X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fscanner.cpp;h=11cd0926ce68874d353bf3454c202b75298c2d1f;hp=9f4837da9b6fec2e1beee96f795a03a4af3c4f62;hb=1a050c98763fbbc0662731b0b76953acede6f5d7;hpb=c8b19dfaffba9f06d8b6c40cb1bb83a8964867f7 diff --git a/libctsim/scanner.cpp b/libctsim/scanner.cpp index 9f4837d..11cd092 100644 --- a/libctsim/scanner.cpp +++ b/libctsim/scanner.cpp @@ -1,7 +1,7 @@ /***************************************************************************** ** FILE IDENTIFICATION ** -** Name: scanner.cpp +** Name: scanner.cpp ** Purpose: Classes for CT scanner ** Programmer: Kevin Rosenberg ** Date Started: 1984 @@ -34,7 +34,7 @@ const int Scanner::GEOMETRY_EQUIANGULAR = 1; const int Scanner::GEOMETRY_EQUILINEAR = 2; const int Scanner::GEOMETRY_LINOGRAM = 3; -const char* const Scanner::s_aszGeometryName[] = +const char* const Scanner::s_aszGeometryName[] = { "parallel", "equiangular", @@ -42,7 +42,7 @@ const char* const Scanner::s_aszGeometryName[] = "linogram", }; -const char* const Scanner::s_aszGeometryTitle[] = +const char* const Scanner::s_aszGeometryTitle[] = { "Parallel", "Equiangular", @@ -54,7 +54,7 @@ const int Scanner::s_iGeometryCount = sizeof(s_aszGeometryName) / sizeof(const c // NAME -// DetectorArray Construct a DetectorArray +// DetectorArray Construct a DetectorArray DetectorArray::DetectorArray (const int nDet) { @@ -64,7 +64,7 @@ DetectorArray::DetectorArray (const int nDet) // NAME -// ~DetectorArray Free memory allocated to a detector array +// ~DetectorArray Free memory allocated to a detector array DetectorArray::~DetectorArray (void) { @@ -74,22 +74,22 @@ DetectorArray::~DetectorArray (void) /* NAME -* Scanner::Scanner Construct a user specified detector structure +* Scanner::Scanner Construct a user specified detector structure * * SYNOPSIS * Scanner (phm, nDet, nView, nSample) -* Phantom& phm PHANTOM that we are making detector for +* Phantom& phm PHANTOM that we are making detector for * int geomety Geometry of detector -* int nDet Number of detector along detector array -* int nView Number of rotated views -* int nSample Number of rays per detector +* int nDet Number of detector along detector array +* int nView Number of rotated views +* int nSample Number of rays per detector */ -Scanner::Scanner (const Phantom& phm, const char* const geometryName, - int nDet, int nView, int offsetView, - int nSample, const double rot_anglen, - const double dFocalLengthRatio, - const double dCenterDetectorRatio, +Scanner::Scanner (const Phantom& phm, const char* const geometryName, + int nDet, int nView, int offsetView, + int nSample, const double rot_anglen, + const double dFocalLengthRatio, + const double dCenterDetectorRatio, const double dViewRatio, const double dScanRatio) { m_fail = false; @@ -100,7 +100,7 @@ Scanner::Scanner (const Phantom& phm, const char* const geometryName, m_failMessage += geometryName; return; } - + if (nView < 1 || nDet < 1) { m_fail = true; m_failMessage = "nView & nDet must be greater than 0"; @@ -108,7 +108,7 @@ Scanner::Scanner (const Phantom& phm, const char* const geometryName, } if (nSample < 1) m_nSample = 1; - + m_nDet = nDet; m_nView = nView; m_iOffsetView = offsetView; @@ -123,7 +123,7 @@ Scanner::Scanner (const Phantom& phm, const char* const geometryName, m_dCenterDetectorLength = (m_dViewDiameter / 2) * m_dCenterDetectorRatio; m_dSourceDetectorLength = m_dFocalLength + m_dCenterDetectorLength; m_dScanDiameter = m_dViewDiameter * m_dScanRatio; - + m_dXCenter = phm.xmin() + (phm.xmax() - phm.xmin()) / 2; m_dYCenter = phm.ymin() + (phm.ymax() - phm.ymin()) / 2; m_rotLen = rot_anglen; @@ -161,7 +161,7 @@ Scanner::Scanner (const Phantom& phm, const char* const geometryName, const double dAngle = asin ((m_dScanDiameter / 2) / m_dFocalLength); const double dHalfDetLen = m_dSourceDetectorLength * tan (dAngle); - + m_detLen = dHalfDetLen * 2; m_detStart = -dHalfDetLen; m_detInc = m_detLen / m_nDet; @@ -171,7 +171,7 @@ Scanner::Scanner (const Phantom& phm, const char* const geometryName, dDetectorArrayEndOffset = m_detInc; m_detLen += dDetectorArrayEndOffset; } - + m_dFanBeamAngle = dAngle * 2; m_initPos.xs1 = m_dXCenter; m_initPos.ys1 = m_dYCenter + m_dFocalLength; @@ -205,7 +205,7 @@ Scanner::Scanner (const Phantom& phm, const char* const geometryName, m_dAngularDetLen = dAngularScale * (m_detLen + dDetectorArrayEndOffset); m_dAngularDetIncrement = dAngularScale * m_detInc; m_initPos.dAngularDet = -m_dAngularDetLen / 2; - + m_dFanBeamAngle = dAngle * 2; m_initPos.angle = m_iOffsetView * m_rotInc; m_initPos.xs1 = m_dXCenter; @@ -214,15 +214,15 @@ Scanner::Scanner (const Phantom& phm, const char* const geometryName, m_initPos.ys2 = m_dYCenter + m_dFocalLength; m_detLen += dDetectorArrayEndOffset; } - - // Calculate incrementatal rotation matrix + + // Calculate incrementatal rotation matrix GRFMTX_2D temp; xlat_mtx2 (m_rotmtxIncrement, -m_dXCenter, -m_dYCenter); rot_mtx2 (temp, m_rotInc); mult_mtx2 (m_rotmtxIncrement, temp, m_rotmtxIncrement); xlat_mtx2 (temp, m_dXCenter, m_dYCenter); mult_mtx2 (m_rotmtxIncrement, temp, m_rotmtxIncrement); - + } Scanner::~Scanner (void) @@ -234,10 +234,10 @@ const char* Scanner::convertGeometryIDToName (const int geomID) { const char *name = ""; - + if (geomID >= 0 && geomID < s_iGeometryCount) return (s_aszGeometryName[geomID]); - + return (name); } @@ -245,37 +245,37 @@ const char* Scanner::convertGeometryIDToTitle (const int geomID) { const char *title = ""; - + if (geomID >= 0 && geomID < s_iGeometryCount) return (s_aszGeometryName[geomID]); - + return (title); } int -Scanner::convertGeometryNameToID (const char* const geomName) +Scanner::convertGeometryNameToID (const char* const geomName) { int id = GEOMETRY_INVALID; - + for (int i = 0; i < s_iGeometryCount; i++) if (strcasecmp (geomName, s_aszGeometryName[i]) == 0) { id = i; break; } - + return (id); } /* NAME -* collectProjections Calculate projections for a Phantom +* collectProjections Calculate projections for a Phantom * * SYNOPSIS * collectProjections (proj, phm, start_view, nView, bStoreViewPos, trace) * Projectrions& proj Projection storage -* Phantom& phm Phantom for which we collect projections +* Phantom& phm Phantom for which we collect projections * bool bStoreViewPos