#include <itkExhaustiveOptimizerv4.h>

Inheritance diagram for itk::ExhaustiveOptimizerv4< TInternalComputationValueType >:

Collaboration diagram for itk::ExhaustiveOptimizerv4< TInternalComputationValueType >:

Detailed Description

template<typename TInternalComputationValueType>
class itk::ExhaustiveOptimizerv4< TInternalComputationValueType >

Optimizer that fully samples a grid on the parametric space.

This optimizer is equivalent to an exahaustive search in a discrete grid defined over the parametric space. The grid is centered on the initial position. The subdivisions of the grid along each one of the dimensions of the parametric space is defined by an array of number of steps.

A typical use is to plot the metric space to get an idea of how noisy it is. An example is given below, where it is desired to plot the metric space with respect to translations along x, y and z in a 3D registration application: Here it is assumed that the transform is Euler3DTransform.

OptimizerType::StepsType steps( m_Transform->GetNumberOfParameters() );
steps[0] = 10;
steps[1] = 10;
steps[2] = 10;
m_Optimizer->SetNumberOfSteps( steps );
m_Optimizer->SetStepLength( 2 );

The optimizer throws IterationEvents after every iteration. We use this to plot the metric space in an image as follows:

if( itk::IterationEvent().CheckEvent(& event ) )
{
  IndexType index;
  index[0] = m_Optimizer->GetCurrentIndex()[0];
  index[1] = m_Optimizer->GetCurrentIndex()[1];
  index[2] = m_Optimizer->GetCurrentIndex()[2];
  image->SetPixel( index, m_Optimizer->GetCurrentValue() );
}

The image size is expected to be 11 x 11 x 11.

If you wish to use different step lengths along each parametric axis, you can use the SetScales() method. This accepts an array, each element represents the number of subdivisions per step length. For instance scales of [0.5 1 4] along with a step length of 2 will cause the optimizer to search the metric space on a grid with x,y,z spacing of [1 2 8].

Physical dimensions of the grid are influenced by both the scales and the number of steps along each dimension, a side of the region is stepLength*(2*numberOfSteps[d]+1)*scaling[d].

Examples:: WikiExamples/Registration/ExhaustiveOptimizer.cxx.

Definition at line 78 of file itkExhaustiveOptimizerv4.h.

Public Types
using	ConstPointer = SmartPointer< const Self >

using	MeasureType = typename Superclass::MeasureType

using	ParametersType = typename Superclass::ParametersType

using	Pointer = SmartPointer< Self >

using	ScalesType = typename Superclass::ScalesType

using	Self = ExhaustiveOptimizerv4

using	StepsType = Array< SizeValueType >

using	Superclass = ObjectToObjectOptimizerBaseTemplate< TInternalComputationValueType >

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

using	DerivativeType = typename MetricType::DerivativeType

using	MeasureType = typename MetricType::MeasureType

using	MetricType = ObjectToObjectMetricBaseTemplate< TInternalComputationValueType >

using	MetricTypePointer = typename MetricType::Pointer

using	NumberOfParametersType = typename MetricType::NumberOfParametersType

using	ParametersType = OptimizerParameters< TInternalComputationValueType >

using	Pointer = SmartPointer< Self >

using	ScalesEstimatorType = OptimizerParameterScalesEstimatorTemplate< TInternalComputationValueType >

using	ScalesType = OptimizerParameters< TInternalComputationValueType >

using	Self = ObjectToObjectOptimizerBaseTemplate

using	StopConditionDescriptionType = std::ostringstream

using	StopConditionReturnStringType = std::string

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

virtual const ParametersType &	GetCurrentIndex () const

virtual const MeasureType &	GetCurrentValue () const

ParametersType &	GetInitialPosition ()

virtual const MeasureType &	GetMaximumMetricValue () const

virtual const ParametersType &	GetMaximumMetricValuePosition () const

virtual const MeasureType &	GetMinimumMetricValue () const

virtual const ParametersType &	GetMinimumMetricValuePosition () const

virtual const char *	GetNameOfClass () const

virtual const StepsType &	GetNumberOfSteps () const

virtual const double &	GetStepLength () const

const std::string	GetStopConditionDescription () const override

void	ResumeWalking ()

void	SetInitialPosition (const ParametersType &param)

virtual void	SetNumberOfSteps (StepsType _arg)

virtual void	SetStepLength (double _arg)

void	StartOptimization (bool doOnlyInitialization=false) override

void	StartWalking ()

void	StopWalking ()

