** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: procsignal.cpp,v 1.11 2000/12/29 15:45:06 kevin Exp $
+** $Id: procsignal.cpp,v 1.14 2001/01/02 16:02:13 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
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)
-{\r
+{
int i;
m_idFilter = idFilter;
m_idDomain = idDomain;
pEZPlot->plot (pSGP);
}
#endif
- shuffleNaturalToFourierOrder (adFrequencyFilter, m_nFilterPoints);
+ Fourier::shuffleNaturalToFourierOrder (adFrequencyFilter, m_nFilterPoints);
#ifdef HAVE_SGP
if (pEZPlot && m_traceLevel >= Trace::TRACE_PLOT) {
pEZPlot->ezset ("title Filter Response: Fourier Order");
pEZPlot->plot (pSGP);
}
#endif
- ProcessSignal::finiteFourierTransform (adFrequencyFilter, m_adFilter, m_nFilterPoints, -1);
- delete adFrequencyFilter;\r
+ 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->plot (pSGP);
}
#endif
- shuffleFourierToNaturalOrder (m_adFilter, m_nFilterPoints);
+ 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->plot (pSGP);
}
#endif
- shuffleNaturalToFourierOrder (m_adFilter, m_nFilterPoints);
+ Fourier::shuffleNaturalToFourierOrder (m_adFilter, m_nFilterPoints);
#ifdef HAVE_SGP
if (pEZPlot && m_traceLevel >= Trace::TRACE_PLOT) {
pEZPlot->ezset ("title Filter Filter: Fourier Order");
if (m_traceLevel >= Trace::TRACE_CONSOLE)
std::cout << "nFilterPoints = " << m_nFilterPoints << endl;
#endif
- double* adSpatialFilter = new double [m_nFilterPoints];\r
+ double* adSpatialFilter = new double [m_nFilterPoints];
SignalFilter filter (m_idFilter, m_dFilterMin, m_dFilterMax, nSpatialPoints, m_dBandwidth, m_dFilterParam, SignalFilter::DOMAIN_SPATIAL);
filter.copyFilterData (adSpatialFilter, 0, nSpatialPoints);
#ifdef HAVE_SGP
double dScale = 0.5 * sinScale * sinScale;
adSpatialFilter[i] *= dScale;
}
- }\r
+ }
for (i = nSpatialPoints; i < m_nFilterPoints; i++)
adSpatialFilter[i] = 0;
m_adFilter = new double [m_nFilterPoints];
- std::complex<double>* acInverseFilter = new std::complex<double> [m_nFilterPoints];\r
- finiteFourierTransform (adSpatialFilter, acInverseFilter, m_nFilterPoints, 1);
- delete adSpatialFilter;\r
+ std::complex<double>* acInverseFilter = new std::complex<double> [m_nFilterPoints];
+ finiteFourierTransform (adSpatialFilter, acInverseFilter, m_nFilterPoints, BACKWARD);
+ delete adSpatialFilter;
for (i = 0; i < m_nFilterPoints; i++)
- m_adFilter[i] = std::abs(acInverseFilter[i]) * m_dSignalInc;
- delete acInverseFilter;\r
+ m_adFilter[i] = std::abs (acInverseFilter[i]) * m_dSignalInc;
+ delete acInverseFilter;
#ifdef HAVE_SGP
if (pEZPlot && m_traceLevel >= Trace::TRACE_PLOT) {
pEZPlot->ezset ("title Spatial Filter: Inverse");
pEZPlot->ezset ("yporigin 0.50");
pEZPlot->addCurve (m_adFilter, m_nFilterPoints);
pEZPlot->plot (pSGP);
- delete pEZPlot;\r
+ delete pEZPlot;
}
#endif
}
ProcessSignal::filterSignal (const float constInput[], double output[]) const
{
double* input = new double [m_nSignalPoints];
- int i;\r
+ int i;
for (i = 0; i < m_nSignalPoints; i++)
input[i] = constInput[i];
int iDetFromCenter = i - (m_nSignalPoints / 2);
input[i] *= m_dFocalLength * cos (iDetFromCenter * m_dSignalInc);
}
- }\r
+ }
if (m_idFilterMethod == FILTER_METHOD_CONVOLUTION) {
for (i = 0; i < m_nSignalPoints; i++)
