** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: procsignal.cpp,v 1.19 2001/01/12 16:41:56 kevin Exp $
+** $Id: procsignal.cpp,v 1.20 2001/01/12 21:53:27 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
// ProcessSignal
//
ProcessSignal::ProcessSignal (const char* szFilterName, const char* szFilterMethodName, double dBandwidth,
- double dSignalIncrement, int nSignalPoints, double dFilterParam, const char* szDomainName,
- const char* szFilterGenerationName, int iZeropad, int iPreinterpolationFactor, int iTraceLevel,
- int iGeometry, double dFocalLength, SGP* pSGP)
-: m_adFourierCosTable(NULL), m_adFourierSinTable(NULL), m_adFilter(NULL), m_fail(false)
+ double dSignalIncrement, int nSignalPoints, double dFilterParam, const char* szDomainName,
+ const char* szFilterGenerationName, int iZeropad, int iPreinterpolationFactor, int iTraceLevel,
+ int iGeometry, double dFocalLength, SGP* pSGP)
+ : m_adFourierCosTable(NULL), m_adFourierSinTable(NULL), m_adFilter(NULL), m_fail(false)
{
m_idFilterMethod = convertFilterMethodNameToID (szFilterMethodName);
if (m_idFilterMethod == FILTER_METHOD_INVALID) {
}
init (m_idFilter, m_idFilterMethod, dBandwidth, dSignalIncrement, nSignalPoints, dFilterParam, m_idDomain,
- m_idFilterGeneration, iZeropad, iPreinterpolationFactor, iTraceLevel, iGeometry, dFocalLength, pSGP);
+ m_idFilterGeneration, iZeropad, iPreinterpolationFactor, iTraceLevel, iGeometry, dFocalLength, pSGP);
}
void
ProcessSignal::init (const int idFilter, const int idFilterMethod, double dBandwidth, double dSignalIncrement,
- int nSignalPoints, double dFilterParam, const int idDomain, const int idFilterGeneration,
- const int iZeropad, const int iPreinterpolationFactor, int iTraceLevel, int iGeometry,
- double dFocalLength, SGP* pSGP)
+ int nSignalPoints, double dFilterParam, const int idDomain, const int idFilterGeneration,
+ const int iZeropad, const int iPreinterpolationFactor, int iTraceLevel, int iGeometry,
+ double dFocalLength, SGP* pSGP)
{
int i;
m_idFilter = idFilter;
m_adFilter = new double[ m_nFilterPoints ];
double* adFrequencyFilter = new double [m_nFilterPoints];
filter.copyFilterData (adFrequencyFilter, 0, m_nFilterPoints);
-#ifdef HAVE_SGP
- EZPlot* pEZPlot = NULL;
- if (pSGP && m_traceLevel >= Trace::TRACE_PLOT) {
- pEZPlot = new EZPlot ();
- pEZPlot->ezset ("title Filter Response: Natural Order");
- pEZPlot->ezset ("ylength 0.25");
- pEZPlot->addCurve (adFrequencyFilter, m_nFilterPoints);
- pEZPlot->plot (pSGP);
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ EZPlotDialog* pEZPlotDlg = NULL;
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Filter Response: Natural Order");
+ dlgEZPlot.getEZPlot()->addCurve (adFrequencyFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
}
#endif
Fourier::shuffleNaturalToFourierOrder (adFrequencyFilter, m_nFilterPoints);
#ifdef HAVE_SGP
- if (pEZPlot && m_traceLevel >= Trace::TRACE_PLOT) {
- pEZPlot->ezset ("title Filter Response: Fourier Order");
- pEZPlot->ezset ("ylength 0.25");
- pEZPlot->ezset ("yporigin 0.25");
- pEZPlot->addCurve (adFrequencyFilter, m_nFilterPoints);
- pEZPlot->plot (pSGP);
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Filter Response: Fourier Order");
+ dlgEZPlot.getEZPlot()->addCurve (adFrequencyFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
}
#endif
ProcessSignal::finiteFourierTransform (adFrequencyFilter, m_adFilter, m_nFilterPoints, FORWARD);
