itk::FRPROptimizer Class Reference

#include <itkFRPROptimizer.h>

Inheritance diagram for itk::FRPROptimizer:

Collaboration diagram for itk::FRPROptimizer:

Detailed Description

Implements Fletch-Reeves & Polak-Ribiere optimization using dBrent line search.

This optimizer needs a cost function. This optimizer needs to be able to compute partial derivatives of the cost function with respect to each parameter.

The SetStepLength determines the initial distance to step in a line direction when bounding the minimum (using bracketing triple spaced using a derivative-based search strategy).

The StepTolerance terminates optimization when the parameter values are known to be within this (scaled) distance of the local extreme.

The ValueTolerance terminates optimization when the cost function values at the current parameters and at the local extreme are likely (within a second order approximation) to be within this is tolerance.

Definition at line 49 of file itkFRPROptimizer.h.

Public Types
typedef SmartPointer< const Self >	ConstPointer
typedef CostFunctionType::Pointer	CostFunctionPointer
typedef SingleValuedCostFunction	CostFunctionType
typedef SingleValuedNonLinearOptimizer::ParametersType	ParametersType
typedef SmartPointer< Self >	Pointer
typedef FRPROptimizer	Self
typedef PowellOptimizer	Superclass
Public Types inherited from itk::PowellOptimizer
typedef SmartPointer< const Self >	ConstPointer
typedef CostFunctionType::Pointer	CostFunctionPointer
typedef SingleValuedCostFunction	CostFunctionType
typedef SingleValuedNonLinearOptimizer::ParametersType	ParametersType
typedef SmartPointer< Self >	Pointer
typedef PowellOptimizer	Self
typedef SingleValuedNonLinearOptimizer	Superclass
Public Types inherited from itk::SingleValuedNonLinearOptimizer
typedef SmartPointer< const Self >	ConstPointer
typedef CostFunctionType::Pointer	CostFunctionPointer
typedef SingleValuedCostFunction	CostFunctionType
typedef CostFunctionType::DerivativeType	DerivativeType
typedef CostFunctionType::MeasureType	MeasureType
typedef Superclass::ParametersType	ParametersType
typedef SmartPointer< Self >	Pointer
typedef SingleValuedNonLinearOptimizer	Self
typedef NonLinearOptimizer	Superclass
Public Types inherited from itk::NonLinearOptimizer
typedef SmartPointer< const Self >	ConstPointer
typedef Superclass::ParametersType	ParametersType
typedef SmartPointer< Self >	Pointer
typedef Superclass::ScalesType	ScalesType
typedef NonLinearOptimizer	Self
typedef Optimizer	Superclass
Public Types inherited from itk::Optimizer
typedef SmartPointer< const Self >	ConstPointer
typedef OptimizerParameters < double >	ParametersType
typedef SmartPointer< Self >	Pointer
typedef Array< double >	ScalesType
typedef Optimizer	Self
typedef Object	Superclass
Public Types inherited from itk::Object
typedef SmartPointer< const Self >	ConstPointer
typedef SmartPointer< Self >	Pointer
typedef Object	Self
typedef LightObject	Superclass
Public Types inherited from itk::LightObject
typedef SmartPointer< const Self >	ConstPointer
typedef SmartPointer< Self >	Pointer
typedef LightObject	Self

Public Member Functions
virtual ::itk::LightObject::Pointer	CreateAnother (void) const
virtual const char *	GetNameOfClass () const
void	SetToFletchReeves ()
void	SetToPolakRibiere ()
void	StartOptimization ()
virtual void	SetUseUnitLengthGradient (bool _arg)
virtual bool	GetUseUnitLengthGradient () const
Public Member Functions inherited from itk::PowellOptimizer
virtual ::itk::LightObject::Pointer	CreateAnother (void) const
virtual const bool &	GetCatchGetValueException ()
virtual const unsigned int &	GetCurrentIteration ()
virtual const unsigned int &	GetCurrentLineIteration ()
virtual const double &	GetMetricWorstPossibleValue ()
const std::string	GetStopConditionDescription () const
virtual void	SetCatchGetValueException (bool _arg)
virtual void	SetMetricWorstPossibleValue (double _arg)
void	StartOptimization ()
void	StopOptimization ()
virtual void	SetMaximize (bool _arg)
virtual void	MaximizeOn ()
virtual void	MaximizeOff ()
virtual const bool &	GetMaximize ()
virtual void	SetMaximumIteration (unsigned int _arg)
virtual const unsigned int &	GetMaximumIteration ()
virtual void	SetMaximumLineIteration (unsigned int _arg)
virtual unsigned int	GetMaximumLineIteration () const
virtual void	SetStepLength (double _arg)
virtual const double &	GetStepLength ()
virtual void	SetStepTolerance (double _arg)
virtual const double &	GetStepTolerance ()
virtual void	SetValueTolerance (double _arg)
virtual const double &	GetValueTolerance ()
virtual const MeasureType &	GetCurrentCost ()
MeasureType	GetValue () const
Public Member Functions inherited from itk::SingleValuedNonLinearOptimizer
virtual ::itk::LightObject::Pointer	CreateAnother (void) const
virtual const CostFunctionType *	GetCostFunction () const
virtual CostFunctionType *	GetModifiableCostFunction ()
MeasureType	GetValue (const ParametersType &parameters) const
virtual void	SetCostFunction (CostFunctionType *costFunction)

