+ m_nOutputPoints = m_nFilterPoints * m_iPreinterpolationFactor;
+#ifdef DEBUG
+ if (m_traceLevel >= Trace::TRACE_CONSOLE)
+ std::cout << "nFilterPoints = " << m_nFilterPoints << endl;
+#endif
+ 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);
+#if defined(HAVE_WXWINDOWS) && defined(DEBUG)
+ EZPlotDialog pEZPlotDlg = NULL;
+ 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);
+ }
+#endif
+
+// #define PRE_JAN_2001 1
+#ifdef PRE_JAN_2001
+ if (m_idGeometry == Scanner::GEOMETRY_EQUILINEAR) {
+ for (i = 0; i < m_nFilterPoints; 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);
+ 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;
+ adSpatialFilter[i] *= dScale;
+ }
+ }
+ 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];
+ 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;
+#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]);
+ delete acInverseFilter;
+
+ 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;
+ }
+ }
+#endif