#include <itkFRPROptimizer.h>

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 70 of file itkFRPROptimizer.h.

Inheritance diagram for itk::FRPROptimizer:

Collaboration diagram for itk::FRPROptimizer:

Public Types
using	ConstPointer = SmartPointer< const Self >

using	CostFunctionPointer = CostFunctionType::Pointer

using	CostFunctionType = SingleValuedCostFunction

using	ParametersType = SingleValuedNonLinearOptimizer::ParametersType

using	Pointer = SmartPointer< Self >

using	Self = FRPROptimizer

using	Superclass = PowellOptimizer

Public Types inherited from itk::PowellOptimizer
using	ConstPointer = SmartPointer< const Self >

using	CostFunctionPointer = CostFunctionType::Pointer

using	CostFunctionType = SingleValuedCostFunction

using	ParametersType = SingleValuedNonLinearOptimizer::ParametersType

using	Pointer = SmartPointer< Self >

using	Self = PowellOptimizer

using	Superclass = SingleValuedNonLinearOptimizer

Public Types inherited from itk::SingleValuedNonLinearOptimizer
using	ConstPointer = SmartPointer< const Self >

using	CostFunctionPointer = CostFunctionType::Pointer

using	CostFunctionType = SingleValuedCostFunction

using	DerivativeType = CostFunctionType::DerivativeType

using	MeasureType = CostFunctionType::MeasureType

using	ParametersType = Superclass::ParametersType

using	Pointer = SmartPointer< Self >

using	Self = SingleValuedNonLinearOptimizer

using	Superclass = NonLinearOptimizer

Public Types inherited from itk::NonLinearOptimizer
using	ConstPointer = SmartPointer< const Self >

using	ParametersType = Superclass::ParametersType

using	Pointer = SmartPointer< Self >

using	ScalesType = Superclass::ScalesType

using	Self = NonLinearOptimizer

using	Superclass = Optimizer

Public Types inherited from itk::Optimizer
using	ConstPointer = SmartPointer< const Self >

using	ParametersType = OptimizerParameters< double >

using	Pointer = SmartPointer< Self >

using	ScalesType = Array< double >

using	Self = Optimizer

using	Superclass = Object

Public Types inherited from itk::Object
using	ConstPointer = SmartPointer< const Self >

using	Pointer = SmartPointer< Self >

using	Self = Object

using	Superclass = LightObject

Public Types inherited from itk::LightObject
using	ConstPointer = SmartPointer< const Self >

using	Pointer = SmartPointer< Self >

using	Self = LightObject

Public Member Functions
const char *	GetNameOfClass () const override

void	SetToFletchReeves ()

void	SetToPolakRibiere ()

void	StartOptimization () override


virtual void	SetUseUnitLengthGradient (bool _arg)

virtual bool	GetUseUnitLengthGradient () const

virtual void	UseUnitLengthGradientOn ()

Public Member Functions inherited from itk::PowellOptimizer
virtual const bool &	GetCatchGetValueException () const

virtual const unsigned int &	GetCurrentIteration () const

virtual const unsigned int &	GetCurrentLineIteration () const

virtual const double &	GetMetricWorstPossibleValue () const

const char *	GetNameOfClass () const override

std::string	GetStopConditionDescription () const override

virtual void	SetCatchGetValueException (bool _arg)

virtual void	SetMetricWorstPossibleValue (double _arg)

void	StartOptimization () override

void	StopOptimization ()

virtual void	SetMaximize (bool _arg)

virtual void	MaximizeOn ()

virtual const bool &	GetMaximize () const

virtual void	SetMaximumIteration (unsigned int _arg)

virtual const unsigned int &	GetMaximumIteration () const

virtual void	SetMaximumLineIteration (unsigned int _arg)

virtual unsigned int	GetMaximumLineIteration () const

virtual void	SetStepLength (double _arg)

virtual const double &	GetStepLength () const

virtual void	SetStepTolerance (double _arg)

virtual const double &	GetStepTolerance () const

virtual void	SetValueTolerance (double _arg)

virtual const double &	GetValueTolerance () const

virtual const MeasureType &	GetCurrentCost () const

MeasureType	GetValue () const

Public Member Functions inherited from itk::SingleValuedNonLinearOptimizer
virtual CostFunctionType *	GetModifiableCostFunction ()

const char *	GetNameOfClass () const override

MeasureType	GetValue (const ParametersType &parameters) const

virtual void	SetCostFunction (CostFunctionType *costFunction)

