/*****************************************************************************
** FILE IDENTIFICATION
**
-** Name: backproject.h
+** Name: backproject.h
** Purpose: Backprojection classes
-** Programmer: Kevin Rosenberg
-** Date Started: June 2000
+** Programmer: Kevin Rosenberg
+** Date Started: June 2000
**
** This is part of the CTSim program
-** Copyright (C) 1983-2000 Kevin Rosenberg
-**
-** $Id: backprojectors.h,v 1.12 2000/07/22 15:45:33 kevin Exp $
+** Copyright (c) 1983-2009 Kevin Rosenberg
**
** 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
class Backproject;
class ImageFile;
class Projections;
+struct ReconstructionROI;
class Backprojector
{
static const int BPROJ_TRIG;
static const int BPROJ_TABLE;
static const int BPROJ_DIFF;
- static const int BPROJ_DIFF2;
- static const int BPROJ_IDIFF2;
- static const int BPROJ_IDIFF3;
+ static const int BPROJ_IDIFF;
static const int INTERP_INVALID;
static const int INTERP_NEAREST;
static const int INTERP_LINEAR;
+ static const int INTERP_CUBIC;
static const int INTERP_FREQ_PREINTERPOLATION;
#if HAVE_BSPLINE_INTERP
static const int INTERP_BSPLINE;
static const int INTERP_3BSPLINE;
#endif
- Backprojector (const Projections& proj, ImageFile& im, const char* const backprojName, const char* const interpName, const int interpFactor);
+ Backprojector (const Projections& proj, ImageFile& im, const char* const backprojName,
+ const char* const interpName, const int interpFactor, const ReconstructionROI* pROI);
~Backprojector ();
-
+
void BackprojectView (const double* const viewData, const double viewAngle);
+ void PostProcessing();
bool fail() const {return m_fail;}
- const string& failMessage() const {return m_failMessage;}
+ const std::string& failMessage() const {return m_failMessage;}
static const int getBackprojectCount() {return s_iBackprojectCount;}
- static const char** getBackprojectNameArray() {return s_aszBackprojectName;}
- static const char** getBackprojectTitleArray() {return s_aszBackprojectTitle;}
+ static const char* const* getBackprojectNameArray() {return s_aszBackprojectName;}
+ static const char* const* getBackprojectTitleArray() {return s_aszBackprojectTitle;}
static int convertBackprojectNameToID (const char* const bprojName);
static const char* convertBackprojectIDToName (const int bprojID);
static const char* convertBackprojectIDToTitle (const int bprojID);
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);
private:
- string m_nameBackproject;
- string m_nameInterpolation;
+ std::string m_nameBackproject;
+ std::string m_nameInterpolation;
int m_idBackproject;
int m_idInterpolation;
Backproject* m_pBackprojectImplem;
bool m_fail;
- string m_failMessage;
+ std::string m_failMessage;
- static const char* s_aszBackprojectName[];
- static const char* s_aszBackprojectTitle[];
+ static const char* const s_aszBackprojectName[];
+ static const char* const s_aszBackprojectTitle[];
static const int s_iBackprojectCount;
- 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 initBackprojector (const Projections& proj, ImageFile& im, const char* const backprojName, const char* const interpName, const int interpFactor);
+ bool initBackprojector (const Projections& proj, ImageFile& im, const char* const backprojName,
+ const char* const interpName, const int interpFactor, const ReconstructionROI* pROI);
};
class Backproject
{
public:
- Backproject (const Projections& proj, ImageFile& im, int interpID, const int interpFactor);
+ Backproject (const Projections& proj, ImageFile& im, int interpID, const int interpFactor,
+ const ReconstructionROI* pROI);
virtual ~Backproject ();
- virtual void BackprojectView (const double* const viewData, const double viewAngle) {};
+ virtual void BackprojectView (const double* const viewData, const double viewAngle) = 0;
+ virtual void PostProcessing (); // call after backprojecting all views
protected:
void ScaleImageByRotIncrement ();
- void Backproject::errorIndexOutsideDetector (int ix, int iy, double theta, double r, double phi, double L, int ni);
- void Backproject::errorIndexOutsideDetector (int ix, int iy, double theta, double L, int ni);
-
+ void errorIndexOutsideDetector (int ix, int iy, double theta, double r, double phi, double L, int ni);
+ void errorIndexOutsideDetector (int ix, int iy, double theta, double L, int ni);
