** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: projections.cpp,v 1.5 2000/06/25 17:32:24 kevin Exp $
+** $Id: projections.cpp,v 1.15 2000/07/15 08:36:13 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
/* NAME
- * projections_write_header Write data header for projections file
+ * Projections::headerWwrite Write data header for projections file
*
*/
bool
Projections::headerWrite (fnetorderstream& fs)
{
- kuint32 _hsize = m_headerSize;
+ kuint16 _hsize = m_headerSize;
+ kuint16 _signature = m_signature;
kuint32 _nView = m_nView;
kuint32 _nDet = m_nDet;
kuint32 _geom = m_geometry;
- kuint32 _remarksize = m_remark.length();
+ kuint16 _remarksize = m_remark.length();
+ kuint16 _year = m_year;
+ kuint16 _month = m_month;
+ kuint16 _day = m_day;
+ kuint16 _hour = m_hour;
+ kuint16 _minute = m_minute;
+ kuint16 _second = m_second;
+
kfloat64 _calcTime = m_calcTime;
kfloat64 _rotStart = m_rotStart;
kfloat64 _rotInc = m_rotInc;
if (! fs)
return false;
- fs.writeInt32 (_hsize);
+ fs.writeInt16 (_hsize);
+ fs.writeInt16 (_signature);
fs.writeInt32 (_nView);
fs.writeInt32 (_nDet);
fs.writeInt32 (_geom);
fs.writeFloat64 (_detStart);
fs.writeFloat64 (_detInc);
fs.writeFloat64 (_phmLen);
- fs.writeInt32 (_remarksize);
+ fs.writeInt16 (_year);
+ fs.writeInt16 (_month);
+ fs.writeInt16 (_day);
+ fs.writeInt16 (_hour);
+ fs.writeInt16 (_minute);
+ fs.writeInt16 (_second);
+ fs.writeInt16 (_remarksize);
fs.write (m_remark.c_str(), _remarksize);
m_headerSize = fs.tellp();
_hsize = m_headerSize;
fs.seekp(0);
- fs.writeInt32 (_hsize);
+ fs.writeInt16 (_hsize);
if (! fs)
return false;
bool
Projections::headerRead (fnetorderstream& fs)
{
- kuint32 _hsize;
- kuint32 _nView;
- kuint32 _nDet;
- kuint32 _geom;
- kuint32 _remarksize = 0;
- kfloat64 _calcTime;
- kfloat64 _rotStart;
- kfloat64 _rotInc;
- kfloat64 _detStart;
- kfloat64 _detInc;
- kfloat64 _phmLen;
+ kuint16 _hsize, _signature, _year, _month, _day, _hour, _minute, _second, _remarksize = 0;
+ kuint32 _nView, _nDet, _geom;
+ kfloat64 _calcTime, _rotStart, _rotInc, _detStart, _detInc, _phmLen;
fs.seekg(0);
if (! fs)
return false;
- off_t testPos;
- fs.readInt32 (_hsize);
+ fs.readInt16 (_hsize);
+ fs.readInt16 (_signature);
fs.readInt32 (_nView);
fs.readInt32 (_nDet);
fs.readInt32 (_geom);
fs.readFloat64 (_detStart);
fs.readFloat64 (_detInc);
fs.readFloat64 (_phmLen);
- fs.readInt32 (_remarksize);
- if (_remarksize > 100000) {
- sys_error (ERR_SEVERE, "Insane _remarksize %d [projections::headerRead]", _remarksize);
- return false;
- }
+ fs.readInt16 (_year);
+ fs.readInt16 (_month);
+ fs.readInt16 (_day);
+ fs.readInt16 (_hour);
+ fs.readInt16 (_minute);
+ fs.readInt16 (_second);
+ fs.readInt16 (_remarksize);
if (! fs) {
sys_error (ERR_SEVERE, "Error reading header information , _remarksize=%d [projections_read_header]", _remarksize);
return false;
}
+ if (_signature != m_signature) {
+ sys_error (ERR_SEVERE, "File %s does not have a valid projection file signature", m_filename.c_str());
+ return false;
+ }
+
char remarkStorage[_remarksize+1];
fs.read (remarkStorage, _remarksize);
if (! fs) {
m_detStart = _detStart;
m_detInc = _detInc;
m_phmLen = _phmLen;
+ m_year = _year;
+ m_month = _month;
+ m_day = _day;
+ m_hour = _hour;
+ m_minute = _minute;
+ m_second = _second;
+
+ m_label.setLabelType (Array2dFileLabel::L_HISTORY);
