This class is designed to manage the projection part of the reconstruction. More...

#include <oProjectorManager.hh>

Collaboration diagram for oProjectorManager:

Public Member Functions
	oProjectorManager ()
	The constructor of oProjectorManager.
	~oProjectorManager ()
	The destructor of oProjectorManager.
int	CheckParameters ()
	A function used to check the parameters settings.
int	Initialize ()
	A function used to initialize the manager and the projectors or system matrices it manages.
oProjectionLine *	ComputeProjectionLine (vEvent *ap_Event, int a_th)
	This function is used to compute system matrix elements from the associated projector or pre-computed system matrix given a vEvent and a thread index. As this function returns a pointer to a oProjectionLine (filled from its own oProjectionLine buffers), if a problem occurs while calling the Project functions of the vProjector or oSystemMatrix, it uses the Exit() function to stop the process.
void	SetVerbose (int a_verboseLevel)
	Set the verbose level.
void	SetScanner (vScanner *ap_Scanner)
	Set the scanner in use.
void	SetImageDimensionsAndQuantification (oImageDimensionsAndQuantification *ap_ImageDimensionsAndQuantification)
	Set the image dimensions in use.
void	SetDataFile (vDataFile *ap_DataFile)
	Set a data file in use to later recover some information from it.
void	SetComputationStrategy (int a_computationStrategy)
	Set the computation strategy for the system matrix elements storage.
void	SetOptionsForward (const string &a_optionsForward)
	Set the forward projection options contained in the provided string.
void	SetOptionsBackward (const string &a_optionsBackward)
	Set the backward projection options contained in the provided string.
void	SetOptionsCommon (const string &a_optionsCommon)
	Set the common projection options contained in the provided string.
int	GetNbTOFBins ()
	Get the number of TOF bins associated to the projector.
int	GetComputationStrategy ()
	Get the computation strategy for the storage in the projection line.
bool	IsForwardOperatorCompatibleWithSPECTAttenuationCorrection ()
bool	IsBackwardOperatorCompatibleWithSPECTAttenuationCorrection ()
Private Member Functions
int	ParseOptionsAndInitializeProjectors ()
	Parse forward and backward projection options contained in the previously provided strings. This function is called inside the Initialize() function.
Private Attributes
vScanner *	mp_Scanner
oImageDimensionsAndQuantification *	mp_ImageDimensionsAndQuantification
vDataFile *	mp_DataFile
bool	m_applyTOF
bool	m_applyPOI
int	m_nbTOFBins
int	m_computationStrategy
string	m_optionsForward
string	m_optionsBackward
string	m_optionsCommon
oSystemMatrix *	mp_SystemMatrixForward
oSystemMatrix *	mp_SystemMatrixBackward
vProjector *	mp_ProjectorForward
vProjector *	mp_ProjectorBackward
bool	m_UseSystemMatrixForward
bool	m_UseSystemMatrixBackward
bool	m_UseProjectorForward
bool	m_UseProjectorBackward
bool	m_UseMatchedProjectors
oProjectionLine **	m2p_ProjectionLines
int	m_verbose
bool	m_checked
bool	m_initialized

Detailed Description

This class is designed to manage the projection part of the reconstruction.

As each manager class, it is created in the main program, all parameters are then set, checked, and the manager is initialized. The manager is then used by the algorithm itself, where the function ComputeProjectionLine() is called to compute the system matrix elements for the provided event, which are stored in a oProjectionLine. For multi-threading implementation, each thread have its own oProjectionLine. The manager will make use of a vProjector or a oSystemMatrix to compute the system matrix elements for forward and backward projections.

Definition at line 32 of file oProjectorManager.hh.

Constructor & Destructor Documentation

oProjectorManager::oProjectorManager ( )

The constructor of oProjectorManager.

This is the default and unique constructor. It does not take any parameter and its role is only to affect default values to each member of the class.

Definition at line 28 of file oProjectorManager.cc.

oProjectorManager::~oProjectorManager ( )

The destructor of oProjectorManager.

