X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=include%2Fprojections.h;h=38aea33307f716cff873a16961a4130c496602c2;hp=c55b44c89f6c46ff8bf0470d8be875c47e5c5cc6;hb=8a7697ce57b56cdc43698cd1241ad98d49f9b5ac;hpb=c953cbb6ffc2fd50e736230f4e6976a025983cff

diff --git a/include/projections.h b/include/projections.h
index c55b44c..38aea33 100644
--- a/include/projections.h
+++ b/include/projections.h
@@ -9,7 +9,7 @@
 **  This is part of the CTSim program
 **  Copyright (c) 1983-2001 Kevin Rosenberg
 **
-**  $Id: projections.h,v 1.26 2001/03/01 07:30:49 kevin Exp $
+**  $Id$
 **
 **
 **  This program is free software; you can redistribute it and/or modify
@@ -37,6 +37,61 @@ 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
@@ -61,11 +116,16 @@ class Projections
   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);
@@ -73,11 +133,15 @@ class Projections
   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);
-  bool calcArrayPolarCoordinates (unsigned int nx, unsigned int ny, double** ppdView, double** ppdDet);
+  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, int iInterpolate);
+    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;
 
@@ -100,7 +164,7 @@ class Projections
   int geometry() const {return m_geometry;}
   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; }