** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: projections.cpp,v 1.4 2000/06/22 10:17:28 kevin Exp $
+** $Id: projections.cpp,v 1.29 2000/12/16 02:31:00 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
******************************************************************************/
#include "ct.h"
-
+\r
+const kuint16 Projections::m_signature = ('P'*256 + 'J');\r
/* NAME
* Projections Constructor for projections matrix storage
void
Projections::init (const int nView, const int nDet)
{
+ m_label.setLabelType (Array2dFileLabel::L_HISTORY);
m_nView = nView;
m_nDet = nDet;
newProjData ();
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.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
/* 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;
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;
- 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.writeFloat64 (_focalLength);
+ fs.writeFloat64 (_fieldOfView);
+ 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, _focalLength, _fieldOfView;
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.readFloat64 (_focalLength);
+ fs.readFloat64 (_fieldOfView);
+ 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;
}
- char remarkStorage[_remarksize+1];
- fs.read (remarkStorage, _remarksize);
+ 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* pszRemarkStorage = new char [_remarksize+1];
+ fs.read (pszRemarkStorage, _remarksize);
if (! fs) {
sys_error (ERR_SEVERE, "Error reading remark, _remarksize = %d", _remarksize);
return false;
}
- remarkStorage[_remarksize] = 0;
- m_remark = remarkStorage;
+ pszRemarkStorage[_remarksize] = 0;
+ m_remark = pszRemarkStorage;
+ delete pszRemarkStorage;\r
off_t _hsizeread = fs.tellg();
if (!fs || _hsizeread != _hsize) {
m_detStart = _detStart;
m_detInc = _detInc;
m_phmLen = _phmLen;
+ m_focalLength = _focalLength;
+ m_fieldOfView = _fieldOfView;
+ 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;
}
+bool
+Projections::read (const string& filename)
+{
+ return read (filename.c_str());
+}
+
+
bool
Projections::read (const char* filename)
{
frnetorderstream fileRead (filename, ios::in | ios::binary);
+ m_filename = filename;
if (! fileRead)
return false;
}
+bool
+Projections::copyViewData (const string& filename, ostream& os, int startView, int endView)
+{
+ return copyViewData (filename.c_str(), os, startView, endView);
+}
+
+bool
+Projections::copyViewData (const char* const filename, ostream& os, int startView, int endView)
+{
+ frnetorderstream is (filename, ios::in | ios::binary);
+ kuint16 sizeHeader, signature;
+ kuint32 _nView, _nDet;
+
+ is.readInt16 (sizeHeader);
+ is.readInt16 (signature);
+ is.readInt32 (_nView);
+ is.readInt32 (_nDet);
+ int nView = _nView;
+ int nDet = _nDet;
+
+ if (signature != m_signature) {
+ sys_error (ERR_FATAL, "Illegal signature in projection file %s", filename);
+ return false;
+ }
+
+ if (startView < 0)
+ startView = 0;
+ if (startView > nView - 1)
+ startView = nView;
+ if (endView < 0 || endView > nView - 1)
+ endView = nView - 1;
+
+ if (startView > endView) { // swap if start > end
+ int tempView = endView;
+ endView = startView;
+ startView = tempView;
+ }
+
+ int sizeView = 8 /* view_angle */ + 4 /* nDet */ + (4 * nDet);
+ unsigned char* pViewData = new unsigned char [sizeView];
+
+ for (int i = startView; i <= endView; i++) {
+ is.seekg (sizeHeader + i * sizeView);
+ is.read (pViewData, sizeView);
+ os.write (pViewData, sizeView);
+ if (is.fail() || os.fail())
+ break;
+ }
+
+ delete pViewData;
+ if (is.fail())
+ sys_error (ERR_FATAL, "Error reading projection file");
+ if (os.fail())
+ sys_error (ERR_FATAL, "Error writing projection file");
+
+ return (! (is.fail() | os.fail()));
+}
+
+bool
+Projections::copyHeader (const string& filename, ostream& os)
+{
+ return copyHeader (filename.c_str(), os);