Public Member Functions inherited from itk::ObjectToObjectOptimizerBaseTemplate< TInternalComputationValueType >
virtual SizeValueType	GetCurrentIteration () const

virtual const MeasureType &	GetCurrentMetricValue () const

virtual const ParametersType &	GetCurrentPosition () const

virtual SizeValueType	GetNumberOfIterations () const

virtual const ThreadIdType &	GetNumberOfWorkUnits () const

virtual const ScalesType &	GetScales () const

virtual const bool &	GetScalesAreIdentity () const

bool	GetScalesInitialized () const

virtual const MeasureType &	GetValue () const

virtual const ScalesType &	GetWeights () const

virtual const bool &	GetWeightsAreIdentity () const

virtual void	SetNumberOfIterations (SizeValueType _arg)

virtual void	SetNumberOfWorkUnits (ThreadIdType number)

virtual void	SetScalesEstimator (ScalesEstimatorType *_arg)

virtual void	SetWeights (ScalesType _arg)

virtual void	SetMetric (MetricType *_arg)

virtual MetricType *	GetModifiableMetric ()

virtual const MetricType *	GetMetric () const

virtual void	SetScales (const ScalesType &scales)

virtual void	SetDoEstimateScales (bool _arg)

virtual const bool &	GetDoEstimateScales () const

virtual void	DoEstimateScalesOn ()

virtual void	DoEstimateScalesOff ()

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

unsigned long	AddObserver (const EventObject &event, Command *) const

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)

void	SetDebug (bool debugFlag) const

void	SetReferenceCount (int) override

void	UnRegister () const noexceptoverride

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
virtual void	Delete ()

virtual int	GetReferenceCount () const

	itkCloneMacro (Self)

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

Static Public Member Functions
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
void	AdvanceOneStep ()

	ExhaustiveOptimizerv4 ()

void	IncrementIndex (ParametersType &param)

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

	~ExhaustiveOptimizerv4 () override=default

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

	ObjectToObjectOptimizerBaseTemplate ()

	~ObjectToObjectOptimizerBaseTemplate () override

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

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

virtual void	SetTimeStamp (const TimeStamp &time)

	~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 ()

Protected Attributes
ParametersType	m_CurrentIndex

MeasureType	m_CurrentValue

ParametersType	m_InitialPosition

MeasureType	m_MaximumMetricValue

ParametersType	m_MaximumMetricValuePosition

MeasureType	m_MinimumMetricValue

ParametersType	m_MinimumMetricValuePosition

StepsType	m_NumberOfSteps

double	m_StepLength {1.0}

bool	m_Stop {false}

Protected Attributes inherited from itk::ObjectToObjectOptimizerBaseTemplate< TInternalComputationValueType >
SizeValueType	m_CurrentIteration

MeasureType	m_CurrentMetricValue

bool	m_DoEstimateScales

MetricTypePointer	m_Metric

SizeValueType	m_NumberOfIterations

ThreadIdType	m_NumberOfWorkUnits

ScalesType	m_Scales

bool	m_ScalesAreIdentity

ScalesEstimatorType::Pointer	m_ScalesEstimator

ScalesType	m_Weights

bool	m_WeightsAreIdentity

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

Private Attributes
std::ostringstream	m_StopConditionDescription

Member Typedef Documentation

template<typename TInternalComputationValueType >

using itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::ConstPointer = SmartPointer< const Self >

Definition at line 88 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

using itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::MeasureType = typename Superclass::MeasureType

Measure type

Definition at line 100 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

using itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::ParametersType = typename Superclass::ParametersType

Parameters type

Definition at line 103 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

using itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::Pointer = SmartPointer< Self >

Definition at line 87 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

using itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::ScalesType = typename Superclass::ScalesType

Scales type

Definition at line 106 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

using itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::Self = ExhaustiveOptimizerv4

Standard "Self" type alias.

Definition at line 85 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

using itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::StepsType = Array< SizeValueType >

Steps type

Definition at line 97 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

using itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::Superclass = ObjectToObjectOptimizerBaseTemplate<TInternalComputationValueType>

Definition at line 86 of file itkExhaustiveOptimizerv4.h.

Constructor & Destructor Documentation

template<typename TInternalComputationValueType >

itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::ExhaustiveOptimizerv4 ( )

protected

template<typename TInternalComputationValueType >

itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::~ExhaustiveOptimizerv4 ( )

overrideprotecteddefault

Member Function Documentation

template<typename TInternalComputationValueType >

void itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::AdvanceOneStep ( )

protected

Advance to the next grid position.

template<typename TInternalComputationValueType >

virtual::itk::LightObject::Pointer itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::CreateAnother ( ) 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.

template<typename TInternalComputationValueType >

virtual const ParametersType& itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::GetCurrentIndex ( ) const

virtual

template<typename TInternalComputationValueType >

virtual const MeasureType& itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::GetCurrentValue ( ) const

virtual

template<typename TInternalComputationValueType >

ParametersType& itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::GetInitialPosition ( )

inline

Get the position to initialize the optimization.