delete adFrequencyFilter;
-#ifdef HAVE_SGP
- if (pEZPlot && m_traceLevel >= Trace::TRACE_PLOT) {
- pEZPlot->ezset ("title Inverse Fourier Frequency: Fourier Order");
- pEZPlot->ezset ("ylength 0.25");
- pEZPlot->ezset ("yporigin 0.50");
- pEZPlot->addCurve (m_adFilter, m_nFilterPoints);
- pEZPlot->plot (pSGP);
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Inverse Fourier Frequency: Fourier Order");
+ dlgEZPlot.getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
}
#endif
Fourier::shuffleFourierToNaturalOrder (m_adFilter, m_nFilterPoints);
-#ifdef HAVE_SGP
- if (pEZPlot && m_traceLevel >= Trace::TRACE_PLOT) {
- pEZPlot->ezset ("title Inverse Fourier Frequency: Natural Order");
- pEZPlot->ezset ("ylength 0.25");
- pEZPlot->ezset ("yporigin 0.75");
- pEZPlot->addCurve (m_adFilter, m_nFilterPoints);
- pEZPlot->plot (pSGP);
- delete pEZPlot;
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Inverse Fourier Frequency: Natural Order");
+ dlgEZPlot.getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
}
#endif
for (i = 0; i < m_nFilterPoints; i++) {
} else if (m_idGeometry == Scanner::GEOMETRY_EQUIANGULAR) {
for (i = 0; i < m_nFilterPoints; i++) {
int iDetFromZero = i - ((m_nFilterPoints - 1) / 2);
- double sinScale = sin (iDetFromZero * m_dSignalInc);
- if (fabs(sinScale) < 1E-7)
- sinScale = 1;
- else
- sinScale = (iDetFromZero * m_dSignalInc) / sinScale;
+ double sinScale = 1 / SignalFilter::sinc (iDetFromZero * m_dSignalInc);
double dScale = 0.5 * sinScale * sinScale;
m_adFilter[i] *= dScale;
}
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Scaled Inverse Fourier Frequency: Natural Order");
+ dlgEZPlot.getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
+ }
+#endif
} // if (geometry)
} // if (spatial filtering)
nextPowerOf2++;
nextPowerOf2 += (m_iZeropad - 1);
m_nFilterPoints = 1 << nextPowerOf2;
-#ifdef DEBUG
+#if defined(DEBUG) || defined(_DEBUG)
if (m_traceLevel >= Trace::TRACE_CONSOLE)
- std::cout << "nFilterPoints = " << m_nFilterPoints << endl;
+ sys_error (ERR_TRACE, "nFilterPoints = %d", m_nFilterPoints);
#endif
}
m_nOutputPoints = m_nFilterPoints * m_iPreinterpolationFactor;
}
SignalFilter filter (m_idFilter, m_dFilterMin, m_dFilterMax, m_nFilterPoints, m_dBandwidth,
- m_dFilterParam, SignalFilter::DOMAIN_FREQUENCY);
+ m_dFilterParam, SignalFilter::DOMAIN_FREQUENCY);
m_adFilter = new double [m_nFilterPoints];
filter.copyFilterData (m_adFilter, 0, m_nFilterPoints);
- // This doesn't work!
- // Need to add filtering for divergent geometries & Frequency/Direct filtering
- // Jan 2001: Direct seems to work for equilinear and equiangular
- // however, inverse_fourier doesn't work for equiangular on all versions of CTSim tested
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Frequency Filter: Natural Order");
+ dlgEZPlot.getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
+ }
+#endif
+ // This doesn't work: Need to add filtering for divergent geometries & Frequency/Direct filtering
+ // Jan 2001: Direct seems to work for equilinear and equiangular
+ // however, inverse_fourier doesn't work for equiangular on all versions of CTSim tested
+ // Scaling is done with data in frequency space, natural order
if (m_idGeometry == Scanner::GEOMETRY_EQUILINEAR) {
for (i = 0; i < m_nFilterPoints; i++)
m_adFilter[i] *= 0.5;
} else if (m_idGeometry == Scanner::GEOMETRY_EQUIANGULAR) {
for (i = 0; i < m_nFilterPoints; i++) {