Public Member Functions inherited from itk::Optimizer
virtual const ParametersType &	GetCurrentPosition () const

virtual const ParametersType &	GetInitialPosition () const

virtual void	SetInitialPosition (const ParametersType &param)

void	SetScales (const ScalesType &scales)

virtual const ScalesType &	GetScales () const

virtual const ScalesType &	GetInverseScales () const

Public Member Functions inherited from itk::Object
unsigned long	AddObserver (const EventObject &event, Command *cmd) const

unsigned long	AddObserver (const EventObject &event, std::function< void(const EventObject &)> function) const

LightObject::Pointer	CreateAnother () const override

virtual void	DebugOff () const

virtual void	DebugOn () const

Command *	GetCommand (unsigned long tag)

bool	GetDebug () const

MetaDataDictionary &	GetMetaDataDictionary ()

const MetaDataDictionary &	GetMetaDataDictionary () const

virtual ModifiedTimeType	GetMTime () const

virtual const TimeStamp &	GetTimeStamp () const

bool	HasObserver (const EventObject &event) const

void	InvokeEvent (const EventObject &)

void	InvokeEvent (const EventObject &) const

virtual void	Modified () const

void	Register () const override

void	RemoveAllObservers ()

void	RemoveObserver (unsigned long tag) const

void	SetDebug (bool debugFlag) const

void	SetReferenceCount (int) override

void	UnRegister () const noexcept override

void	SetMetaDataDictionary (const MetaDataDictionary &rhs)

void	SetMetaDataDictionary (MetaDataDictionary &&rrhs)

virtual void	SetObjectName (std::string _arg)

virtual const std::string &	GetObjectName () const

Public Member Functions inherited from itk::LightObject
Pointer	Clone () const

virtual void	Delete ()

virtual int	GetReferenceCount () const

void	Print (std::ostream &os, Indent indent=0) const

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 val)

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 override

	~FRPROptimizer () override

Protected Member Functions inherited from itk::PowellOptimizer
virtual void	BracketedLineOptimize (double ax, double bx, double cx, double fa, double functionValueOfb, double fc, double extX, double extVal)

virtual void	BracketedLineOptimize (double ax, double bx, double cx, double fa, double functionValueOfb, 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 x1, double x2, double x3, double f1, double f2, double f3)

virtual void	LineBracket (double x1, double x2, double x3, double f1, double f2, double f3, ParametersType &tempCoord)

	PowellOptimizer ()

	PowellOptimizer (const PowellOptimizer &)

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

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

	~PowellOptimizer () override

Protected Member Functions inherited from itk::SingleValuedNonLinearOptimizer
void	PrintSelf (std::ostream &os, Indent indent) const override

	SingleValuedNonLinearOptimizer ()

	~SingleValuedNonLinearOptimizer () override=default

Protected Member Functions inherited from itk::NonLinearOptimizer
	NonLinearOptimizer ()=default

	~NonLinearOptimizer () override

Protected Member Functions inherited from itk::Optimizer
	Optimizer ()

virtual void	SetCurrentPosition (const ParametersType &param)

	~Optimizer () override=default

Protected Member Functions inherited from itk::Object
	Object ()

bool	PrintObservers (std::ostream &os, Indent indent) const

virtual void	SetTimeStamp (const TimeStamp &timeStamp)

	~Object () override

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
using	OptimizationEnum = FRPROptimizerEnums::Optimization

Private Attributes
OptimizationEnum	m_OptimizationType {}

bool	m_UseUnitLengthGradient {}

Additional Inherited Members
Protected Attributes inherited from itk::SingleValuedNonLinearOptimizer
CostFunctionPointer	m_CostFunction {}

Protected Attributes inherited from itk::Optimizer
ParametersType	m_CurrentPosition {}

bool	m_ScalesInitialized { false }

Protected Attributes inherited from itk::LightObject
std::atomic< int >	m_ReferenceCount {}

Member Typedef Documentation

◆ ConstPointer

using itk::FRPROptimizer::ConstPointer = SmartPointer<const Self>

Definition at line 78 of file itkFRPROptimizer.h.