+}
+
+bool
+Projections::copyHeader (const char* const filename, ostream& os)
+{
+ frnetorderstream is (filename, ios::in | ios::binary);
+ kuint16 sizeHeader, signature;
+ is.readInt16 (sizeHeader);
+ is.readInt16 (signature);
+ is.seekg (0);
+ if (signature != m_signature) {
+ sys_error (ERR_FATAL, "Illegal signature in projection file %s", filename);
+ return false;
+ }
+
+ unsigned char* pHdrData = new unsigned char [sizeHeader];
+ is.read (pHdrData, sizeHeader);
+ if (is.fail()) {
+ sys_error (ERR_FATAL, "Error reading header");
+ return false;
+ }
+
+ os.write (pHdrData, sizeHeader);
+ if (os.fail()) {
+ sys_error (ERR_FATAL, "Error writing header");
+ return false;
+ }
+
+ return true;
+}
+
+bool
+Projections::write (const string& filename)
+{
+ return write (filename.c_str());
+}
+
bool
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;
}
+
+#ifdef HAVE_TIME
+ 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;
+#endif
+
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);
}
}
/* 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)
+Projections::printProjectionData ()
{
- printf("Projections Print\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);
+ printProjectionData (0, nView() - 1);
+}
+void
+Projections::printProjectionData (int startView, int endView)
+{
+ printf("Projections Data\n\n");
+ printf("Description: %s\n", m_remark.c_str());
+ 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++) {
- DetectorValue* detval = m_projData[ir]->detValues();
- for (int id = 0; id < m_projData[ir]->nDet(); id++)
- printf("%8.4f ", detval[id]);
- printf("\n");
- }
+ if (startView < 0)
+ startView = 0;
+ if (startView > m_nView - 1)
+ startView = m_nView - 1;
+ if (endView > m_nView - 1)
+ endView = m_nView - 1;
+ for (int ir = startView; ir <= endView - 1; 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]);
+ printf("\n");
+ }
}
}
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 interpName, int interp_param, const char* const backprojectName, const int trace)
-{
- 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
-
-#ifdef HAVE_BSPLINE_INTERP
- int spline_order = 0, zoom_factor = 0;
- if (interp_type == I_BSPLINE) {
- zoom_factor = interp_param;
- spline_order = 3;
- zoom_factor = 3;
- n_filtered_proj = (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;
-
- SignalFilter filter (filterName, filterBW, filterMin, filterMax, n_vec_filter, filt_param, "spatial", 0);
- if (filter.fail())
- return false;
-
- if (trace)
- cout << "Reconstruct: filter="<<filterName<< ", interp="<<interpName<<", backproject="<<backprojectName<<endl;
-
-#if HAVE_SGP
- SGP_ID gid;
- double plot_xaxis [n_vec_filter]; // array for plotting
-
- if (trace > TRACE_TEXT) {
- int i;
- double f;
- double filterInc = (filterMax - filterMin) / (n_vec_filter - 1);
- for (i = 0, f = filterMin; i < n_vec_filter; 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 (trace >= TRACE_TEXT) {
- printf ("nview=%d, ndet=%d, det_start=%.4f, det_inc=%.4f\n", m_nView, m_nDet, m_detStart, m_detInc);
- }
-#endif //HAVE_SGP
-
- Backprojector bj (*this, im, backprojectName, interpName);
- if (bj.fail())
- 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);
-
- 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);
-
-#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
-
-#ifdef HAVE_BSPLINE_INTERP
- if (interp_type == I_BSPLINE)
- bspline (m_nDet, zoom_factor, spline_order, filtered_proj, filtered_proj);
-
-#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);
- }
-#endif
-#endif
-
- bj.BackprojectView (filtered_proj, darray.viewAngle());
-
-#ifdef HAVE_SGP
- if (trace >= TRACE_PLOT) {
- 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;
- }
- }
-#endif //HAVE_SGP
- }
-
- return true;
-}
-
projects / ctsim.git / blobdiff