int iDetFromZero = i - ((m_nFilterPoints - 1) / 2);
- double sinScale = sin (iDetFromZero * m_dSignalInc);
- if (fabs(sinScale) < 1E-7)
- sinScale = 1;
- else
- sinScale = (iDetFromZero * m_dSignalInc) / sinScale;
+ double sinScale = 1 / SignalFilter::sinc (iDetFromZero * m_dSignalInc);
double dScale = 0.5 * sinScale * sinScale;
m_adFilter[i] *= dScale;
}
}
-#ifdef HAVE_SGP
- EZPlot* pEZPlot = NULL;
- if (pSGP && m_traceLevel >= Trace::TRACE_PLOT) {
- pEZPlot = new EZPlot;
- pEZPlot->ezset ("title Filter Filter: Natural Order");
- pEZPlot->ezset ("ylength 0.50");
- pEZPlot->ezset ("yporigin 0.00");
- pEZPlot->addCurve (m_adFilter, m_nFilterPoints);
- pEZPlot->plot (pSGP);
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Filter Geometry Scaled: Natural Order");
+ dlgEZPlot.getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
}
#endif
Fourier::shuffleNaturalToFourierOrder (m_adFilter, m_nFilterPoints);
-#ifdef HAVE_SGP
- if (pEZPlot && m_traceLevel >= Trace::TRACE_PLOT) {
- pEZPlot->ezset ("title Filter Filter: Fourier Order");
- pEZPlot->ezset ("ylength 0.50");
- pEZPlot->ezset ("yporigin 0.50");
- pEZPlot->addCurve (m_adFilter, m_nFilterPoints);
- pEZPlot->plot (pSGP);
- delete pEZPlot;
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Filter Geometry Scaled: Fourier Order");
+ dlgEZPlot.getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
}
#endif
+
+ // FILTERING: FREQUENCY - INVERSE FOURIER
+
} else if (m_idFilterGeneration == FILTER_GENERATION_INVERSE_FOURIER) {
// calculate number of filter points with zeropadding
int nSpatialPoints = 2 * (m_nSignalPoints - 1) + 1;
m_nFilterPoints = 1 << nextPowerOf2;
}
m_nOutputPoints = m_nFilterPoints * m_iPreinterpolationFactor;
-#ifdef DEBUG
+#if defined(DEBUG) || defined(_DEBUG)
if (m_traceLevel >= Trace::TRACE_CONSOLE)
- std::cout << "nFilterPoints = " << m_nFilterPoints << endl;
+ sys_error (ERR_TRACE, "nFilterPoints = %d", m_nFilterPoints);
#endif
double* adSpatialFilter = new double [m_nFilterPoints];
SignalFilter filter (m_idFilter, m_dFilterMin, m_dFilterMax, nSpatialPoints, m_dBandwidth,
- m_dFilterParam, SignalFilter::DOMAIN_SPATIAL);
+ m_dFilterParam, SignalFilter::DOMAIN_SPATIAL);
filter.copyFilterData (adSpatialFilter, 0, nSpatialPoints);
-#if defined(HAVE_WXWINDOWS) && defined(DEBUG)
- EZPlotDialog pEZPlotDlg = NULL;
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
if (g_bRunningWXWindows && m_traceLevel > 0) {
- pEZPlotDlg = new EZPlotDialog;
- pEZPlot->getEZPlot()->ezset ("title Spatial Filter: Natural Order");
- pEZPlot->getEZPlot()->ezset ("ylength 0.50");
- pEZPlot->getEZPlot()->ezset ("yporigin 0.00");
- pEZPlot->getEZPlot()->addCurve (adSpatialFilter, nSpatialPoints);
+ EZPlotDialog dlgEZPlot;;
+ dlgEZPlot.getEZPlot()->ezset ("title Spatial Filter: Natural Order");
+ dlgEZPlot.getEZPlot()->addCurve (adSpatialFilter, nSpatialPoints);
+ dlgEZPlot.ShowModal();
}
#endif
-
-// #define PRE_JAN_2001 1
+
+#define PRE_JAN_2001 1
#ifdef PRE_JAN_2001
if (m_idGeometry == Scanner::GEOMETRY_EQUILINEAR) {
- for (i = 0; i < m_nFilterPoints; i++)
+ for (i = 0; i < nSpatialPoints; i++)
adSpatialFilter[i] *= 0.5;
} else if (m_idGeometry == Scanner::GEOMETRY_EQUIANGULAR) {
- for (i = 0; i < m_nFilterPoints; i++) {
- int iDetFromZero = i - ((m_nFilterPoints - 1) / 2);
+ for (i = 0; i < nSpatialPoints; i++) {
+ int iDetFromZero = i - ((nSpatialPoints - 1) / 2);
double sinScale = sin (iDetFromZero * m_dSignalInc);
