X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fphantom.cpp;h=9125e36be718af7ea36959b42bf5461cd673f0ab;hp=d07b6a32eae0035242d8c467b5838a55e066655f;hb=f7d2b7144f32a7bd157b7689022e62944b82fcc1;hpb=4b18b0a7fed4e25130c6edf7929d0df50b8c24ea diff --git a/libctsim/phantom.cpp b/libctsim/phantom.cpp index d07b6a3..9125e36 100644 --- a/libctsim/phantom.cpp +++ b/libctsim/phantom.cpp @@ -9,7 +9,7 @@ ** This is part of the CTSim program ** Copyright (C) 1983-2000 Kevin Rosenberg ** -** $Id: phantom.cpp,v 1.8 2000/07/18 03:14:35 kevin Exp $ +** $Id: phantom.cpp,v 1.23 2000/12/21 03:40:58 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 @@ -27,12 +27,42 @@ #include "ct.h" +const int PhantomElement::POINTS_PER_CIRCLE = 360; +const double PhantomElement::SCALE_PELEM_EXTENT=0.005; // increase pelem limits by 0.5% + +const int Phantom::PHM_INVALID = -1; +const int Phantom::PHM_HERMAN = 0; +const int Phantom::PHM_B_HERMAN = 1; +const int Phantom::PHM_SHEPP_LOGAN = 2; +const int Phantom::PHM_B_SHEPP_LOGAN = 3; +const int Phantom::PHM_UNITPULSE = 4; + +const char* Phantom::s_aszPhantomName[] = +{ + {"herman"}, + {"herman-b"}, + {"shepp-logan"}, + {"shepp-logan-b"}, + {"unitpulse"}, +}; + +const char* Phantom::s_aszPhantomTitle[] = +{ + {"Herman Head"}, + {"Herman Head (Bordered)"}, + {"Shepp-Logan"}, + {"Shepp-Logan (Bordered)"}, + {"Unit Pulse"}, +}; + +const int Phantom::s_iPhantomCount = sizeof(s_aszPhantomName) / sizeof(const char*); + // CLASS IDENTIFICATION -// Phanton +// Phantom // -Phantom::Phantom (void) +Phantom::Phantom () { init (); } @@ -45,7 +75,7 @@ Phantom::Phantom (const char* const phmName) } void -Phantom::init (void) +Phantom::init () { m_nPElem = 0; m_xmin = 1E30; @@ -58,7 +88,7 @@ Phantom::init (void) m_id = PHM_INVALID; } -Phantom::~Phantom (void) +Phantom::~Phantom () { for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) { delete *i; @@ -67,39 +97,37 @@ Phantom::~Phantom (void) const char* -Phantom::convertPhantomIDToName (const PhantomID phmID) +Phantom::convertPhantomIDToName (int phmID) { - const char *name = ""; + static const char *name = ""; - if (phmID == PHM_HERMAN) - name = PHM_HERMAN_STR; - else if (phmID == PHM_BHERMAN) - name = PHM_BHERMAN_STR; - else if (phmID == PHM_ROWLAND) - name = PHM_ROWLAND_STR; - else if (phmID == PHM_BROWLAND) - name = PHM_BROWLAND_STR; - else if (phmID == PHM_UNITPULSE) - name = PHM_UNITPULSE_STR; + if (phmID >= 0 && phmID < s_iPhantomCount) + return (s_aszPhantomName[phmID]); return (name); } + +const char* +Phantom::convertPhantomIDToTitle (int phmID) +{ + static const char *title = ""; + + if (phmID >= 0 && phmID < s_iPhantomCount) + return (s_aszPhantomName[phmID]); + + return (title); +} -Phantom::PhantomID +int Phantom::convertNameToPhantomID (const char* const phmName) { - PhantomID id = PHM_INVALID; + int id = PHM_INVALID; - if (strcasecmp (phmName, PHM_HERMAN_STR) == 0) - id = PHM_HERMAN; - else if (strcasecmp (phmName, PHM_BHERMAN_STR) == 0) - id = PHM_BHERMAN; - else if (strcasecmp (phmName, PHM_ROWLAND_STR) == 0) - id = PHM_ROWLAND; - else if (strcasecmp (phmName, PHM_BROWLAND_STR) == 0) - id = PHM_BROWLAND; - else if (strcasecmp (phmName, PHM_UNITPULSE_STR) == 0) - id = PHM_UNITPULSE; + for (int i = 0; i < s_iPhantomCount; i++) + if (strcasecmp (phmName, s_aszPhantomName[i]) == 0) { + id = i; + break; + } return (id); } @@ -108,7 +136,7 @@ Phantom::convertNameToPhantomID (const char* const phmName) bool Phantom::createFromPhantom (const char* const phmName) { - PhantomID phmid = convertNameToPhantomID (phmName); + int phmid = convertNameToPhantomID (phmName); if (phmid == PHM_INVALID) { m_fail = true; m_failMessage = "Invalid phantom name "; @@ -122,21 +150,21 @@ Phantom::createFromPhantom (const char* const phmName) } bool -Phantom::createFromPhantom (const PhantomID