X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fphantom.cpp;h=a0ddc408937b8f8f382c36ae95bbc320a522ace0;hp=f8b1278cef478037b28352f45537e8e8185b22ce;hb=50fd2b2fb2ff63871986e6853dbebad0ecd00698;hpb=711cae0ee02e046370fdb4d6c6f440596ff71980 diff --git a/libctsim/phantom.cpp b/libctsim/phantom.cpp index f8b1278..a0ddc40 100644 --- a/libctsim/phantom.cpp +++ b/libctsim/phantom.cpp @@ -7,9 +7,9 @@ ** Date Started: Aug 1984 ** ** This is part of the CTSim program -** Copyright (C) 1983-2000 Kevin Rosenberg +** Copyright (c) 1983-2001 Kevin Rosenberg ** -** $Id: phantom.cpp,v 1.11 2000/07/28 08:28:08 kevin Exp $ +** $Id: phantom.cpp,v 1.29 2001/02/09 14:34:16 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 @@ -27,29 +27,25 @@ #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_BHERMAN = 1; -const int Phantom::PHM_ROWLAND = 2; -const int Phantom::PHM_BROWLAND = 3; -const int Phantom::PHM_UNITPULSE = 4; +const int Phantom::PHM_SHEPP_LOGAN = 1; +const int Phantom::PHM_UNITPULSE = 2; const char* Phantom::s_aszPhantomName[] = { {"herman"}, - {"bherman"}, - {"rowland"}, - {"browland"}, - {"unitpulse"}, + {"shepp-logan"}, + {"unit-pulse"}, }; const char* Phantom::s_aszPhantomTitle[] = { {"Herman Head"}, - {"Herman Head Bordered"}, - {"Rowland Head"}, - {"Rowland Head Bordered"}, + {"Shepp-Logan"}, {"Unit Pulse"}, }; @@ -80,7 +76,6 @@ Phantom::init () m_xmax = -1E30; m_ymin = 1E30; m_ymax = -1E30; - m_diameter = 0; m_composition = P_PELEMS; m_fail = false; m_id = PHM_INVALID; @@ -155,14 +150,8 @@ Phantom::createFromPhantom (const int phmid) case PHM_HERMAN: addStdHerman(); break; - case PHM_BHERMAN: - addStdHermanBordered(); - break; - case PHM_ROWLAND: - addStdRowland(); - break; - case PHM_BROWLAND: - addStdRowlandBordered (); + case PHM_SHEPP_LOGAN: + addStdSheppLogan(); break; case PHM_UNITPULSE: m_composition = P_UNIT_PULSE; @@ -196,36 +185,43 @@ Phantom::createFromPhantom (const int 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); } +bool +Phantom::fileWrite (const char* const fname) +{ + fstream file (fname, ios::out); + + if (! file.fail()) + printDefinitions (file); + return ! file.fail(); +} /* NAME * addPElem Add pelem @@ -252,11 +248,6 @@ Phantom::addPElem (const char *type, const double cx, const double cy, const dou if (m_ymin > pelem->ymin()) m_ymin = pelem->ymin(); if (m_ymax < pelem->ymax()) m_ymax = pelem->ymax(); - if (m_diameter < pelem->diameter()) - m_diameter = pelem->diameter(); - - // m_diameter = lineLength(m_xmin, m_ymin, m_xmax, m_ymax); - m_nPElem++; } @@ -274,23 +265,55 @@ Phantom::addPElem (const char *type, const double cx, const double cy, const dou */ void -Phantom::print () const +Phantom::print (std::ostream& os) const { - printf("PRINTING Phantom\n\n"); - printf("number of pelems in Phantom = %d\n", m_nPElem); - printf("limits: xmin=%8.2g ymin=%8.2g xmax=%8.2g ymax=%8.2g\n", - m_xmin, m_ymin, m_xmax, m_ymax); + os << "Number of PElements: " << m_nPElem << "\n"; + os << "Limits: xmin=" << m_xmin << ", ymin=" << m_ymin << ", xmax=" << m_xmax << ", ymax=" << m_ymax << "\n"; - for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) { - printf("PELEM:\n"); - printf("# pts=%3d atten = %7.4f rot = %7.2f (deg)\n", - (*i)->nOutlinePoints(), (*i)->atten(), convertRadiansToDegrees ((*i)->rot())); + for (PElemConstIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) { + const PhantomElement& rPE = **i; + os << "PhantomElement: nPoints=" << rPE.nOutlinePoints(); + os << ", atten=" << rPE.atten() << " rot=" << convertRadiansToDegrees (rPE.rot()) << "\n"; + os << "xmin=" << rPE.xmin() << ", ymin=" << rPE.ymin() << ", xmax=" << rPE.xmax() << ", ymax=" << rPE.ymax() << "\n"; - printf("xmin=%7.3g ymin=%7.3g xmax=%7.3g ymax=%7.3g\n", - (*i)->xmin(), (*i)->ymin(), (*i)->xmax(), (*i)->ymax()); + if (false) + for (int i = 0; i < rPE.nOutlinePoints(); i++) + os << rPE.xOutline()[i] << "," << rPE.yOutline()[i] << "\n"; + } +} +void +Phantom::print (std::ostringstream& os) const +{ + os << "Number of PElements: " << m_nPElem << "\n"; + os << "Limits: xmin=" << m_xmin << ", ymin=" << m_ymin << ", xmax=" << m_xmax << ", ymax=" << m_ymax << "\n"; + + for (PElemConstIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) { + const PhantomElement& rPE = **i; + os << "PhantomElement: nPoints=" << rPE.nOutlinePoints(); + os << ", atten=" << rPE.atten() << " rot=" << convertRadiansToDegrees (rPE.rot()) << "\n"; + os << "xmin=" << rPE.xmin() << ", ymin=" << rPE.ymin() << ", xmax=" << rPE.xmax() << ", ymax=" << rPE.ymax() << "\n"; - // for (int i = 0; i < m_nPoints; i++) - // printf("\t%8.3g %8.3g\n", i->xOutline()[i], i->yOutline()[i]); + if (false) + for (int i = 0; i < rPE.nOutlinePoints(); i++) + os << rPE.xOutline()[i] << "," << rPE.yOutline()[i] << "\n"; + } +} + +void +Phantom::printDefinitions (std::ostream& os) const +{ + for (PElemConstIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) { + const PhantomElement& rPE = **i; + rPE.printDefinition (os); + } +} + +void +Phantom::printDefinitions (std::ostringstream& os) const +{ + for (PElemConstIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) { + const PhantomElement& rPE = **i; + rPE.printDefinition (os); } } @@ -308,11 +331,29 @@ Phantom::show () const { SGPDriver driverSGP ("Phantom Show"); SGP sgp (driverSGP); - draw (sgp); - cout << "Press return to continue"; + show (sgp); + + std::cout << "Press return to continue"; cio_kb_getc(); } + +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; + + double xcent = m_xmin + (m_xmax - m_xmin) / 2; + double ycent = m_ymin + (m_ymax - m_ymin) / 2; + + sgp.setWindow (xcent - halfWindow, ycent - halfWindow, xcent + halfWindow, ycent + halfWindow); + + draw (sgp); +} #endif @@ -327,18 +368,6 @@ Phantom::show () const void Phantom::draw (SGP& sgp) const { - double wsize = m_xmax - m_xmin; - double xmin = m_xmin; - double ymin = m_ymin; - - if ((m_ymax - m_ymin) > wsize) - wsize = m_ymax - m_ymin; - wsize *= 1.1; - - double xmax = xmin + wsize; - double ymax = ymin + wsize; - - sgp.setWindow (xmin, ymin, xmax, ymax); for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) sgp.polylineAbs ((*i)->xOutline(), (*i)->yOutline(), (*i)->nOutlinePoints()); } @@ -346,7 +375,7 @@ Phantom::draw (SGP& sgp) const /* 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 @@ -355,7 +384,7 @@ Phantom::draw (SGP& sgp) const */ void -Phantom::addStdRowland () +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); @@ -370,12 +399,6 @@ Phantom::addStdRowland () addPElem ("ellipse", 0.5538, -0.3858, 0.0330, 0.2060, -18.0, 0.03); } -void -Phantom::addStdRowlandBordered () -{ - addStdRowland (); - addPElem ("ellipse", 0.000, 0.0000, 0.7500, 1.000, 0.0, 0.00); -} /* NAME * addStdHerman Standard head phantom of G. T. Herman @@ -405,12 +428,6 @@ Phantom::addStdHerman () addPElem ("ellipse", 0.000, 0.00, 7.875, 5.7187, 90.00, -0.206); } -void -Phantom::addStdHermanBordered () -{ - addStdHerman(); - addPElem ("ellipse", 0.000, 0.000, 8.650, 8.650, 0.00, 0.000); -} /* NAME @@ -425,13 +442,13 @@ Phantom::addStdHermanBordered () */ void -Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace) const +Phantom::convertToImagefile (ImageFile& im, double dViewRatio, const int in_nsample, const int trace) const { - convertToImagefile (im, in_nsample, trace, 0, im.nx()); + convertToImagefile (im, dViewRatio, 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 double dViewRatio, const int in_nsample, const int trace, const int colStart, const int colCount, bool bStoreAtColumnPos) const { int nx = im.nx(); int ny = im.ny(); @@ -446,14 +463,12 @@ Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trac double dy = m_ymax - m_ymin; double xcent = m_xmin + dx / 2; double ycent = m_ymin + dy / 2; - double phmlen = (dx > dy ? dx : dy); - - double phmradius = phmlen / 2; + double dHalflen = dViewRatio * (getDiameterBoundaryCircle() / SQRT2 / 2); - double xmin = xcent - phmradius; - double xmax = xcent + phmradius; - double ymin = ycent - phmradius; - double ymax = ycent + phmradius; + double xmin = xcent - dHalflen; + double xmax = xcent + dHalflen; + double ymin = ycent - dHalflen; + double ymax = ycent + dHalflen; // Each pixel holds the average of the intensity of the cell with (ix,iy) at the center of the pixel // Set major increments so that the last cell v[nx-1][ny-1] will start at xmax - xinc, ymax - yinc). @@ -473,8 +488,12 @@ 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++) { @@ -482,11 +501,14 @@ 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 */ @@ -494,11 +516,16 @@ Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trac if (nsample > 1) { - double factor = 1.0 / (nsample * nsample); + double factor = 1.0 / static_cast(nsample * nsample); + - for (int ix = 0; ix < colCount; ix++) - for (int iy = 0; iy < ny; iy++) - v[ix][iy] *= factor; + 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; + } } } @@ -522,26 +549,32 @@ PhantomElement::PhantomElement (const char *type, const double cx, const double makeTransformMatrices (); // calc transform matrices between phantom and normalized phantomelement makeVectorOutline (); // calculate vector outline of pelem - // Find maximum diameter of Object - double r2Max = 0; - for (int i = 0; i < m_nPoints; i++) { - double r2 = (m_xOutline[i] * m_xOutline[i]) + (m_yOutline[i] * m_yOutline[i]); - if (r2 > r2Max) - r2Max = r2; - } - m_diameter = 2 * sqrt( r2Max ); - m_rectLimits[0] = m_xmin; m_rectLimits[1] = m_ymin; m_rectLimits[2] = m_xmax; m_rectLimits[3] = m_ymax; } + PhantomElement::~PhantomElement () { delete m_xOutline; delete m_yOutline; } +void +PhantomElement::printDefinition (std::ostream& os) const +{ + os << convertTypeToName (m_type) << " " << m_cx << " " << m_cy << " " << m_u << " " + << m_v << " " << convertRadiansToDegrees (m_rot) << " " << m_atten << "\n"; +} + +void +PhantomElement::printDefinition (std::ostringstream& os) const +{ + os << convertTypeToName (m_type) << " " << m_cx << " " << m_cy << " " << m_u << " " + << m_v << " " << convertRadiansToDegrees (m_rot) << " " << m_atten << "\n"; +} + PhmElemType PhantomElement::convertNameToType (const char* const typeName) { @@ -563,6 +596,26 @@ PhantomElement::convertNameToType (const char* const typeName) return (type); } +const char* const +PhantomElement::convertTypeToName (PhmElemType iType) +{ + static char* pszType = "Unknown"; + + if (iType == PELEM_RECTANGLE) + pszType = "rectangle"; + else if (iType == PELEM_TRIANGLE) + pszType = "triangle"; + else if (iType == PELEM_ELLIPSE) + pszType = "ellipse"; + else if (iType == PELEM_SECTOR) + pszType = "sector"; + else if (iType == PELEM_SEGMENT) + pszType = "segment"; + + return pszType; +} + + void PhantomElement::makeTransformMatrices () {