itk::VersorTransformOptimizer Class Reference

#include <itkVersorTransformOptimizer.h>

Inheritance diagram for itk::VersorTransformOptimizer:

Collaboration diagram for itk::VersorTransformOptimizer:

Detailed Description

Implement a gradient descent optimizer.

VersorTransformOptimizer is a variant of the gradient descent optimizer implmented in RegularStepGradientDescentOptimizer.

Versors are not in a vector space, for that reason, the classical gradient descent algorithm has to be modified in order to be applicable to Versors (unit quaternions) that form the group SO(3).

The Versor space has only three degrees of freedom, even though Versors are represented using four values.

This optimizer assumes that the CostFunction to be optimized has an itk::Versor as parameter.

See Also

RegularStepGradientDescentOptimizer

Versor

VersorTransform

Definition at line 52 of file itkVersorTransformOptimizer.h.

Public Types
typedef SmartPointer< const Self >	ConstPointer
typedef SmartPointer< Self >	Pointer
typedef VersorTransformOptimizer	Self
typedef RegularStepGradientDescentBaseOptimizer	Superclass
typedef VersorType::VectorType	VectorType
typedef Versor< double >	VersorType
Public Types inherited from itk::RegularStepGradientDescentBaseOptimizer
typedef SmartPointer< const Self >	ConstPointer
typedef SmartPointer< Self >	Pointer
typedef RegularStepGradientDescentBaseOptimizer	Self
enum	StopConditionType {   GradientMagnitudeTolerance = 1,   StepTooSmall = 2,   ImageNotAvailable = 3,   CostFunctionError = 4,   MaximumNumberOfIterations = 5,   Unknown = 6 }
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 () const
virtual const char *	GetNameOfClass () const
virtual void	StepAlongGradient (double factor, const DerivativeType &transformedGradient) override
Public Member Functions inherited from itk::RegularStepGradientDescentBaseOptimizer
virtual const std::string	GetStopConditionDescription () const override
void	ResumeOptimization ()
virtual void	StartOptimization (void) override
void	StopOptimization ()
virtual void	SetMaximize (bool _arg)
virtual const bool &	GetMaximize () const
virtual void	MaximizeOn ()
virtual void	MaximizeOff ()
bool	GetMinimize () const
void	SetMinimize (bool v)
void	MinimizeOn (void)
void	MinimizeOff (void)
virtual void	SetMaximumStepLength (double _arg)
virtual void	SetMinimumStepLength (double _arg)
virtual void	SetRelaxationFactor (double _arg)
virtual void	SetNumberOfIterations (SizeValueType _arg)
virtual void	SetGradientMagnitudeTolerance (double _arg)
virtual const double &	GetCurrentStepLength () const
virtual const double &	GetMaximumStepLength () const
virtual const double &	GetMinimumStepLength () const
virtual const double &	GetRelaxationFactor () const
virtual const SizeValueType &	GetNumberOfIterations () const
virtual const double &	GetGradientMagnitudeTolerance () const
virtual unsigned int	GetCurrentIteration () const
virtual const StopConditionType &	GetStopCondition () const
virtual const MeasureType &	GetValue () const
virtual const DerivativeType &	GetGradient () const
Public Member Functions inherited from itk::SingleValuedNonLinearOptimizer
virtual const CostFunctionType *	GetCostFunction () const
virtual CostFunctionType *	GetModifiableCostFunction ()
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 *)
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
virtual void	Register () const override
void	RemoveAllObservers ()
void	RemoveObserver (unsigned long tag)
void	SetDebug (bool debugFlag) const
void	SetMetaDataDictionary (const MetaDataDictionary &rhs)
virtual void	SetReferenceCount (int) override
virtual void	UnRegister () const noexceptoverride
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::RegularStepGradientDescentBaseOptimizer
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
	VersorTransformOptimizer ()
virtual	~VersorTransformOptimizer ()
Protected Member Functions inherited from itk::RegularStepGradientDescentBaseOptimizer
virtual void	AdvanceOneStep ()
virtual void	PrintSelf (std::ostream &os, Indent indent) const override
	RegularStepGradientDescentBaseOptimizer ()
virtual void	StepAlongGradient (double, const DerivativeType &)
virtual	~RegularStepGradientDescentBaseOptimizer ()
Protected Member Functions inherited from itk::SingleValuedNonLinearOptimizer
	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 Member Functions
void	operator= (const Self &)
	VersorTransformOptimizer (const Self &)

Additional Inherited Members
Protected Attributes inherited from itk::RegularStepGradientDescentBaseOptimizer
SizeValueType	m_CurrentIteration
double	m_CurrentStepLength
DerivativeType	m_Gradient
double	m_GradientMagnitudeTolerance
bool	m_Maximize
double	m_MaximumStepLength
double	m_MinimumStepLength
SizeValueType	m_NumberOfIterations
DerivativeType	m_PreviousGradient
double	m_RelaxationFactor
bool	m_Stop
StopConditionType	m_StopCondition
std::ostringstream	m_StopConditionDescription
MeasureType	m_Value
Protected Attributes inherited from itk::SingleValuedNonLinearOptimizer
CostFunctionPointer	m_CostFunction
Protected Attributes inherited from itk::Optimizer
ParametersType	m_CurrentPosition
bool	m_ScalesInitialized
Protected Attributes inherited from itk::LightObject
AtomicInt< int >	m_ReferenceCount

Member Typedef Documentation

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

Definition at line 60 of file itkVersorTransformOptimizer.h.

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

Definition at line 59 of file itkVersorTransformOptimizer.h.

typedef VersorTransformOptimizer itk::VersorTransformOptimizer::Self

Standard class typedefs.

Definition at line 57 of file itkVersorTransformOptimizer.h.

typedef RegularStepGradientDescentBaseOptimizer itk::VersorTransformOptimizer::Superclass

Definition at line 58 of file itkVersorTransformOptimizer.h.

typedef VersorType::VectorType itk::VersorTransformOptimizer::VectorType

Definition at line 71 of file itkVersorTransformOptimizer.h.

typedef Versor< double > itk::VersorTransformOptimizer::VersorType

Versor Type

Definition at line 67 of file itkVersorTransformOptimizer.h.

Constructor & Destructor Documentation

itk::VersorTransformOptimizer::VersorTransformOptimizer ( )

inlineprotected

Definition at line 78 of file itkVersorTransformOptimizer.h.

virtual itk::VersorTransformOptimizer::~VersorTransformOptimizer ( )

inlineprotectedvirtual

Definition at line 79 of file itkVersorTransformOptimizer.h.

itk::VersorTransformOptimizer::VersorTransformOptimizer ( const Self &  )

private

Member Function Documentation

virtual::itk::LightObject::Pointer itk::VersorTransformOptimizer::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::RegularStepGradientDescentBaseOptimizer.

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

virtual

Run-time type information (and related methods).

Reimplemented from itk::RegularStepGradientDescentBaseOptimizer.

static Pointer itk::VersorTransformOptimizer::New ( )

static

Method for creation through the object factory.

void itk::VersorTransformOptimizer::operator= ( const Self &  )

private

virtual void itk::VersorTransformOptimizer::StepAlongGradient ( double  factor, const DerivativeType &  transformedGradient  )

overridevirtual

Advance one step following the gradient direction.

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

• itkVersorTransformOptimizer.h