** This is part of the CTSim program
** Copyright (c) 1983-2001 Kevin Rosenberg
**
-** $Id: projections.h,v 1.30 2001/03/11 06:34:37 kevin Exp $
+** $Id$
**
**
** This program is free software; you can redistribute it and/or modify
//used for rebinning divergent beam projections to parallel
-class ParallelRaysumCoordinate {
+class ParallelRaysumCoordinate {
public:
double m_dT; // Distance from center of origin
double m_dTheta; // perpendicular angle to origin
double m_dRaysum;
- bool lessThanT (ParallelRaysumCoordinate& rCompare)
- {return m_dT < rCompare.m_dT; }
- bool lessThanTheta (ParallelRaysumCoordinate& rCompare)
- {return m_dTheta < rCompare.m_dTheta; }
-
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; }
class ParallelRaysums {
public:
- ParallelRaysums (Projections* pProjections);
+
+ 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;
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);
+ 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);
CoordinateContainer m_vecpCoordinates;
CoordinateContainer m_vecpSortedByT;
CoordinateContainer m_vecpSortedByTheta;
+ ParallelRaysumCoordinate* m_pCoordinates;
int m_iNumCoordinates;
int m_iNumView;
int m_iNumDet;
+ int m_iThetaRange;
};
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();
+ 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;
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; }
DetectorArray& getDetectorArray (const int iview)
{ return (*m_projData[iview]); }
-
+
const DetectorArray& getDetectorArray (const int iview) const
{ return (*m_projData[iview]); }
static bool copyViewData (const char* const filename, std::ostream& os, int startView, int endView);
static bool copyViewData (const std::string& filename, std::ostream& os, int startView, int endView);
-
+
private:
- int m_headerSize; // Size of disk file header
- int m_geometry; // Geometry of scanner
- class DetectorArray **m_projData; // Pointer to array of detarray_st pointers
- std::string m_remark; // description of raysum data
- int m_nDet; // number of detectors in array
- int m_nView; // number of rotated views
- double m_calcTime; // time required to calculate raysums
- double m_rotStart; // starting view rotation
- double m_rotInc; // angle between rotations
- double m_detStart; // distance of beginning detector to center phantom
- double m_detInc; // increment between detectors
+ int m_headerSize; // Size of disk file header
+ int m_geometry; // Geometry of scanner
+ class DetectorArray **m_projData; // Pointer to array of detarray_st pointers
+ std::string m_remark; // description of raysum data
+ int m_nDet; // number of detectors in array
+ int m_nView; // number of rotated views
+ double m_calcTime; // time required to calculate raysums
+ double m_rotStart; // starting view rotation
+ double m_rotInc; // angle between rotations
+ double m_detStart; // distance of beginning detector to center phantom
+ double m_detInc; // increment between detectors
double m_dFocalLength;
double m_dSourceDetectorLength;
double m_dViewDiameter;
projects / ctsim.git / blobdiff