Definition at line 137 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

virtual const MeasureType& itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::GetMaximumMetricValue ( ) const

virtual

template<typename TInternalComputationValueType >

virtual const ParametersType& itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::GetMaximumMetricValuePosition ( ) const

virtual

template<typename TInternalComputationValueType >

virtual const MeasureType& itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::GetMinimumMetricValue ( ) const

virtual

template<typename TInternalComputationValueType >

virtual const ParametersType& itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::GetMinimumMetricValuePosition ( ) const

virtual

template<typename TInternalComputationValueType >

virtual const char* itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::GetNameOfClass ( ) const

virtual

Run-time type information (and related methods).

Reimplemented from itk::ObjectToObjectOptimizerBaseTemplate< TInternalComputationValueType >.

template<typename TInternalComputationValueType >

virtual const StepsType& itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::GetNumberOfSteps ( ) const

virtual

template<typename TInternalComputationValueType >

virtual const double& itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::GetStepLength ( ) const

virtual

template<typename TInternalComputationValueType >

const std::string itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::GetStopConditionDescription ( ) const

overridevirtual

Get the reason for termination

Implements itk::ObjectToObjectOptimizerBaseTemplate< TInternalComputationValueType >.

template<typename TInternalComputationValueType >

void itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::IncrementIndex ( ParametersType & param )

protected

template<typename TInternalComputationValueType >

static Pointer itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::New ( )

static

Method for creation through the object factory.

template<typename TInternalComputationValueType >

void itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::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.

template<typename TInternalComputationValueType >

void itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::ResumeWalking ( )

Resume the optimization

template<typename TInternalComputationValueType >

void itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::SetInitialPosition ( const ParametersType & param )

Set the position to initialize the optimization.

template<typename TInternalComputationValueType >

virtual void itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::SetNumberOfSteps ( StepsType _arg )

virtual

template<typename TInternalComputationValueType >

virtual void itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::SetStepLength ( double _arg )

virtual

template<typename TInternalComputationValueType >

void itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::StartOptimization ( bool doOnlyInitialization = false )

overridevirtual

Run the optimization.

Parameters

doOnlyInitialization This is false by default. It should only be set to true for special cases when the class should be initialized to perform optimization, but no optimization should be run. For example, itkMultiGradientOptimizerv4 needs to do this.

Note: Derived classes must override and call this superclass method, then perform any additional initialization before performing optimization.

Reimplemented from itk::ObjectToObjectOptimizerBaseTemplate< TInternalComputationValueType >.

template<typename TInternalComputationValueType >

void itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::StartWalking ( )

Start optimization

template<typename TInternalComputationValueType >

void itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::StopWalking ( )

Stop optimization

Member Data Documentation

template<typename TInternalComputationValueType >

ParametersType itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::m_CurrentIndex

protected

Definition at line 158 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

MeasureType itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::m_CurrentValue

protected

Definition at line 154 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

ParametersType itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::m_InitialPosition

protected

Definition at line 153 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

MeasureType itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::m_MaximumMetricValue

protected

Definition at line 159 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

ParametersType itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::m_MaximumMetricValuePosition

protected

Definition at line 162 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

MeasureType itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::m_MinimumMetricValue

protected

Definition at line 160 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

ParametersType itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::m_MinimumMetricValuePosition

protected

Definition at line 161 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

StepsType itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::m_NumberOfSteps

protected

Definition at line 155 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

double itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::m_StepLength {1.0}

protected

Definition at line 157 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

bool itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::m_Stop {false}

protected

Definition at line 156 of file itkExhaustiveOptimizerv4.h.

template<typename TInternalComputationValueType >

std::ostringstream itk::ExhaustiveOptimizerv4< TInternalComputationValueType >::m_StopConditionDescription

private

Definition at line 165 of file itkExhaustiveOptimizerv4.h.

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

itkExhaustiveOptimizerv4.h

Detailed Description

template<typename TInternalComputationValueType> class itk::ExhaustiveOptimizerv4< TInternalComputationValueType >

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Private Attributes

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<typename TInternalComputationValueType>
class itk::ExhaustiveOptimizerv4< TInternalComputationValueType >