This is the default and unique destructor. It does not take any parameter and its role is only to free or delete all structures that were built by this class.

Definition at line 72 of file oProjectorManager.cc.

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Member Function Documentation

int oProjectorManager::CheckParameters ( )

A function used to check the parameters settings.

This function does not take any parameter and is used to check that all mandatory members were correctly parameterized.

Returns:: An integer reflecting the check status; 0 if no problem, another value otherwise.

Definition at line 123 of file oProjectorManager.cc.

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oProjectionLine * oProjectorManager::ComputeProjectionLine	(	vEvent *	ap_Event,
		int	a_th
	)

This function is used to compute system matrix elements from the associated projector or pre-computed system matrix given a vEvent and a thread index. As this function returns a pointer to a oProjectionLine (filled from its own oProjectionLine buffers), if a problem occurs while calling the Project functions of the vProjector or oSystemMatrix, it uses the Exit() function to stop the process.

Parameters:

vEvent*	ap_Event
int	a_th

Returns:: A pointer to the oProjectionLine containing the system matrix elements.

Definition at line 542 of file oProjectorManager.cc.

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public inline int oProjectorManager::GetComputationStrategy ( ) [inline]

Get the computation strategy for the storage in the projection line.

Returns:: The computation strategy m_computationStrategy

Definition at line 158 of file oProjectorManager.hh.

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public inline int oProjectorManager::GetNbTOFBins ( ) [inline]

Get the number of TOF bins associated to the projector.

Returns:: The number of TOF bins m_nbTOFBins

Definition at line 151 of file oProjectorManager.hh.

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int oProjectorManager::Initialize ( )

A function used to initialize the manager and the projectors or system matrices it manages.

This function does not take any parameter and is used to initialize everything that should be initialized. In a few words, it parses the options, then creates and initializes the projectors or system matrices based on the provided options.

Returns:: An integer reflecting the initialization status; 0 if no problem, another value otherwise.

Definition at line 179 of file oProjectorManager.cc.

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bool oProjectorManager::IsBackwardOperatorCompatibleWithSPECTAttenuationCorrection ( )

Returns:: Return the compatibility with SPECT attenuation correction of the backward operator

Definition at line 110 of file oProjectorManager.cc.

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bool oProjectorManager::IsForwardOperatorCompatibleWithSPECTAttenuationCorrection ( )

Returns:: Return the compatibility with SPECT attenuation correction of the forward operator

Definition at line 97 of file oProjectorManager.cc.

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int oProjectorManager::ParseOptionsAndInitializeProjectors ( ) [private]

Parse forward and backward projection options contained in the previously provided strings. This function is called inside the Initialize() function.

Parse forward and backward projection options contained in the m_optionsForward and m_optionsBackward strings. Specific pure virtual functions of the vProjector are used to read parameters and initialize them. If a oSystemMatrix is used, specific functions are also called to read and initialize it. This function is called inside the Initialize() function. The syntax for the declaration of the projector and associated options is described inside the main program.

Returns:: An integer reflecting the parsing and initialization status; 0 if no problem, another value otherwise.

Definition at line 279 of file oProjectorManager.cc.

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public inline void oProjectorManager::SetComputationStrategy ( int a_computationStrategy ) [inline]

Set the computation strategy for the system matrix elements storage.

Parameters:

int	a_computationStrategy

Definition at line 123 of file oProjectorManager.hh.

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public inline void oProjectorManager::SetDataFile ( vDataFile * ap_DataFile ) [inline]

Set a data file in use to later recover some information from it.

Parameters:

vDataFile* ap_DataFile

Definition at line 116 of file oProjectorManager.hh.

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public inline void oProjectorManager::SetImageDimensionsAndQuantification ( oImageDimensionsAndQuantification * ap_ImageDimensionsAndQuantification ) [inline]

Set the image dimensions in use.

Parameters:

oImageDimensionsAndQuantification* ap_ImageDimensionsAndQuantification

Definition at line 109 of file oProjectorManager.hh.

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