X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fprojections.cpp;h=fb24e0d897bf065d9d348a5b09f827eacf1b8b8d;hp=df7ccd2b03b380372eea0124e471aa8711066cd0;hb=bfcc769cf8019eabc8c65c07257c8dbee4b4c977;hpb=1e88cf0f7fa4f690ea9f110e8ed3f2b5338d0a10 diff --git a/libctsim/projections.cpp b/libctsim/projections.cpp index df7ccd2..fb24e0d 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 1.22 2000/08/25 15:59:13 kevin Exp $ +** $Id: projections.cpp,v 1.25 2000/09/02 05:10:39 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 @@ -66,6 +66,7 @@ Projections::~Projections (void) void Projections::init (const int nView, const int nDet) { + m_label.setLabelType (Array2dFileLabel::L_HISTORY); m_nView = nView; m_nDet = nDet; newProjData (); @@ -74,14 +75,24 @@ Projections::init (const int nView, const int nDet) void Projections::initFromScanner (const Scanner& scanner) { + m_label.setLabelType (Array2dFileLabel::L_HISTORY); deleteProjData(); init (scanner.nView(), scanner.nDet()); 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.detLen() / 2) + (scanner.detInc() / 2); + 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 @@ -157,7 +168,9 @@ 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; @@ -173,6 +186,8 @@ 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); @@ -201,7 +216,7 @@ 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) @@ -218,6 +233,8 @@ 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); @@ -261,6 +278,8 @@ 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; @@ -276,6 +295,13 @@ Projections::headerRead (fnetorderstream& fs) return true; } +bool +Projections::read (const string& filename) +{ + return read (filename.c_str()); +} + + bool Projections::read (const char* filename) { @@ -301,6 +327,12 @@ Projections::read (const char* filename) } +bool +Projections::write (const string& filename) +{ + return write (filename.c_str()); +} + bool Projections::write (const char* filename) { @@ -422,24 +454,25 @@ Projections::detarrayWrite (fnetorderstream& fs, const DetectorArray& darray, co } /* NAME - * prt_projections Print projections data + * printProjectionData Print projections data * * SYNOPSIS - * prt_projections (proj) - * Projections& proj Projection data to be printed + * printProjectionData () */ 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]); @@ -449,163 +482,20 @@ 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"; } -/* NAME - * Projections::reconstruct Reconstruct Image from Projections - * - * SYNOPSIS - * im = proj.reconstruct (im, filt_type, filt_param, interp_type) - * IMAGE *im Output image - * int filt_type Type of convolution filter to use - * double filt_param Filter specific parameter - * Currently, used only with Hamming filters - * int interp_type Type of interpolation method to use - * - * ALGORITHM - * - * Calculate one-dimensional filter in spatial domain - * Allocate & clear (zero) the 2d output image array - * For each projection view - * Convolve raysum array with filter - * Backproject raysums and add (summate) to image array - * end - */ - -bool -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 -{ - 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 = interpFactor; - spline_order = 3; - zoom_factor = 3; - n_filteredProj = (m_nDet - 1) * (zoom_factor + 1) + 1; - } -#endif - - double filterBW = 1. / detInc; - ProcessSignal processSignal (filterName, filterMethodName, filterBW, m_detInc, m_nDet, filt_param, "spatial", filterGenerationName, zeropad, interpFactor, trace); - - if (processSignal.fail()) { - sys_error (ERR_SEVERE, "%s [Projections::reconstruct]", processSignal.failMessage().c_str()); - return false; - } - - if (trace) - cout << "Reconstruct: filter="<= TRACE_TEXT) { - 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, 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); - - const DetectorArray& darray = getDetectorArray (iview); - const DetectorValue* detval = darray.detValues(); - - processSignal.filterSignal (detval, filteredProj); - -#ifdef HAVE_BSPLINE_INTERP - if (interp_type == I_BSPLINE) - 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, filteredProj, filteredProj); - ezplot_1d (filteredProj, n_filteredProj); - } -#endif -#endif - - bj.BackprojectView (filteredProj, darray.viewAngle()); - -#ifdef HAVE_SGP - if (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]; - fgets(str, sizeof(str), stdin); - if (tolower(str[0]) == 'y') { - break; - } - } -#endif //HAVE_SGP - } - - return true; -} -