TRUE then storage proj at normal view position -* int trace Trace level +* int trace Trace level */ @@ -286,8 +286,8 @@ Scanner::collectProjections (Projections& proj, const Phantom& phm, const int tr } void -Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iStartView, - const int iNumViews, const int iOffsetView, bool bStoreAtViewPosition, +Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iStartView, + const int iNumViews, const int iOffsetView, bool bStoreAtViewPosition, const int trace, SGP* pSGP) { int iStorageOffset = (bStoreAtViewPosition ? iStartView : 0); @@ -295,46 +295,46 @@ Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iS } void -Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iStartView, - const int iNumViews, const int iOffsetView, int iStorageOffset, +Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iStartView, + const int iNumViews, const int iOffsetView, int iStorageOffset, const int trace, SGP* pSGP) { m_trace = trace; double start_angle = (iStartView + iOffsetView) * proj.rotInc(); - - // Calculate initial rotation matrix + + // Calculate initial rotation matrix GRFMTX_2D rotmtx_initial, temp; xlat_mtx2 (rotmtx_initial, -m_dXCenter, -m_dYCenter); rot_mtx2 (temp, start_angle); mult_mtx2 (rotmtx_initial, temp, rotmtx_initial); xlat_mtx2 (temp, m_dXCenter, m_dYCenter); mult_mtx2 (rotmtx_initial, temp, rotmtx_initial); - + double xd1=0, yd1=0, xd2=0, yd2=0; if (m_idGeometry != GEOMETRY_EQUIANGULAR) { xd1 = m_initPos.xd1; yd1 = m_initPos.yd1; xd2 = m_initPos.xd2; yd2 = m_initPos.yd2; - xform_mtx2 (rotmtx_initial, xd1, yd1); // rotate detector endpoints - xform_mtx2 (rotmtx_initial, xd2, yd2); // to initial view_angle + xform_mtx2 (rotmtx_initial, xd1, yd1); // rotate detector endpoints + xform_mtx2 (rotmtx_initial, xd2, yd2); // to initial view_angle } - + double xs1 = m_initPos.xs1; double ys1 = m_initPos.ys1; double xs2 = m_initPos.xs2; double ys2 = m_initPos.ys2; xform_mtx2 (rotmtx_initial, xs1, ys1); // rotate source endpoints to xform_mtx2 (rotmtx_initial, xs2, ys2); // initial view angle - + int iView; double viewAngle; for (iView = 0, viewAngle = start_angle; iView < iNumViews; iView++, viewAngle += proj.rotInc()) { int iStoragePosition = iView + iStorageOffset; DetectorArray& detArray = proj.getDetectorArray( iStoragePosition ); - -#ifdef HAVE_SGP + +#ifdef HAVE_SGP if (pSGP && m_trace >= Trace::TRACE_PHANTOM) { m_pSGP = pSGP; double dWindowSize = dmax (m_detLen, m_dSourceDetectorLength) * 2; @@ -343,7 +343,7 @@ Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iS m_dXMaxWin = m_dXCenter + dHalfWindowSize; m_dYMinWin = m_dYCenter - dHalfWindowSize; m_dYMaxWin = m_dYCenter + dHalfWindowSize; - + m_pSGP->setWindow (m_dXMinWin, m_dYMinWin, m_dXMaxWin, m_dYMaxWin); m_pSGP->setRasterOp (RO_COPY); @@ -362,7 +362,7 @@ Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iS #endif phm.draw (*m_pSGP); m_dTextHeight = m_pSGP->getCharHeight (); - + traceShowParam ("Phantom:", "%s", PROJECTION_TRACE_ROW_PHANT_ID, C_BLACK, phm.name().c_str()); traceShowParam ("Geometry:", "%s", PROJECTION_TRACE_ROW_GEOMETRY, C_BLUE, convertGeometryIDToName(m_idGeometry)); traceShowParam ("Focal Length Ratio:", "%.2f", PROJECTION_TRACE_ROW_FOCAL_LENGTH, C_BLUE, m_dFocalLengthRatio); @@ -370,11 +370,11 @@ Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iS traceShowParam ("Num Detectors:", "%d", PROJECTION_TRACE_ROW_NDET, C_BLUE, proj.nDet()); traceShowParam ("Num Views:", "%d", PROJECTION_TRACE_ROW_NVIEW, C_BLUE, proj.nView()); traceShowParam ("Samples / Ray:", "%d", PROJECTION_TRACE_ROW_SAMPLES, C_BLUE, m_nSample); - + m_pSGP->setMarker (SGP::MARKER_BDIAMOND); } #endif - + #ifdef HAVE_SGP if (m_pSGP && m_trace >= Trace::TRACE_PHANTOM) { m_pSGP->setColor (C_BLACK); @@ -384,7 +384,7 @@ Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iS m_pSGP->lineAbs (xs2, ys2); m_pSGP->moveAbs (xd1, yd1); m_pSGP->lineAbs (xd2, yd2); - } else if (m_idGeometry == GEOMETRY_EQUILINEAR) { + } else if (m_idGeometry == GEOMETRY_EQUILINEAR) { m_pSGP->setPenWidth (4); m_pSGP->moveAbs (xs1, ys1); m_pSGP->lineAbs (xs2, ys2); @@ -406,19 +406,19 @@ Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iS #endif if (m_trace == Trace::TRACE_CONSOLE) std::cout << "Current View: " << iView+iStartView << std::endl; - + projectSingleView (phm, detArray, xd1, yd1, xd2, yd2, xs1, ys1, xs2, ys2, viewAngle + 3 * HALFPI); detArray.setViewAngle (viewAngle); - + #ifdef HAVE_SGP if (m_pSGP && m_trace >= Trace::TRACE_PHANTOM) { - // rs_plot (detArray, xd1, yd1, dXCenter, dYCenter, theta); + // rs_plot (detArray, xd1, yd1, dXCenter, dYCenter, theta); } #endif xform_mtx2 (m_rotmtxIncrement, xs1, ys1); xform_mtx2 (m_rotmtxIncrement, xs2, ys2); if (m_idGeometry != GEOMETRY_EQUIANGULAR) { - xform_mtx2 (m_rotmtxIncrement, xd1, yd1); // rotate detector endpoints + xform_mtx2 (m_rotmtxIncrement, xd1, yd1); // rotate detector endpoints xform_mtx2 (m_rotmtxIncrement, xd2, yd2); } } /* for each iView */ @@ -426,15 +426,15 @@ Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iS /* NAME -* rayview Calculate raysums for a view at any angle +* rayview Calculate raysums for a view at any angle * * SYNOPSIS * rayview (phm, detArray, xd1, nSample, yd1, xd2, yd2, xs1, ys1, xs2, ys2) -* Phantom& phm Phantom to scan -* DETARRAY *detArray Storage of values for detector array -* Scanner& det Scanner parameters -* double xd1, yd1, xd2, yd2 Beginning & ending detector positions -* double xs1, ys1, xs2, ys2 Beginning & ending source positions +* Phantom& phm Phantom to scan +* DETARRAY *detArray Storage of values for detector array +* Scanner& det Scanner parameters +* double xd1, yd1, xd2, yd2 Beginning & ending detector positions +* double xs1, ys1, xs2, ys2 Beginning & ending source positions * * RAY POSITIONING * For each detector, have there are a variable number of rays traced. @@ -448,15 +448,15 @@ Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iS * In that case, the detector position is the center of the detector cell. */ -void +void Scanner::projectSingleView (const Phantom& phm, DetectorArray& detArray, const double xd1, const double yd1, const double xd2, const double yd2, const double xs1, const double ys1, const double xs2, const double ys2, const double dDetAngle) { - - double