+ m_label.setLabelString (m_remark);
+ m_label.setCalcTime (m_calcTime);
+ m_label.setDateTime (m_year, m_month, m_day, m_hour, m_minute, m_second);
return true;
}
Projections::read (const char* filename)
{
frnetorderstream fileRead (filename, ios::in | ios::binary);
+ m_filename = filename;
if (! fileRead)
return false;
Projections::write (const char* filename)
{
frnetorderstream fs (filename, ios::out | ios::binary | ios::trunc | ios::ate);
-
+ m_filename = filename;
if (! fs) {
sys_error (ERR_SEVERE, "Error opening file %s for output [projections_create]", filename);
return false;
}
+
+ time_t t = time(NULL);
+ tm* lt = localtime(&t);
+ m_year = lt->tm_year;
+ m_month = lt->tm_mon;
+ m_day = lt->tm_mday;
+ m_hour = lt->tm_hour;
+ m_minute = lt->tm_min;
+ m_second = lt->tm_sec;
+
if (! headerWrite (fs))
return false;
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;
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);
}
*/
bool
-Projections::reconstruct (ImageFile& im, const char* const filterName, double filt_param, 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* 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;
+ SignalFilter filter (filterName, filterMethodName, filterBW, m_detInc, m_nDet, filt_param, "spatial", zeropad, interpFactor);
+ filter.setTraceLevel(trace);
- 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());
return false;
#if HAVE_SGP
SGP_ID gid;
- double plot_xaxis [n_vec_filter]; // array for plotting
+ int nVecFilter = filter.getNFilterPoints();
+ double plot_xaxis [nVecFilter]; // array for plotting
- if (trace > TRACE_TEXT) {
+ if (trace > TRACE_TEXT && nVecFilter > 0) {
int i;
double f;
- double filterInc = (filterMax - filterMin) / (n_vec_filter - 1);
- for (i = 0, f = filterMin; i < n_vec_filter; i++, f += filterInc)
+ double filterInc = filter.getFilterIncrement();
+ for (i = 0, f = filter.getFilterMin(); i < nVecFilter; i++, f += filterInc)
plot_xaxis[i] = f;
-
- gid = ezplot (plot_xaxis, filter.getFilter(), n_vec_filter);
- cio_put_str ("Press any key to continue");
- cio_kb_getc ();
- sgp2_close (gid);
+
+ if (filter.getFilter()) {
+ gid = ezplot (plot_xaxis, filter.getFilter(), nVecFilter);
+ cio_put_str ("Press any key to continue");
+ cio_kb_getc ();
+ sgp2_close (gid);
+ }
}
if (trace >= TRACE_TEXT) {
- printf ("nview=%d, ndet=%d, det_start=%.4f, det_inc=%.4f\n", m_nView, m_nDet, m_detStart, m_detInc);
+ 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;
if (trace >= TRACE_TEXT)
printf ("Reconstructing view %d (last = %d)\n", iview, m_nView - 1);
- DetectorArray& darray = getDetectorArray (iview);
- DetectorValue* detval = darray.detValues();
+ const DetectorArray& darray = getDetectorArray (iview);
+ const DetectorValue* detval = darray.detValues();
- for (int j = 0; j < m_nDet; j++)
- filtered_proj[j] = filter.convolve (detval, det_inc, j, m_nDet);
+ filter.filterSignal (detval, filteredProj);
#ifdef HAVE_SGP
if (trace >= TRACE_PLOT) {
ezset ("xporigin .5.");
ezset ("xlength .5.");
ezset ("box");
+
ezset ("grid");
- gid = ezplot (filtered_proj, plot_xaxis, m_nDet);
+ gid = ezplot (filteredProj, plot_xaxis, n_filteredProj);
}
#endif //HAVE_SGP
#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);
+ 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) {