X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fphantom.cpp;h=9125e36be718af7ea36959b42bf5461cd673f0ab;hp=ccf728a11d503c34c9ea1d507461c60efd1d78dd;hb=f7d2b7144f32a7bd157b7689022e62944b82fcc1;hpb=980bef9b95bef1ab728634181a5672088fd47066 diff --git a/libctsim/phantom.cpp b/libctsim/phantom.cpp index ccf728a..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 1.14 2000/07/31 14:48:35 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 @@ -27,29 +27,31 @@ #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_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"}, - {"bherman"}, - {"rowland"}, - {"browland"}, + {"herman-b"}, + {"shepp-logan"}, + {"shepp-logan-b"}, {"unitpulse"}, }; const char* Phantom::s_aszPhantomTitle[] = { {"Herman Head"}, - {"Herman Head Bordered"}, - {"Rowland Head"}, - {"Rowland Head Bordered"}, + {"Herman Head (Bordered)"}, + {"Shepp-Logan"}, + {"Shepp-Logan (Bordered)"}, {"Unit Pulse"}, }; @@ -155,14 +157,14 @@ Phantom::createFromPhantom (const int 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; @@ -196,34 +198,32 @@ 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); } @@ -311,7 +311,7 @@ Phantom::show () const show (sgp); - cout << "Press return to continue"; + std::cout << "Press return to continue"; cio_kb_getc(); } @@ -352,7 +352,7 @@ 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 @@ -361,7 +361,7 @@ 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); @@ -377,10 +377,10 @@ Phantom::addStdRowland () } void -Phantom::addStdRowlandBordered () +Phantom::addStdSheppLoganBordered () { - addStdRowland (); - addPElem ("rectangle", 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 @@ -415,7 +415,7 @@ void Phantom::addStdHermanBordered () { addStdHerman(); - addPElem ("rectangle", 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); } @@ -433,11 +433,11 @@ Phantom::addStdHermanBordered () 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(); @@ -479,8 +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++) { @@ -488,11 +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 */ @@ -500,11 +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; + } } }