sdx = (xs2 - xs1) / detArray.nDet(); // change in coords + + double sdx = (xs2 - xs1) / detArray.nDet(); // change in coords double sdy = (ys2 - ys1) / detArray.nDet(); // between source - double xs_maj = xs1 + (sdx / 2); // put ray source in center of cell + double xs_maj = xs1 + (sdx / 2); // put ray source in center of cell double ys_maj = ys1 + (sdy / 2); - + double ddx=0, ddy=0, ddx2=0, ddy2=0, ddx2_ofs=0, ddy2_ofs=0, xd_maj=0, yd_maj=0; double dAngleInc=0, dAngleSampleInc=0, dAngleSampleOffset=0, dAngleMajor=0; if (m_idGeometry == GEOMETRY_EQUIANGULAR) { @@ -465,19 +465,19 @@ Scanner::projectSingleView (const Phantom& phm, DetectorArray& detArray, const d dAngleSampleOffset = dAngleSampleInc / 2; dAngleMajor = dDetAngle - (m_dAngularDetLen/2) + dAngleSampleOffset; } else { - ddx = (xd2 - xd1) / detArray.nDet(); // change in coords + ddx = (xd2 - xd1) / detArray.nDet(); // change in coords ddy = (yd2 - yd1) / detArray.nDet(); // between detectors - ddx2 = ddx / m_nSample; // Incr. between rays with detector cell - ddy2 = ddy / m_nSample; // Doesn't include detector endpoints + ddx2 = ddx / m_nSample; // Incr. between rays with detector cell + ddy2 = ddy / m_nSample; // Doesn't include detector endpoints ddx2_ofs = ddx2 / 2; // offset of 1st ray from start of detector cell ddy2_ofs = ddy2 / 2; - + xd_maj = xd1 + ddx2_ofs; // Incr. between detector cells yd_maj = yd1 + ddy2_ofs; } - + DetectorValue* detval = detArray.detValues(); - + if (phm.getComposition() == P_UNIT_PULSE) { // put unit pulse in center of view for (int d = 0; d < detArray.nDet(); d++) detval[d] = 0; @@ -499,7 +499,7 @@ Scanner::projectSingleView (const Phantom& phm, DetectorArray& detArray, const d xd = m_dCenterDetectorLength * cos (dAngle); yd = m_dCenterDetectorLength * sin (dAngle); } - + #ifdef HAVE_SGP if (m_pSGP && m_trace >= Trace::TRACE_PROJECTIONS) { m_pSGP->setColor (C_YELLOW); @@ -508,14 +508,14 @@ Scanner::projectSingleView (const Phantom& phm, DetectorArray& detArray, const d m_pSGP->lineAbs (xd, yd); } #endif - + sum += projectSingleLine (phm, xd, yd, xs, ys); - + #ifdef HAVE_SGP - // if (m_trace >= Trace::TRACE_CLIPPING) { - // traceShowParam ("Attenuation:", "%s", PROJECTION_TRACE_ROW_ATTEN, C_LTMAGENTA, " "); - // traceShowParam ("Attenuation:", "%.3f", PROJECTION_TRACE_ROW_ATTEN, C_LTMAGENTA, sum); - // } + // if (m_trace >= Trace::TRACE_CLIPPING) { + // traceShowParam ("Attenuation:", "%s", PROJECTION_TRACE_ROW_ATTEN, C_LTMAGENTA, " "); + // traceShowParam ("Attenuation:", "%.3f", PROJECTION_TRACE_ROW_ATTEN, C_LTMAGENTA, sum); + // } #endif if (m_idGeometry == GEOMETRY_EQUIANGULAR) dAngle += dAngleSampleInc; @@ -524,7 +524,7 @@ Scanner::projectSingleView (const Phantom& phm, DetectorArray& detArray, const d yd += ddy2; } } // for each sample in detector - + detval[d] = sum / m_nSample; xs_maj += sdx; ys_maj += sdy; @@ -539,22 +539,22 @@ Scanner::projectSingleView (const Phantom& phm, DetectorArray& detArray, const d } -void +void Scanner::traceShowParam (const char *szLabel, const char *fmt, int row, int color, ...) -{ +{ va_list arg; va_start(arg, color); #ifdef HAVE_SGP