output[i] = convolve (input, m_dSignalInc, i, m_nSignalPoints);
for (i = m_nSignalPoints; i < m_nFilterPoints; i++)
inputSignal[i] = 0; // zeropad
std::complex<double>* fftSignal = new std::complex<double> [m_nFilterPoints];
- finiteFourierTransform (inputSignal, fftSignal, m_nFilterPoints, -1);\r
+ finiteFourierTransform (inputSignal, fftSignal, m_nFilterPoints, FORWARD);
delete inputSignal;
for (i = 0; i < m_nFilterPoints; i++)
fftSignal[i] *= m_adFilter[i];
double* inverseFourier = new double [m_nFilterPoints];
- finiteFourierTransform (fftSignal, inverseFourier, m_nFilterPoints, 1);\r
+ finiteFourierTransform (fftSignal, inverseFourier, m_nFilterPoints, BACKWARD);
delete fftSignal;
for (i = 0; i < m_nSignalPoints; i++)
- output[i] = inverseFourier[i];\r
+ output[i] = inverseFourier[i];
delete inverseFourier;
} else if (m_idFilterMethod == FILTER_METHOD_FOURIER_TABLE) {
double* inputSignal = new double [m_nFilterPoints];
for (i = m_nSignalPoints; i < m_nFilterPoints; i++)
inputSignal[i] = 0; // zeropad
std::complex<double>* fftSignal = new std::complex<double> [m_nFilterPoints];
- finiteFourierTransform (inputSignal, fftSignal, -1);\r
+ finiteFourierTransform (inputSignal, fftSignal, FORWARD);
delete inputSignal;
for (i = 0; i < m_nFilterPoints; i++)
fftSignal[i] *= m_adFilter[i];
double* inverseFourier = new double [m_nFilterPoints];
- finiteFourierTransform (fftSignal, inverseFourier, 1);\r
+ finiteFourierTransform (fftSignal, inverseFourier, BACKWARD);
delete fftSignal;
for (i = 0; i < m_nSignalPoints; i++)
- output[i] = inverseFourier[i];\r
+ output[i] = inverseFourier[i];
delete inverseFourier;
}
#if HAVE_FFTW
fftw_real* fftOutput = new fftw_real [ m_nFilterPoints ];
rfftw_one (m_realPlanForward, m_adRealFftInput, fftOutput);
for (i = 0; i < m_nFilterPoints; i++)
- m_adRealFftSignal[i] = m_adFilter[i] * fftOutput[i];\r
+ m_adRealFftSignal[i] = m_adFilter[i] * fftOutput[i];
delete [] fftOutput;
for (i = m_nFilterPoints; i < m_nOutputPoints; i++)
m_adRealFftSignal[i] = 0;
fftw_real* ifftOutput = new fftw_real [ m_nOutputPoints ];
rfftw_one (m_realPlanBackward, m_adRealFftSignal, ifftOutput);
for (i = 0; i < m_nSignalPoints * m_iPreinterpolationFactor; i++)
- output[i] = ifftOutput[i];\r
+ output[i] = ifftOutput[i];
delete [] ifftOutput;
} else if (m_idFilterMethod == FILTER_METHOD_FFTW) {
for (i = 0; i < m_nSignalPoints; i++)
for (i = 0; i < m_nFilterPoints; i++) {
m_adComplexFftSignal[i].re = m_adFilter[i] * fftOutput[i].re;
m_adComplexFftSignal[i].im = m_adFilter[i] * fftOutput[i].im;
- }\r
+ }
delete [] fftOutput;
fftw_complex* ifftOutput = new fftw_complex [ m_nOutputPoints ];
fftw_one (m_complexPlanBackward, m_adComplexFftSignal, ifftOutput);
for (i = 0; i < m_nSignalPoints * m_iPreinterpolationFactor; i++)
- output[i] = ifftOutput[i].re;\r
+ output[i] = ifftOutput[i].re;
delete [] ifftOutput;
}
-#endif\r
+#endif
delete input;
}
finiteFourierTransform (input, complexOutput, n, direction);
for (int i = 0; i < n; i++)
- output[i] = complexOutput[i].real();\r
+ output[i] = complexOutput[i].real();
delete [] complexOutput;
}
}
}
-// Odd Number of Points
-// Natural Frequency Order: -(n-1)/2...-1,0,1...(n-1)/2
-// Fourier Frequency Order: 0, 1..(n-1)/2,-(n-1)/2...-1