if (fabs(sinScale) < 1E-7)
sinScale = 1;
adSpatialFilter[i] *= dScale;
}
}
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;;
+ dlgEZPlot.getEZPlot()->ezset ("title Scaled Spatial Filter: Natural Order");
+ dlgEZPlot.getEZPlot()->addCurve (adSpatialFilter, nSpatialPoints);
+ dlgEZPlot.ShowModal();
+ }
+#endif
for (i = nSpatialPoints; i < m_nFilterPoints; i++)
adSpatialFilter[i] = 0;
for (i = 0; i < m_nFilterPoints; i++)
m_adFilter[i] = std::abs (acInverseFilter[i]) * m_dSignalInc;
delete acInverseFilter;
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Fourier Scaled Spatial Filter: Fourier Order");
+ dlgEZPlot.getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
+ }
+#endif
+
#else
for (i = nSpatialPoints; i < m_nFilterPoints; i++)
adSpatialFilter[i] = 0;
-
-// for (i = 0; i < m_nFilterPoints; i++)
-// adSpatialFilter[i] /= m_dSignalInc;
-
+
std::complex<double>* acInverseFilter = new std::complex<double> [m_nFilterPoints];
finiteFourierTransform (adSpatialFilter, acInverseFilter, m_nFilterPoints, FORWARD);
delete adSpatialFilter;
m_adFilter = new double [m_nFilterPoints];
for (i = 0; i < m_nFilterPoints; i++)
- m_adFilter[i] = std::abs(acInverseFilter[i]);
+ m_adFilter[i] = std::abs(acInverseFilter[i]);
delete acInverseFilter;
-
+
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Inverse Spatial Filter: Fourier order");
+ dlgEZPlot.getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
+ }
+#endif
+ Fourier::shuffleFourierToNaturalOrder(m_adFilter, m_nFilterPoints);
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Inverse Spatial Filter: Natural order");
+ dlgEZPlot.getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
+ }
+#endif
if (m_idGeometry == Scanner::GEOMETRY_EQUILINEAR) {
for (i = 0; i < m_nFilterPoints; i++)
m_adFilter[i] *= 0.5;
} else if (m_idGeometry == Scanner::GEOMETRY_EQUIANGULAR) {
for (i = 0; i < m_nFilterPoints; i++) {
int iDetFromZero = i - ((m_nFilterPoints - 1) / 2);
- double sinScale = sin (iDetFromZero * m_dSignalInc);
- if (fabs(sinScale) < 1E-7)
- sinScale = 1;
- else
- sinScale = (iDetFromZero * m_dSignalInc) / sinScale;
- double dScale = 0.5 * sinScale * sinScale;
- m_adFilter[i] *= dScale;
+ if (abs(iDetFromZero) < m_nSignalPoints) {
+ double sinScale = 1 / SignalFilter::sinc (iDetFromZero * m_dSignalInc);
+ double dScale = 0.5 * sinScale * sinScale;
+ m_adFilter[i] *= dScale;
+ }
}
}
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Scaled Inverse Spatial Filter: Natural order");
+ dlgEZPlot.getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
+ }
+#endif
+ Fourier::shuffleNaturalToFourierOrder(m_adFilter, m_nFilterPoints);
#endif
-#if defined(HAVE_WXWINDOWS) && defined(DEBUG)
- if (g_bRunningWXWindows && pEZPlotDlg && m_traceLevel > 0) {
- pEZPlotDlg->getEZPlot()->ezset ("title Spatial Filter: Inverse");
- pEZPlotDlg->getEZPlot()->ezset ("ylength 0.50");
- pEZPlotDlg->getEZPlot()->ezset ("yporigin 0.50");
- pEZPlotDlg->getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
- pEZPlotDlg->ShowModal();
- delete pEZPlotDlg;
+#if defined(HAVE_WXWINDOWS) && (defined(DEBUG) || defined(_DEBUG))
+ if (g_bRunningWXWindows && m_traceLevel > 0) {
+ EZPlotDialog dlgEZPlot;
+ dlgEZPlot.getEZPlot()->ezset ("title Spatial Filter Inverse Post Geometry Filtering");
+ dlgEZPlot.getEZPlot()->addCurve (m_adFilter, m_nFilterPoints);
+ dlgEZPlot.ShowModal();
}
#endif
}
projects / ctsim.git / blobdiff