traceShowParamRasterOp (RO_COPY, szLabel, fmt, row, color, arg); #else traceShowParamRasterOp (0, szLabel, fmt, row, color, arg); -#endif +#endif va_end(arg); } -void +void Scanner::traceShowParamXOR (const char *szLabel, const char *fmt, int row, int color, ...) -{ +{ va_list arg; va_start(arg, color); #ifdef HAVE_SGP @@ -565,13 +565,13 @@ Scanner::traceShowParamXOR (const char *szLabel, const char *fmt, int row, int c va_end(arg); } -void +void Scanner::traceShowParamRasterOp (int iRasterOp, const char *szLabel, const char *fmt, int row, int color, va_list args) -{ +{ char szValue[256]; - + vsnprintf (szValue, sizeof(szValue), fmt, args); - + #ifdef HAVE_SGP if (m_pSGP) { m_pSGP->setRasterOp (iRasterOp); @@ -593,7 +593,7 @@ Scanner::traceShowParamRasterOp (int iRasterOp, const char *szLabel, const char m_pSGP->moveAbs (dXPos + dValueOffset, dYPos); m_pSGP->drawText (szValue); } - } else + } else #endif { cio_put_str (szLabel); @@ -605,38 +605,38 @@ Scanner::traceShowParamRasterOp (int iRasterOp, const char *szLabel, const char /* NAME -* projectSingleLine INTERNAL: Calculates raysum along a line for a Phantom +* projectSingleLine INTERNAL: Calculates raysum along a line for a Phantom * * SYNOPSIS * rsum = phm_ray_attenuation (phm, x1, y1, x2, y2) -* double rsum Ray sum of Phantom along given line -* Phantom& phm; Phantom from which to calculate raysum -* double *x1, *y1, *x2, y2 Endpoints of ray path (in Phantom coords) +* double rsum Ray sum of Phantom along given line +* Phantom& phm; Phantom from which to calculate raysum +* double *x1, *y1, *x2, y2 Endpoints of ray path (in Phantom coords) */ -double +double Scanner::projectSingleLine (const Phantom& phm, const double x1, const double y1, const double x2, const double y2) { - // check ray against each pelem in Phantom + // check ray against each pelem in Phantom double rsum = 0.0; for (PElemConstIterator i = phm.listPElem().begin(); i != phm.listPElem().end(); i++) rsum += projectLineAgainstPElem (**i, x1, y1, x2, y2); - + return (rsum); } /* NAME -* pelem_ray_attenuation Calculate raysum of an pelem along one line +* pelem_ray_attenuation Calculate raysum of an pelem along one line * * SYNOPSIS * rsum = pelem_ray_attenuation (pelem, x1, y1, x2, y2) -* double rsum Computed raysum -* PhantomElement& pelem Pelem to scan -* double x1, y1, x2, y2 Endpoints of raysum line +* double rsum Computed raysum +* PhantomElement& pelem Pelem to scan +* double x1, y1, x2, y2 Endpoints of raysum line */ -double +double Scanner::projectLineAgainstPElem (const PhantomElement& pelem, double x1, double y1, double x2, double y2) { if (! pelem.clipLineWorldCoords (x1, y1, x2, y2)) { @@ -644,7 +644,7 @@ Scanner::projectLineAgainstPElem (const PhantomElement& pelem, double x1, double cio_tone (1000., 0.05); return (0.0); } - + #ifdef HAVE_SGP if (m_pSGP && m_trace == Trace::TRACE_CLIPPING) { m_pSGP->setRasterOp (RO_XOR); @@ -656,7 +656,7 @@ Scanner::projectLineAgainstPElem (const PhantomElement& pelem, double x1, double m_pSGP->setRasterOp (RO_SET); } #endif - + double len = lineLength (x1, y1, x2, y2); return (len * pelem.atten()); }