** This is part of the CTSim program
** Copyright (c) 1983-2001 Kevin Rosenberg
**
-** $Id: projections.h,v 1.21 2001/01/28 19:10:18 kevin Exp $
+** $Id: projections.h,v 1.32 2001/03/13 04:44:25 kevin Exp $
**
**
** This program is free software; you can redistribute it and/or modify
#include "array2dfile.h"
#include "imagefile.h"
#include <complex>
+#include <vector>
+
+
+//used for rebinning divergent beam projections to parallel
+class ParallelRaysumCoordinate {
+public:
+ double m_dT; // Distance from center of origin
+ double m_dTheta; // perpendicular angle to origin
+ double m_dRaysum;
+
+ static bool compareByTheta (ParallelRaysumCoordinate* a, ParallelRaysumCoordinate* b)
+ { return a->m_dTheta == b->m_dTheta ? b->m_dT > a->m_dT : b->m_dTheta > a->m_dTheta; }
+
+ // sort first by T, then Theta
+ static bool compareByT (ParallelRaysumCoordinate* a, ParallelRaysumCoordinate* b)
+ { return a->m_dT == b->m_dT ? b->m_dTheta > a->m_dTheta : b->m_dT > a->m_dT; }
+
+};
+
+class ParallelRaysums {
+public:
+
+ enum {
+ THETA_RANGE_UNCONSTRAINED = 0,
+ THETA_RANGE_NORMALIZE_TO_TWOPI,
+ THETA_RANGE_FOLD_TO_PI,
+ };
+
+ ParallelRaysums (Projections* pProjections, int iThetaRange);
+ ~ParallelRaysums ();
+
+ typedef std::vector<ParallelRaysumCoordinate*> CoordinateContainer;
+ typedef CoordinateContainer::iterator CoordinateIterator;
+
+ CoordinateContainer& getCoordinates() {return m_vecpCoordinates;}
+ int getNumCoordinates() const {return m_iNumCoordinates;}
+ void getLimits (double* dMinT, double* dMaxT, double* dMinTheta, double* dMaxTheta) const;
+ CoordinateContainer& getSortedByT();
+ CoordinateContainer& getSortedByTheta();
+ double interpolate (double* pdX, double* pdY, int n, double dXValue, int* iLastFloor = NULL);
+ void getThetaAndRaysumsForT (int iT, double* pdTheta, double* pdRaysum);
+ void getDetPositions (double* pdDetPos);
+
+private:
+ CoordinateContainer m_vecpCoordinates;
+ CoordinateContainer m_vecpSortedByT;
+ CoordinateContainer m_vecpSortedByTheta;
+ int m_iNumCoordinates;
+ int m_iNumView;
+ int m_iNumDet;
+ int m_iThetaRange;
+};
+
+
// Projections
class Projections
~Projections ();
static const int getInterpCount() {return s_iInterpCount;}
- static const char** getInterpNameArray() {return s_aszInterpName;}
- static const char** getInterpTitleArray() {return s_aszInterpTitle;}
+ static const char* const* getInterpNameArray() {return s_aszInterpName;}
+ static const char* const* getInterpTitleArray() {return s_aszInterpTitle;}
static int convertInterpNameToID (const char* const interpName);
static const char* convertInterpIDToName (const int interpID);
static const char* convertInterpIDToTitle (const int interpID);
void initFromScanner (const Scanner& scanner);
+ bool initFromSomatomAR_STAR (int iNViews, int iNDets, unsigned char* pData, unsigned long lDataLength);
void printProjectionData (int startView, int endView);
void printProjectionData ();
bool detarrayRead (fnetorderstream& fs, DetectorArray& darray, const int view_num);
bool detarrayWrite (fnetorderstream& fs, const DetectorArray& darray, const int view_num);
+ Projections* interpolateToParallel();
+
bool convertPolar (ImageFile& rIF, int iInterpolation);
bool convertFFTPolar (ImageFile& rIF, int iInterpolation, int iZeropad);
- void calcArrayPolarCoordinates (unsigned int nx, unsigned int ny, double** ppdView, double** ppdDet);
+ bool calcArrayPolarCoordinates (unsigned int nx, unsigned int ny, double** ppdView, double** ppdDet);
void interpolatePolar (ImageFileArray& v, ImageFileArray& vImag, unsigned int nx, unsigned int ny, std::complex<double>** ppcDetValue,
double** ppdDet, double** ppdView, unsigned int nView, unsigned int nDet, int iInterpolate);
void setNView (int nView); // used in MPI to restrict # of views
void setRotInc (double rotInc) { m_rotInc = rotInc;}
void setDetInc (double detInc) { m_detInc = detInc;}
- void setPhmLen (double phmLen) { m_phmLen = phmLen;}
void setCalcTime (double calcTime) {m_calcTime = calcTime;}
void setRemark (const char* remark) {m_remark = remark; m_label.setLabelString(remark);}
void setRemark (const std::string& remark) {setRemark(remark.c_str());}
double detStart() const {return m_detStart;}
double rotStart() const {return m_rotStart;}
double calcTime() const {return m_calcTime;}
- double phmLen() const {return m_phmLen;}
+ double viewLen() const {return m_dViewDiameter / SQRT2;}
const char* remark() const {return m_remark.c_str();}
double detInc() const {return m_detInc;}
double rotInc() const {return m_rotInc;}
int nDet() const {return m_nDet;}
int nView() const {return m_nView;}
int geometry() const {return m_geometry;}
- double focalLength() const {return m_focalLength;}
- double fieldOfView() const {return m_fieldOfView;}
+ double focalLength() const {return m_dFocalLength;}
+ double sourceDetectorLength() const { return m_dSourceDetectorLength;}
+ double viewDiameter() const {return m_dViewDiameter; }
+ double phmLen() const { return m_dViewDiameter / SQRT2; }
+ void setPhmLen(double phmLen) { m_dViewDiameter = phmLen * SQRT2; }
const std::string& getFilename() const {return m_filename;}
Array2dFileLabel& getLabel() {return m_label;}
double m_rotInc; // angle between rotations
double m_detStart; // distance of beginning detector to center phantom
double m_detInc; // increment between detectors
- double m_phmLen; // Length of phantom edge (phm is square)
- double m_focalLength;
- double m_fieldOfView;
+ double m_dFocalLength;
+ double m_dSourceDetectorLength;
+ double m_dViewDiameter;
+ double m_dFanBeamAngle;
kuint32 m_year; // Creation date & time
kuint32 m_month;
kuint32 m_day;
const static kuint16 m_signature;
- static const char* s_aszInterpName[];
- static const char* s_aszInterpTitle[];
+ static const char* const s_aszInterpName[];
+ static const char* const s_aszInterpTitle[];
static const int s_iInterpCount;
bool headerWrite (fnetorderstream& fs);