nView; iview++) { - if (trace >= TRACE_TEXT) - printf ("Reconstructing view %d (last = %d)\n", iview, m_nView - 1); + if (trace >= Trace::TRACE_CONSOLE) + cout <<"Reconstructing view " << iview << "(last = " << m_nView - 1 << ")\n"; - DetectorArray& darray = getDetectorArray (iview); - DetectorValue* detval = darray.detValues(); - - for (int j = 0; j < m_nDet; j++) - filtered_proj[j] = filter.convolve (detval, det_inc, j, m_nDet); + const DetectorArray& darray = getDetectorArray (iview); + const DetectorValue* detval = darray.detValues(); -#ifdef HAVE_SGP - if (trace >= TRACE_PLOT) { - ezset ("clear."); - ezset ("xticks major 5."); - ezset ("xlabel "); - ezset ("ylabel "); - ezset ("xlength .5."); - ezset ("box."); - ezset ("grid."); - ezset ("ufinish yes."); - ezplot (detval, plot_xaxis, m_nDet); - ezset ("clear."); - ezset ("xticks major 5."); - ezset ("xlabel "); - ezset ("ylabel "); - ezset ("ustart yes."); - ezset ("xporigin .5."); - ezset ("xlength .5."); - ezset ("box"); - ezset ("grid"); - gid = ezplot (filtered_proj, plot_xaxis, m_nDet); - } -#endif //HAVE_SGP + processSignal.filterSignal (detval, filteredProj); #ifdef HAVE_BSPLINE_INTERP if (interp_type == I_BSPLINE) - bspline (m_nDet, zoom_factor, spline_order, filtered_proj, filtered_proj); + bspline (m_nDet, zoom_factor, spline_order, filteredProj, filteredProj); #ifdef HAVE_SGP - if (trace >= TRACE_PLOT && interp_type == I_BSPLINE) { - bspline (m_nDet, zoom_factor, spline_order, filtered_proj, filtered_proj); - ezplot_1d (filtered_proj, n_filtered_proj); + if (trace >= Trace::TRACE_PLOT && interp_type == I_BSPLINE) { + bspline (m_nDet, zoom_factor, spline_order, filteredProj, filteredProj); + ezplot_1d (filteredProj, n_filteredProj); } #endif #endif - bj.BackprojectView (filtered_proj, darray.viewAngle()); + bj.BackprojectView (filteredProj, darray.viewAngle()); #ifdef HAVE_SGP - if (trace >= TRACE_PLOT) { + if (trace >= Trace::TRACE_PLOT) { + SGPDriver sgpDriverProj ("Projection"); + SGP sgpProj (sgpDriverProj); + EZPlot ezplotProj (sgpProj); + + ezplotProj.ezset ("clear"); + ezplotProj.ezset ("title Filtered Projection"); + ezplotProj.ezset ("xticks major 5."); + ezplotProj.ezset ("xlabel "); + ezplotProj.ezset ("ylabel "); + ezplotProj.ezset ("yporigin .5."); + ezplotProj.ezset ("ylength .5."); + ezplotProj.ezset ("box."); + ezplotProj.ezset ("grid."); + ezplotProj.addCurve (plot_xaxis, detval, m_nDet); + ezplotProj.plot(); + ezplotProj.ezset ("clear"); + ezplotProj.ezset ("xticks major 5."); + ezplotProj.ezset ("xlabel "); + ezplotProj.ezset ("ylabel "); + ezplotProj.ezset ("ylength .5."); + ezplotProj.ezset ("box"); + ezplotProj.ezset ("grid"); + ezplotProj.addCurve (plot_xaxis, filteredProj, n_filteredProj); + ezplotProj.plot(); + + cout << "Do you want to exit with current pic (y/n)? " << flush; char str[256]; - printf ("Do you want to exit with current pic (y/n) -- "); fgets(str, sizeof(str), stdin); - sgp2_close (sgp2_get_active_win()); if (tolower(str[0]) == 'y') { break; }