** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: phantom.cpp,v 1.2 2000/06/19 19:54:23 kevin Exp $
+** $Id: phantom.cpp,v 1.22 2000/12/16 06:12:47 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
#include "ct.h"
+const int PhantomElement::POINTS_PER_CIRCLE = 360;\r
+const double PhantomElement::SCALE_PELEM_EXTENT=0.005; // increase pelem limits by 0.5% \r
+
+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 ();
+}
+
+
+Phantom::Phantom (const char* const phmName)
+{
+ init ();
+ createFromPhantom (phmName);
+}
+
+void
+Phantom::init ()
{
m_nPElem = 0;
m_xmin = 1E30;
m_ymax = -1E30;
m_diameter = 0;
m_composition = P_PELEMS;
+ m_fail = false;
+ m_id = PHM_INVALID;
}
-
-Phantom::~Phantom (void)
+Phantom::~Phantom ()
{
for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) {
delete *i;
}
-void
-Phantom::create (const int phmid)
+const char*
+Phantom::convertPhantomIDToName (int phmID)
+{
+ static const char *name = "";
+
+ 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);
+}
+
+int
+Phantom::convertNameToPhantomID (const char* const phmName)
+{
+ int id = PHM_INVALID;
+
+ for (int i = 0; i < s_iPhantomCount; i++)
+ if (strcasecmp (phmName, s_aszPhantomName[i]) == 0) {
+ id = i;
+ break;
+ }
+
+ return (id);
+}
+
+
+bool
+Phantom::createFromPhantom (const char* const phmName)
+{
+ int phmid = convertNameToPhantomID (phmName);
+ if (phmid == PHM_INVALID) {
+ m_fail = true;
+ m_failMessage = "Invalid phantom name ";
+ m_failMessage += phmName;
+ return false;
+ }
+
+ m_name = phmName;
+ createFromPhantom (phmid);
+ return true;
+}
+
+bool
+Phantom::createFromPhantom (const int phmid)
{
switch (phmid)
{
- case O_PHM_HERMAN:
- std_herman();
+ case PHM_HERMAN:
+ addStdHerman();
break;
- case O_PHM_ROWLAND:
- std_rowland();
+ case PHM_B_HERMAN:
+ addStdHermanBordered();
break;
- case O_PHM_BROWLAND:
- std_rowland_bordered ();
+ case PHM_SHEPP_LOGAN:
+ addStdSheppLogan();
break;
- case O_PHM_UNITPULSE:
+ case PHM_B_SHEPP_LOGAN:
+ addStdSheppLoganBordered();
+ break;
+ case PHM_UNITPULSE:
m_composition = P_UNIT_PULSE;
addPElem ("rectangle", 0., 0., 100., 100., 0., 0.); // outline
addPElem ("ellipse", 0., 0., 1., 1., 0., 1.); // pulse
break;
default:
- sys_error (ERR_WARNING, "Illegal phantom id %d\n", phmid);
- break;
+ m_fail = true;
+ m_failMessage = "Illegal phantom id ";
+ m_failMessage += phmid;
+ return false;
}
+
+ m_id = phmid;
+
+ return true;
}
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<int>(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);
}
*/
void
-Phantom::print (void) const
+Phantom::print () const
{
printf("PRINTING Phantom\n\n");
printf("number of pelems in Phantom = %d\n", m_nPElem);
#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();
+}
+
+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;
- gid = sgp2_init(0, 0, "Phantom Show");
- sgp2_window (xmin, ymin, xmax, ymax);
+ double xcent = m_xmin + (m_xmax - m_xmin) / 2;
+ double ycent = m_ymin + (m_ymax - m_ymin) / 2;
- draw();
+ sgp.setWindow (xcent - halfWindow, ycent - halfWindow, xcent + halfWindow, ycent + halfWindow);
- termgrf2();
+ draw (sgp);
}
#endif
#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
- * std_rowland Make head phantom of S.W. Rowland
- *
- * SYNOPSIS
- * std_rowland ()
+ * addStdSheppLogan Make head phantom of Shepp-Logan
*
* REFERENCES
* S. W. Rowland, "Computer Implementation of Image Reconstruction
*/
void
-Phantom::std_rowland (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);
- addPElem("ellipse", 0.2200, 0.0000, 0.1100, 0.3100, -18.0, -0.02);
- addPElem("ellipse", -0.2200, 0.0000, 0.1600, 0.4100, 18.0, -0.02);
