** Date Started: July 1, 1984
**
** This is part of the CTSim program
-** Copyright (C) 1983-2000 Kevin Rosenberg
+** Copyright (c) 1983-2001 Kevin Rosenberg
**
-** $Id: projections.h,v 1.19 2001/01/03 22:00:46 kevin Exp $
+** $Id$
**
**
** This program is free software; you can redistribute it and/or modify
class Scanner;
class DetectorArray;
class Array2dFileLabel;
+class fnetorderstream;
+
+#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 (const 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;
+ ParallelRaysumCoordinate* m_pCoordinates;
+ int m_iNumCoordinates;
+ int m_iNumView;
+ int m_iNumDet;
+ int m_iThetaRange;
+};
+
// Projections
class Projections
{
public:
+
+ static const int POLAR_INTERP_INVALID;
+ static const int POLAR_INTERP_NEAREST;
+ static const int POLAR_INTERP_BILINEAR;
+ static const int POLAR_INTERP_BICUBIC;
+
Projections (const int nView, const int nDet);
Projections (const Scanner& scanner);
Projections ();
~Projections ();
+ static const int getInterpCount() {return s_iInterpCount;}
+ 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 ();
void printScanInfo (std::ostringstream& os) const;
+ int Helical180LI(int interpView);
+ int Helical180LI_Equiangular(int interpView);
+ int HalfScanFeather(void);
+
bool read (const std::string& fname);
bool read (const char* fname);
bool write (const char* fname);
bool detarrayRead (fnetorderstream& fs, DetectorArray& darray, const int view_num);
bool detarrayWrite (fnetorderstream& fs, const DetectorArray& darray, const int view_num);
+ Projections* interpolateToParallel() const;
+
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,
+ int iNumDetWithZeros, double dZeropadRatio, double dDetInc);
+ 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, unsigned int nDetWithZeros,
+ int iInterpolate);
bool reconstruct (ImageFile& im, const char* const filterName, double filt_param, const char* const filterMethodName, const int zeropad, const char* frequencyFilterName, const char* const interpName, int interp_param, const char* const backprojName, const int trace) const;
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* const s_aszInterpName[];
+ static const char* const s_aszInterpTitle[];
+ static const int s_iInterpCount;
+
bool headerWrite (fnetorderstream& fs);
bool headerRead (fnetorderstream& fs);
void newProjData ();
projects / ctsim.git / blobdiff