Static Public Member Functions
static Pointer	New ()
Static Public Member Functions inherited from itk::PowellOptimizer
static Pointer	New ()
Static Public Member Functions inherited from itk::SingleValuedNonLinearOptimizer
static Pointer	New ()
Static Public Member Functions inherited from itk::NonLinearOptimizer
static Pointer	New ()
Static Public Member Functions inherited from itk::Optimizer
static Pointer	New ()
Static Public Member Functions inherited from itk::Object
static bool	GetGlobalWarningDisplay ()
static void	GlobalWarningDisplayOff ()
static void	GlobalWarningDisplayOn ()
static Pointer	New ()
static void	SetGlobalWarningDisplay (bool flag)
Static Public Member Functions inherited from itk::LightObject
static void	BreakOnError ()
static Pointer	New ()

Protected Member Functions
	FRPROptimizer ()
virtual void	GetValueAndDerivative (ParametersType &p, double *val, ParametersType *xi)
virtual void	LineOptimize (ParametersType *p, ParametersType &xi, double *val)
virtual void	LineOptimize (ParametersType *p, ParametersType &xi, double *val, ParametersType &tempCoord)
void	PrintSelf (std::ostream &os, Indent indent) const
virtual	~FRPROptimizer ()
Protected Member Functions inherited from itk::PowellOptimizer
virtual void	BracketedLineOptimize (double ax, double bx, double cx, double fa, double fb, double fc, double *extX, double *extVal)
virtual void	BracketedLineOptimize (double ax, double bx, double cx, double fa, double fb, double fc, double *extX, double *extVal, ParametersType &tempCoord)
double	GetLineValue (double x) const
double	GetLineValue (double x, ParametersType &tempCoord) const
virtual unsigned int	GetSpaceDimension ()
virtual bool	GetStop ()
virtual void	LineBracket (double *ax, double *bx, double *cx, double *fa, double *fb, double *fc)
virtual void	LineBracket (double *ax, double *bx, double *cx, double *fa, double *fb, double *fc, ParametersType &tempCoord)
	PowellOptimizer ()
	PowellOptimizer (const PowellOptimizer &)
void	PrintSelf (std::ostream &os, Indent indent) const
virtual void	SetCurrentCost (double _arg)
virtual void	SetCurrentIteration (unsigned int _arg)
void	SetCurrentLinePoint (double x, double fx)
void	SetLine (const ParametersType &origin, const vnl_vector< double > &direction)
void	SetSpaceDimension (unsigned int dim)
virtual void	SetStop (bool _arg)
void	Shift (double *a, double *b, double *c, double d) const
void	Swap (double *a, double *b) const
virtual	~PowellOptimizer ()
Protected Member Functions inherited from itk::SingleValuedNonLinearOptimizer
void	PrintSelf (std::ostream &os, Indent indent) const
	SingleValuedNonLinearOptimizer ()
virtual	~SingleValuedNonLinearOptimizer ()
Protected Member Functions inherited from itk::NonLinearOptimizer
	NonLinearOptimizer ()
virtual	~NonLinearOptimizer ()
Protected Member Functions inherited from itk::Optimizer
	Optimizer ()
virtual void	SetCurrentPosition (const ParametersType &param)
virtual	~Optimizer ()
Protected Member Functions inherited from itk::Object
	Object ()
bool	PrintObservers (std::ostream &os, Indent indent) const
virtual void	SetTimeStamp (const TimeStamp &time)
virtual	~Object ()
Protected Member Functions inherited from itk::LightObject
virtual LightObject::Pointer	InternalClone () const
	LightObject ()
virtual void	PrintHeader (std::ostream &os, Indent indent) const
virtual void	PrintTrailer (std::ostream &os, Indent indent) const
virtual	~LightObject ()