phmid) +Phantom::createFromPhantom (const int phmid) { switch (phmid) { case PHM_HERMAN: addStdHerman(); break; - case PHM_BHERMAN: + case PHM_B_HERMAN: addStdHermanBordered(); break; - case PHM_ROWLAND: - addStdRowland(); + case PHM_SHEPP_LOGAN: + addStdSheppLogan(); break; - case PHM_BROWLAND: - addStdRowlandBordered (); + case PHM_B_SHEPP_LOGAN: + addStdSheppLoganBordered(); break; case PHM_UNITPULSE: m_composition = P_UNIT_PULSE; @@ -170,34 +198,32 @@ Phantom::createFromPhantom (const PhantomID phmid) bool Phantom::createFromFile (const char* const fname) { - bool stoploop = false; - bool retval = false; + bool bGoodFile = true; FILE *fp; if ((fp = fopen (fname, "r")) == NULL) return (false); - do { + m_name = fname; + + while (1) { double cx, cy, u, v, rot, dens; char pelemtype[80]; - int n = fscanf (fp, "%79s %lf %lf %lf %lf %lf %lf", - pelemtype, &cx, &cy, &u, &v, &rot, &dens); + + int status = fscanf (fp, "%79s %lf %lf %lf %lf %lf %lf", pelemtype, &cx, &cy, &u, &v, &rot, &dens); - if (n == EOF || n == 0) { /* end of file */ - stoploop = true; - retval = false; - } else if (n != 7) { - stoploop = true; - retval = false; - } else { - addPElem (pelemtype, cx, cy, u, v, rot, dens); - retval = true; + if (status == static_cast(EOF)) + break; + else if (status != 7) { + sys_error (ERR_WARNING, "Insufficient fields reading phantom file %s [Phantom::createFromFile]", fname); + bGoodFile = false; } - } while (stoploop == false); + addPElem (pelemtype, cx, cy, u, v, rot, dens); + } fclose (fp); - return (retval); + return (bGoodFile); } @@ -248,7 +274,7 @@ Phantom::addPElem (const char *type, const double cx, const double cy, const dou */ void -Phantom::print (void) const +Phantom::print () const { printf("PRINTING Phantom\n\n"); printf("number of pelems in Phantom = %d\n", m_nPElem); @@ -278,31 +304,32 @@ Phantom::print (void) const #ifdef HAVE_SGP void -Phantom::show (void) const +Phantom::show () const { - double wsize = m_xmax - m_xmin; - double xmin = m_xmin; - double ymin = m_ymin; - double xmax, ymax; - SGP_ID gid; + SGPDriver driverSGP ("Phantom Show"); + SGP sgp (driverSGP); - if ((m_ymax - m_ymin) > wsize) - wsize = m_ymax - m_ymin; - wsize *= 1.1; + show (sgp); - xmax = xmin + wsize; - ymax = ymin + wsize; - - printf("Drawing Phantom:\n\n"); - printf(" data limits: %9.3g, %9.3g, %9.3g, %9.3g\n", m_xmin, m_ymin, m_xmax, m_ymax); - printf(" window size: %9.3g, %9.3g, %9.3g, %9.3g\n", xmin, ymin, xmax, ymax); + std::cout << "Press return to continue"; + cio_kb_getc(); +} - gid = sgp2_init (0, 0, "Phantom Show"); - sgp2_window (xmin, ymin, xmax, ymax); +void +Phantom::show (SGP& sgp) const +{ + double wsize = m_xmax - m_xmin; + if ((m_ymax - m_ymin) > wsize) + wsize = m_ymax - m_ymin; + wsize *= 1.01; + double halfWindow = wsize / 2; - draw(); + double xcent = m_xmin + (m_xmax - m_xmin) / 2; + double ycent = m_ymin + (m_ymax - m_ymin) / 2; - sgp2_close (gid); + sgp.setWindow (xcent - halfWindow, ycent - halfWindow, xcent + halfWindow, ycent + halfWindow); + + draw (sgp); } #endif @@ -316,16 +343,16 @@ Phantom::show (void) const #ifdef HAVE_SGP void -Phantom::draw (void) const +Phantom::draw (SGP& sgp) const { for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) - sgp2_polyline_abs ((*i)->xOutline(), (*i)->yOutline(), (*i)->nOutlinePoints()); + sgp.polylineAbs ((*i)->xOutline(), (*i)->yOutline(), (*i)->nOutlinePoints()); } #endif /* NAME - * addStdRowland Make head phantom of S.W. Rowland + * addStdSheppLogan Make head phantom of Shepp-Logan * * REFERENCES * S. W. Rowland, "Computer Implementation of Image Reconstruction @@ -334,7 +361,7 @@ Phantom::draw (void) const */ void -Phantom::addStdRowland (void) +Phantom::addStdSheppLogan () { addPElem ("ellipse", 0.0000, 0.0000, 0.6900, 0.9200, 0.0, 1.00); addPElem ("ellipse", 0.0000, -0.0184, 0.6624, 0.8740, 