◆ CostFunctionPointer

using itk::FRPROptimizer::CostFunctionPointer = CostFunctionType::Pointer

Definition at line 90 of file itkFRPROptimizer.h.

◆ CostFunctionType

using itk::FRPROptimizer::CostFunctionType = SingleValuedCostFunction

Type of the Cost Function

Definition at line 89 of file itkFRPROptimizer.h.

◆ OptimizationEnum

using itk::FRPROptimizer::OptimizationEnum = FRPROptimizerEnums::Optimization

private

Definition at line 130 of file itkFRPROptimizer.h.

◆ ParametersType

using itk::FRPROptimizer::ParametersType = SingleValuedNonLinearOptimizer::ParametersType

Definition at line 80 of file itkFRPROptimizer.h.

◆ Pointer

using itk::FRPROptimizer::Pointer = SmartPointer<Self>

Definition at line 77 of file itkFRPROptimizer.h.

◆ Self

using itk::FRPROptimizer::Self = FRPROptimizer

Standard "Self" type alias.

Definition at line 75 of file itkFRPROptimizer.h.

◆ Superclass

using itk::FRPROptimizer::Superclass = PowellOptimizer

Definition at line 76 of file itkFRPROptimizer.h.

Constructor & Destructor Documentation

◆ FRPROptimizer()

itk::FRPROptimizer::FRPROptimizer ( )

protected

◆ ~FRPROptimizer()

itk::FRPROptimizer::~FRPROptimizer ( )

overrideprotected

Member Function Documentation

◆ GetNameOfClass()

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

overridevirtual

See also: LightObject::GetNameOfClass()

Reimplemented from itk::Object.

◆ GetUseUnitLengthGradient()

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

virtual

Convert gradient to a unit length vector

◆ GetValueAndDerivative()

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

◆ LineOptimize() [1/2]

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

protectedvirtual

◆ LineOptimize() [2/2]

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

protectedvirtual

◆ New()

static Pointer itk::FRPROptimizer::New ( )

static

Method for creation through the object factory.

◆ PrintSelf()

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

overrideprotectedvirtual

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.

◆ SetToFletchReeves()

void itk::FRPROptimizer::SetToFletchReeves ( )

Set it to the Fletch-Reeves optimizer

◆ SetToPolakRibiere()

void itk::FRPROptimizer::SetToPolakRibiere ( )

Set it to the Fletch-Reeves optimizer

◆ SetUseUnitLengthGradient()

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

virtual

Convert gradient to a unit length vector

◆ StartOptimization()

void itk::FRPROptimizer::StartOptimization ( )

overridevirtual

Start optimization.

Reimplemented from itk::Optimizer.

◆ UseUnitLengthGradientOn()

virtual void itk::FRPROptimizer::UseUnitLengthGradientOn ( )

virtual

Convert gradient to a unit length vector

Member Data Documentation

◆ m_OptimizationType

OptimizationEnum itk::FRPROptimizer::m_OptimizationType {}

private

Definition at line 137 of file itkFRPROptimizer.h.

◆ m_UseUnitLengthGradient

bool itk::FRPROptimizer::m_UseUnitLengthGradient {}

private

Definition at line 139 of file itkFRPROptimizer.h.

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

itkFRPROptimizer.h

Detailed Description

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Types

Private Attributes

Additional Inherited Members

Member Typedef Documentation

◆ ConstPointer

◆ CostFunctionPointer

◆ CostFunctionType

◆ OptimizationEnum

◆ ParametersType

◆ Pointer

◆ Self

◆ Superclass

Constructor & Destructor Documentation

◆ FRPROptimizer()

◆ ~FRPROptimizer()

Member Function Documentation

◆ GetNameOfClass()

◆ GetUseUnitLengthGradient()

◆ GetValueAndDerivative()

◆ LineOptimize() [1/2]

◆ LineOptimize() [2/2]

◆ New()

◆ PrintSelf()

◆ SetToFletchReeves()

◆ SetToPolakRibiere()

◆ SetUseUnitLengthGradient()

◆ StartOptimization()

◆ UseUnitLengthGradientOn()

Member Data Documentation

◆ m_OptimizationType

◆ m_UseUnitLengthGradient