Private Types
enum	OptimizationType {   FletchReeves,   PolakRibiere }

Private Member Functions
	FRPROptimizer (const FRPROptimizer &)

Private Attributes
OptimizationType	m_OptimizationType
bool	m_UseUnitLengthGradient

Additional Inherited Members
Protected Types inherited from itk::LightObject
typedef int	InternalReferenceCountType
Protected Attributes inherited from itk::SingleValuedNonLinearOptimizer
CostFunctionPointer	m_CostFunction

Member Typedef Documentation

typedef SmartPointer< const Self > itk::FRPROptimizer::ConstPointer

Definition at line 57 of file itkFRPROptimizer.h.

typedef CostFunctionType::Pointer itk::FRPROptimizer::CostFunctionPointer

Definition at line 69 of file itkFRPROptimizer.h.

typedef SingleValuedCostFunction itk::FRPROptimizer::CostFunctionType

Type of the Cost Function

Definition at line 65 of file itkFRPROptimizer.h.

typedef SingleValuedNonLinearOptimizer::ParametersType itk::FRPROptimizer::ParametersType

Definition at line 59 of file itkFRPROptimizer.h.

typedef SmartPointer< Self > itk::FRPROptimizer::Pointer

Definition at line 56 of file itkFRPROptimizer.h.

typedef FRPROptimizer itk::FRPROptimizer::Self

Standard "Self" typedef.

Definition at line 54 of file itkFRPROptimizer.h.

typedef PowellOptimizer itk::FRPROptimizer::Superclass

Definition at line 55 of file itkFRPROptimizer.h.

Member Enumeration Documentation

enum itk::FRPROptimizer::OptimizationType

private

Enumerator
FletchReeves
PolakRibiere

Definition at line 107 of file itkFRPROptimizer.h.

Constructor & Destructor Documentation

itk::FRPROptimizer::FRPROptimizer ( )

protected

virtual itk::FRPROptimizer::~FRPROptimizer ( )

protectedvirtual

itk::FRPROptimizer::FRPROptimizer ( const FRPROptimizer &  )

private

Member Function Documentation

virtual::itk::LightObject::Pointer itk::FRPROptimizer::CreateAnother ( void  ) const

virtual

Create an object from an instance, potentially deferring to a factory. This method allows you to create an instance of an object that is exactly the same type as the referring object. This is useful in cases where an object has been cast back to a base class.

Reimplemented from itk::Object.

virtual const char* itk::FRPROptimizer::GetNameOfClass ( ) const

virtual

Run-time type information (and related methods).

Reimplemented from itk::PowellOptimizer.

virtual bool itk::FRPROptimizer::GetUseUnitLengthGradient ( ) const

virtual

Convert gradient to a unit length vector

virtual void itk::FRPROptimizer::GetValueAndDerivative ( ParametersType &  p, double *  val, ParametersType *  xi  )

protectedvirtual

Get the value of the n-dimensional cost function at this scalar step distance along the current line direction from the current line origin. Line origin and distances are set via SetLine

virtual void itk::FRPROptimizer::LineOptimize ( ParametersType *  p, ParametersType &  xi, double *  val  )

protectedvirtual

virtual void itk::FRPROptimizer::LineOptimize ( ParametersType *  p, ParametersType &  xi, double *  val, ParametersType &  tempCoord  )

protectedvirtual

static Pointer itk::FRPROptimizer::New ( )

static

Method for creation through the object factory.

void itk::FRPROptimizer::PrintSelf ( std::ostream &  os, Indent  indent  ) const

protectedvirtual

Methods invoked by Print() to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from itk::Object.

void itk::FRPROptimizer::SetToFletchReeves

(

)

Set it to the Fletch-Reeves optimizer

void itk::FRPROptimizer::SetToPolakRibiere

(

)

Set it to the Fletch-Reeves optimizer

virtual void itk::FRPROptimizer::SetUseUnitLengthGradient ( bool  _arg )

virtual

Convert gradient to a unit length vector

void itk::FRPROptimizer::StartOptimization ( )

virtual

Start optimization.

Reimplemented from itk::Optimizer.

Member Data Documentation

OptimizationType itk::FRPROptimizer::m_OptimizationType

private

Definition at line 112 of file itkFRPROptimizer.h.

bool itk::FRPROptimizer::m_UseUnitLengthGradient

private

Definition at line 114 of file itkFRPROptimizer.h.

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The documentation for this class was generated from the following file:

• itkFRPROptimizer.h