- addPElem("ellipse", 0.0000, 0.3500, 0.2100, 0.2500, 0.0, 0.01);
- addPElem("ellipse", 0.0000, 0.1000, 0.0460, 0.0460, 0.0, 0.01);
- addPElem("ellipse", 0.0000, -0.1000, 0.0460, 0.0460, 0.0, 0.01);
- addPElem("ellipse", -0.0800, -0.6050, 0.0460, 0.0230, 0.0, 0.01);
- addPElem("ellipse", 0.0000, -0.6050, 0.0230, 0.0230, 0.0, 0.01);
- addPElem("ellipse", 0.0600, -0.6050, 0.0230, 0.0230, 0.0, 0.01);
- addPElem("ellipse", 0.5538, -0.3858, 0.0330, 0.2060, -18.0, 0.03);
+ 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);
+ addPElem ("ellipse", 0.2200, 0.0000, 0.1100, 0.3100, -18.0, -0.02);
+ addPElem ("ellipse", -0.2200, 0.0000, 0.1600, 0.4100, 18.0, -0.02);
+ addPElem ("ellipse", 0.0000, 0.3500, 0.2100, 0.2500, 0.0, 0.01);
+ addPElem ("ellipse", 0.0000, 0.1000, 0.0460, 0.0460, 0.0, 0.01);
+ addPElem ("ellipse", 0.0000, -0.1000, 0.0460, 0.0460, 0.0, 0.01);
+ addPElem ("ellipse", -0.0800, -0.6050, 0.0460, 0.0230, 0.0, 0.01);
+ addPElem ("ellipse", 0.0000, -0.6050, 0.0230, 0.0230, 0.0, 0.01);
+ addPElem ("ellipse", 0.0600, -0.6050, 0.0230, 0.0230, 0.0, 0.01);
+ addPElem ("ellipse", 0.5538, -0.3858, 0.0330, 0.2060, -18.0, 0.03);
}
void
-Phantom::std_rowland_bordered (void)
+Phantom::addStdSheppLoganBordered ()
{
- std_rowland ();
- 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
- * std_herman Standard head phantom of G. T. Herman
- *
- * SYNOPSIS
- * std_herman ()
+ * addStdHerman Standard head phantom of G. T. Herman
*
* REFERENCES
* G. T. Herman, "Image Reconstructions from Projections: The Fundementals
*/
void
-Phantom::std_herman (void)
-{
- 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);
- addPElem("ellipse", 0.750, 1.50, 0.375, 0.2250, 50.00, 0.003);
- addPElem("segment", 1.375, -7.50, 1.100, 0.6250, 19.20, -0.204);
- addPElem("segment", 1.375, -7.50, 1.100, 4.3200, 19.21, 0.204);
- addPElem("segment", 0.000, -2.25, 1.125, 0.3750, 0.00, -0.003);
- addPElem("segment", 0.000, -2.25, 1.125, 3.0000, 0.00, 0.003);
- addPElem("segment", -1.000, 3.75, 1.000, 0.5000, 135.00, -0.003);
- addPElem("segment", -1.000, 3.75, 1.000, 3.0000, 135.00, 0.003);
- addPElem("segment", 1.000, 3.75, 1.000, 0.5000, 225.00, -0.003);
- addPElem("segment", 1.000, 3.75, 1.000, 3.0000, 225.00, 0.003);
- addPElem("triangle", 5.025, 3.75, 1.125, 0.5000, 110.75, 0.206);
- addPElem("triangle",-5.025, 3.75, 1.125, 0.9000,-110.75, 0.206);
- addPElem("ellipse", 0.000, 0.00, 8.625, 6.4687, 90.00, 0.416);
- addPElem("ellipse", 0.000, 0.00, 7.875, 5.7187, 90.00, -0.206);
+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);
+ addPElem ("ellipse", 0.750, 1.50, 0.375, 0.2250, 50.00, 0.003);
+ addPElem ("segment", 1.375, -7.50, 1.100, 0.6250, 19.20, -0.204);
+ addPElem ("segment", 1.375, -7.50, 1.100, 4.3200, 19.21, 0.204);
+ addPElem ("segment", 0.000, -2.25, 1.125, 0.3750, 0.00, -0.003);
+ addPElem ("segment", 0.000, -2.25, 1.125, 3.0000, 0.00, 0.003);
+ addPElem ("segment", -1.000, 3.75, 1.000, 0.5000, 135.00, -0.003);
+ addPElem ("segment", -1.000, 3.75, 1.000, 3.0000, 135.00, 0.003);
+ addPElem ("segment", 1.000, 3.75, 1.000, 0.5000, 225.00, -0.003);
+ addPElem ("segment", 1.000, 3.75, 1.000, 3.0000, 225.00, 0.003);
+ addPElem ("triangle", 5.025, 3.75, 1.125, 0.5000, 110.75, 0.206);
+ addPElem ("triangle",-5.025, 3.75, 1.125, 0.9000,-110.75, 0.206);
+ addPElem ("ellipse", 0.000, 0.00, 8.625, 6.4687, 90.00, 0.416);
+ addPElem ("ellipse", 0.000, 0.00, 7.875, 5.7187, 90.00, -0.206);
+}
+
+void
+Phantom::addStdHermanBordered ()
+{
+ addStdHerman();
+ addPElem ("rectangle", 0.000, 0.00, 10.780, 8.110, 90.00, 0.000);
}
* (total samples per pixel = nsample * nsample)
*/
+void
+Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace) const