-// Even Number of Points
-// Natural Frequency Order: -n/2...-1,0,1...((n/2)-1)
-// Fourier Frequency Order: 0,1...((n/2)-1),-n/2...-1
-
-void\r
-ProcessSignal::shuffleNaturalToFourierOrder (double* pdVector, const int n)\r
-{\r
- double* pdTemp = new double [n];\r
- int i;\r
- if (n % 2) { // Odd\r
- int iHalfN = (n - 1) / 2;\r
- \r
- pdTemp[0] = pdVector[iHalfN];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i + 1] = pdVector[i + 1 + iHalfN];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i + iHalfN + 1] = pdVector[i];\r
- } else { // Even\r
- int iHalfN = n / 2;\r
- pdTemp[0] = pdVector[iHalfN];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i + 1] = pdVector[i + iHalfN];\r
- for (i = 0; i < iHalfN - 1; i++)\r
- pdTemp[i + iHalfN + 1] = pdVector[i];\r
- }\r
- \r
- for (i = 0; i < n; i++)\r
- pdVector[i] = pdTemp[i];\r
- delete pdTemp;\r
-}\r
-\r
-void\r
-ProcessSignal::shuffleNaturalToFourierOrder (std::complex<double>* pdVector, const int n)\r
-{\r
- std::complex<double>* pdTemp = new std::complex<double> [n];\r
- int i;\r
- if (n % 2) { // Odd\r
- int iHalfN = (n - 1) / 2;\r
- \r
- pdTemp[0] = pdVector[iHalfN];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i + 1] = pdVector[i + 1 + iHalfN];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i + iHalfN + 1] = pdVector[i];\r
- } else { // Even\r
- int iHalfN = n / 2;\r
- pdTemp[0] = pdVector[iHalfN];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i + 1] = pdVector[i + iHalfN];\r
- for (i = 0; i < iHalfN - 1; i++)\r
- pdTemp[i + iHalfN + 1] = pdVector[i];\r
- }\r
- \r
- for (i = 0; i < n; i++)\r
- pdVector[i] = pdTemp[i];\r
- delete [] pdTemp;\r
-}\r
-\r
-
-void\r
-ProcessSignal::shuffleFourierToNaturalOrder (double* pdVector, const int n)\r
-{\r
- double* pdTemp = new double [n];\r
- int i;\r
- if (n % 2) { // Odd\r
- int iHalfN = (n - 1) / 2;\r
- \r
- pdTemp[iHalfN] = pdVector[0];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i + 1 + iHalfN] = pdVector[i + 1];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i] = pdVector[i + iHalfN + 1];\r
- } else { // Even\r
- int iHalfN = n / 2;\r
- pdTemp[iHalfN] = pdVector[0];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i] = pdVector[i + iHalfN];\r
- for (i = 0; i < iHalfN - 1; i++)\r
- pdTemp[i + iHalfN + 1] = pdVector[i+1];\r
- }\r
- \r
- for (i = 0; i < n; i++)\r
- pdVector[i] = pdTemp[i];\r
- delete pdTemp;\r
-}\r
-\r
-void\r
-ProcessSignal::shuffleFourierToNaturalOrder (std::complex<double>* pdVector, const int n)\r
-{\r
- std::complex<double>* pdTemp = new std::complex<double> [n];\r
- int i;\r
- if (n % 2) { // Odd\r
- int iHalfN = (n - 1) / 2;\r
- \r
- pdTemp[iHalfN] = pdVector[0];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i + 1 + iHalfN] = pdVector[i + 1];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i] = pdVector[i + iHalfN + 1];\r
- } else { // Even\r
- int iHalfN = n / 2;\r
- pdTemp[iHalfN] = pdVector[0];\r
- for (i = 0; i < iHalfN; i++)\r
- pdTemp[i] = pdVector[i + iHalfN];\r
- for (i = 0; i < iHalfN - 1; i++)\r
- pdTemp[i + iHalfN + 1] = pdVector[i+1];\r
- }\r
- \r
- for (i = 0; i < n; i++)\r
- pdVector[i] = pdTemp[i];\r
- delete [] pdTemp;\r
-}\r
-\r
projects / ctsim.git / blobdiff