0.0, -0.98); @@ -350,10 +377,10 @@ Phantom::addStdRowland (void) } void -Phantom::addStdRowlandBordered (void) +Phantom::addStdSheppLoganBordered () { - addStdRowland (); - addPElem ("ellipse", 0.000, 0.0000, 0.7500, 1.000, 0.0, 0.00); + addStdSheppLogan (); + addPElem ("rectangle", 0.000, 0.0000, 0.8600, 1.150, 0.0, 0.00); } /* NAME @@ -365,7 +392,7 @@ Phantom::addStdRowlandBordered (void) */ void -Phantom::addStdHerman (void) +Phantom::addStdHerman () { addPElem ("ellipse", 0.000, 1.50, 0.375, 0.3000, 90.00, -0.003); addPElem ("ellipse", 0.675, -0.75, 0.225, 0.1500, 140.00, 0.010); @@ -385,10 +412,10 @@ Phantom::addStdHerman (void) } void -Phantom::addStdHermanBordered (void) +Phantom::addStdHermanBordered () { addStdHerman(); - addPElem ("ellipse", 0.000, 0.000, 8.650, 8.650, 0.00, 0.000); + addPElem ("rectangle", 0.000, 0.00, 10.780, 8.110, 90.00, 0.000); } @@ -406,11 +433,11 @@ Phantom::addStdHermanBordered (void) void Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace) const { - convertToImagefile (im, in_nsample, trace, 0, im.nx()); + convertToImagefile (im, in_nsample, trace, 0, im.nx(), true); } void -Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace, const int colStart, const int colCount) const +Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace, const int colStart, const int colCount, bool bStoreAtColumnPos) const { int nx = im.nx(); int ny = im.ny(); @@ -452,8 +479,12 @@ Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trac ImageFileArray v = im.getArray(); for (int ix = 0; ix < colCount; ix++) - for (int iy = 0; iy < ny; iy++) - v[ix][iy] = 0; + for (int iy = 0; iy < ny; iy++) { + int iColStore = ix; + if (bStoreAtColumnPos) + iColStore += colStart; + v[iColStore][iy] = 0; + } double x_start = xmin + (colStart * xinc); for (PElemConstIterator pelem = m_listPElem.begin(); pelem != m_listPElem.end(); pelem++) { @@ -461,11 +492,14 @@ Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trac double x, y, xi, yi; int ix, iy, kx, ky; for (ix = 0, x = x_start; ix < colCount; ix++, x += xinc) { - for (iy = 0, y = ymin; iy < ny; iy++, y += yinc) { - for (kx = 0, xi = x + kxofs; kx < nsample; kx++, xi += kxinc) { - for (ky = 0, yi = y + kyofs; ky < nsample; ky++, yi += kyinc) - if (rPElem.isPointInside (xi, yi, PHM_COORD) == TRUE) - v[ix][iy] += rPElem.atten(); + int iColStore = ix; + if (bStoreAtColumnPos) + iColStore += colStart; + for (iy = 0, y = ymin; iy < ny; iy++, y += yinc) { + for (kx = 0, xi = x + kxofs; kx < nsample; kx++, xi += kxinc) { + for (ky = 0, yi = y + kyofs; ky < nsample; ky++, yi += kyinc) + if (rPElem.isPointInside (xi, yi, PHM_COORD) == TRUE) + v[iColStore][iy] += rPElem.atten(); } // for kx } /* for iy */ } /* for ix */ @@ -473,11 +507,16 @@ Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trac if (nsample > 1) { - double factor = 1.0 / (nsample * nsample); - - for (int ix = 0; ix < colCount; ix++) - for (int iy = 0; iy < ny; iy++) - v[ix][iy] *= factor; + double factor = 1.0 / static_cast(nsample * nsample); + + + for (int ix = 0; ix < colCount; ix++) { + int iColStore = ix; + if (bStoreAtColumnPos) + iColStore += colStart; + for (int iy = 0; iy < ny; iy++) + v[iColStore][iy] *= factor; + } } } @@ -515,7 +554,7 @@ PhantomElement::PhantomElement (const char *type, const double cx, const double } -PhantomElement::~PhantomElement (void) +PhantomElement::~PhantomElement () { delete m_xOutline; delete m_yOutline; @@ -543,7 +582,7 @@ PhantomElement::convertNameToType (const char* const typeName) } void -PhantomElement::makeTransformMatrices (void) +PhantomElement::makeTransformMatrices () { GRFMTX_2D temp; @@ -583,7 +622,7 @@ PhantomElement::makeTransformMatrices (void) */ void -PhantomElement::makeVectorOutline (void) +PhantomElement::makeVectorOutline () { double radius, theta, start, stop; double xfact, yfact;