+{
+ convertToImagefile (im, in_nsample, trace, 0, im.nx(), true);
+}
+
void
-Phantom::convertToImagefile (ImageFile& im, const int colStart, const int colCount, const int in_nsample, const int trace) 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();
if (nx < 2 || ny < 2)
return;
+ int nsample = in_nsample;
if (nsample < 1)
- nsample = 1;
+ nsample = 1;
- int nsample = in_nsample;
double dx = m_xmax - m_xmin;
double dy = m_ymax - m_ymin;
double xcent = m_xmin + dx / 2;
ImageFileArray v = im.getArray();
+ for (int ix = 0; ix < colCount; ix++)
+ 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++) {
- 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 ((*pelem)->isPointInside (xi, yi, PHM_COORD) == TRUE)
- v[ix][iy] += (*pelem)->atten();
- } // for kx
- } /* for iy */
- } /* for ix */
+ for (PElemConstIterator pelem = m_listPElem.begin(); pelem != m_listPElem.end(); pelem++) {
+ const PhantomElement& rPElem = **pelem;
+ double x, y, xi, yi;
+ int ix, iy, kx, ky;
+ for (ix = 0, x = x_start; ix < colCount; ix++, x += xinc) {
+ 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 */
} /* for pelem */
{
m_rot = convertDegreesToRadians (rot); // convert angle to radians
- if (strcasecmp (type, "rectangle") == 0)
- m_type = PELEM_RECTANGLE;
- else if (strcasecmp (type, "triangle") == 0)
- m_type = PELEM_TRIANGLE;
- else if (strcasecmp (type, "ellipse") == 0)
- m_type = PELEM_ELLIPSE;
- else if (strcasecmp (type, "sector") == 0)
- m_type = PELEM_SECTOR;
- else if (strcasecmp (type, "segment") == 0)
- m_type = PELEM_SEGMENT;
- else {
- sys_error (ERR_WARNING, "Unknown PhantomElement type %s [PhantomElement::PhantomElement]", type);
- m_type = PELEM_INVALID;
- }
+ m_type = convertNameToType (type);
makeTransformMatrices (); // calc transform matrices between phantom and normalized phantomelement
makeVectorOutline (); // calculate vector outline of pelem
}
-PhantomElement::~PhantomElement (void)
+PhantomElement::~PhantomElement ()
{
delete m_xOutline;
delete m_yOutline;
}
+PhmElemType
+PhantomElement::convertNameToType (const char* const typeName)
+{
+ PhmElemType type = PELEM_INVALID;
+
+ if (strcasecmp (typeName, "rectangle") == 0)
+ type = PELEM_RECTANGLE;
+ else if (strcasecmp (typeName, "triangle") == 0)
+ type = PELEM_TRIANGLE;
+ else if (strcasecmp (typeName, "ellipse") == 0)
+ type = PELEM_ELLIPSE;
+ else if (strcasecmp (typeName, "sector") == 0)
+ type = PELEM_SECTOR;
+ else if (strcasecmp (typeName, "segment") == 0)
+ type = PELEM_SEGMENT;
+ else
+ sys_error (ERR_WARNING, "Unknown PhantomElement type %s [PhantomElement::PhantomElement]", type);
+
+ return (type);
+}
+
void
-PhantomElement::makeTransformMatrices (void)
+PhantomElement::makeTransformMatrices ()
{
GRFMTX_2D temp;
* Called by phm_add_pelem()
*/
-static const double SCALE_PELEM_EXTENT=0.005; // increase pelem limits by 0.5%
-
void
-PhantomElement::makeVectorOutline (void)
+PhantomElement::makeVectorOutline ()
{
double radius, theta, start, stop;
double xfact, yfact;
}
-
/* NAME
* calc_arc Calculate outline of a arc of a circle
*
*/
int
-PhantomElement::numCirclePoints (double theta) const
+PhantomElement::numCirclePoints (double theta)
{
- if (theta < 0.0 || theta > TWOPI)
- sys_error(ERR_WARNING, "illegal values sent to circle_pts");
+ theta = clamp (theta, 0., TWOPI);
return static_cast<int> (POINTS_PER_CIRCLE * theta / TWOPI + 1.5);
}
// false if point lies outside of pelem
bool
-PhantomElement::isPointInside (double x, double y, const CoordType coord_type)
+PhantomElement::isPointInside (double x, double y, const CoordType coord_type) const
{
if (coord_type == PHM_COORD) {
xform_mtx2 (m_xformPhmToObj, x, y);