const Projections& proj;
ImageFile& im;
int interpType;
kint32 nx;
kint32 ny;
double detInc;
- double rotInc;
- int iDetCenter; // index refering to L=0 projection
+ double rotScale;
+ int iDetCenter; // index refering to L=0 projection
int nDet;
double xMin, xMax, yMin, yMax; // Retangular coords of phantom
- double xInc, yInc; // size of cells
+ double xInc, yInc; // size of cells
int m_interpFactor;
+ double m_dFocalLength;
+ double m_dSourceDetectorLength;
+ bool m_bPostProcessingDone;
private:
Backproject (const Backproject& rhs);
class BackprojectTrig : public Backproject
{
public:
- BackprojectTrig (const Projections& proj, ImageFile& im, int interpID, const int interpFactor)
- : Backproject::Backproject (proj, im, interpType, interpFactor)
+ BackprojectTrig (const Projections& proj, ImageFile& im, int interpID, const int interpFactor, const ReconstructionROI* pROI)
+ : Backproject (proj, im, interpID, interpFactor, pROI)
{}
- void BackprojectView (const double* const t, double view_angle);
+ void BackprojectView (const double* const t, const double view_angle);
};
class BackprojectTable : public Backproject
{
public:
- BackprojectTable (const Projections& proj, ImageFile& im, int interpID, const int interpFactor);
- ~BackprojectTable ();
+ BackprojectTable (const Projections& proj, ImageFile& im, int interpID, const int interpFactor, const ReconstructionROI* pROI);
+ virtual ~BackprojectTable ();
- void BackprojectView (const double* const t, double view_angle);
+ virtual void BackprojectView (const double* const t, const double view_angle);
+ virtual void PostProcessing (); // call after backprojecting all views
- private:
+ protected:
Array2d<kfloat64> arrayR;
Array2d<kfloat64> arrayPhi;
kfloat64** r;
class BackprojectDiff : public Backproject
{
public:
- BackprojectDiff (const Projections& proj, ImageFile& im, int interpID, const int interpFactor);
+ BackprojectDiff (const Projections& proj, ImageFile& im, int interpID, const int interpFactor, const ReconstructionROI* pROI);
~BackprojectDiff ();
- void BackprojectView (const double* const t, double view_angle);
+ virtual void BackprojectView (const double* const t, const double view_angle);
+ virtual void PostProcessing (); // call after backprojecting all views
protected:
double start_r;
double im_xinc, im_yinc;
};
-class BackprojectDiff2 : public BackprojectDiff
+
+class BackprojectIntDiff : public BackprojectDiff
{
public:
- BackprojectDiff2 (const Projections& proj, ImageFile& im, int interpID, const int interpFactor)
- : BackprojectDiff::BackprojectDiff (proj, im, interpType, interpFactor)
+ BackprojectIntDiff (const Projections& proj, ImageFile& im, int interpID, const int interpFactor, const ReconstructionROI* pROI)
+ : BackprojectDiff (proj, im, interpID, interpFactor, pROI)
{}
- void BackprojectView (const double* const t, double view_angle);
+ void BackprojectView (const double* const t, const double view_angle);
};
-class BackprojectIntDiff2 : public BackprojectDiff
+class BackprojectEquilinear : public BackprojectTable
{
public:
- BackprojectIntDiff2 (const Projections& proj, ImageFile& im, int interpID, const int interpFactor)
- : BackprojectDiff::BackprojectDiff (proj, im, interpType, interpFactor)
- {}
-
- void BackprojectView (const double* const t, double view_angle);
-};
+ BackprojectEquilinear (const Projections& proj, ImageFile& im, int interpID, const int interpFactor, const ReconstructionROI* pROI)
+ : BackprojectTable (proj, im, interpID, interpFactor, pROI)
+ {}
+ void BackprojectView (const double* const t, const double view_angle);
-class BackprojectIntDiff3 : public BackprojectDiff
+ virtual ~BackprojectEquilinear()
+ {}
+};
+
+class BackprojectEquiangular : public BackprojectTable
{
public:
- BackprojectIntDiff3 (const Projections& proj, ImageFile& im, int interpType, const int interpFactor)
- : BackprojectDiff::BackprojectDiff (proj, im, interpType, interpFactor)
- {}
-
- void BackprojectView (const double* const t, double view_angle);
+ BackprojectEquiangular (const Projections& proj, ImageFile& im, int interpID, const int interpFactor, const ReconstructionROI* pROI)
+ : BackprojectTable (proj, im, interpID, interpFactor, pROI)
+ {}
+
+ void BackprojectView (const double* const t, const double view_angle);
+
+ virtual ~BackprojectEquiangular()
+ {}
};