ITK  6.0.0
Insight Toolkit
Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | List of all members

#include <itkVersorTransformOptimizer.h>

Detailed Description

Implement a gradient descent optimizer.

VersorTransformOptimizer is a variant of the gradient descent optimizer implemented 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 parameters.

See also
RegularStepGradientDescentOptimizer
Versor
VersorTransform

Definition at line 52 of file itkVersorTransformOptimizer.h.

+ Inheritance diagram for itk::VersorTransformOptimizer:
+ Collaboration diagram for itk::VersorTransformOptimizer:

Public Types

using ConstPointer = SmartPointer< const Self >
 
using Pointer = SmartPointer< Self >
 
using Self = VersorTransformOptimizer
 
using Superclass = RegularStepGradientDescentBaseOptimizer
 
using VectorType = VersorType::VectorType
 
using VersorType = Versor< double >
 
- Public Types inherited from itk::RegularStepGradientDescentBaseOptimizer
using ConstPointer = SmartPointer< const Self >
 
using Pointer = SmartPointer< Self >
 
using Self = RegularStepGradientDescentBaseOptimizer
 
using StopConditionEnum = RegularStepGradientDescentBaseOptimizerEnums::StopCondition
 
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 StepAlongGradient (double factor, const DerivativeType &transformedGradient) override
 
- Public Member Functions inherited from itk::RegularStepGradientDescentBaseOptimizer
const char * GetNameOfClass () const override
 
std::string GetStopConditionDescription () const override
 
void ResumeOptimization ()
 
void StartOptimization () override
 
void StopOptimization ()
 
virtual void SetMaximize (bool _arg)
 
virtual const bool & GetMaximize () const
 
virtual void MaximizeOn ()
 
bool GetMinimize () const
 
void SetMinimize (bool v)
 
void MinimizeOn ()
 
void MinimizeOff ()
 
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 SizeValueTypeGetNumberOfIterations () const
 
virtual const double & GetGradientMagnitudeTolerance () const
 
virtual unsigned int GetCurrentIteration () const
 
virtual const StopConditionEnumGetStopCondition () const
 
virtual const MeasureTypeGetValue () const
 
virtual const DerivativeTypeGetGradient () const
 
- Public Member Functions inherited from itk::SingleValuedNonLinearOptimizer
virtual CostFunctionTypeGetModifiableCostFunction ()
 
const char * GetNameOfClass () const override
 
MeasureType GetValue (const ParametersType &parameters) const
 
virtual void SetCostFunction (CostFunctionType *costFunction)
 
const char * GetNameOfClass () const override
 
- Public Member Functions inherited from itk::Optimizer
virtual const ParametersTypeGetCurrentPosition () const
 
virtual const ParametersTypeGetInitialPosition () const
 
const char * GetNameOfClass () const override
 
virtual std::string GetStopConditionDescription () const
 
virtual void SetInitialPosition (const ParametersType &param)
 
void SetScales (const ScalesType &scales)
 
virtual void StartOptimization ()
 
virtual const ScalesTypeGetScales () const
 
virtual const ScalesTypeGetInverseScales () 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
 
CommandGetCommand (unsigned long tag)
 
bool GetDebug () const
 
MetaDataDictionaryGetMetaDataDictionary ()
 
const MetaDataDictionaryGetMetaDataDictionary () const
 
virtual ModifiedTimeType GetMTime () const
 
const char * GetNameOfClass () const override
 
virtual const TimeStampGetTimeStamp () 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 Pointer CreateAnother () const
 
virtual void Delete ()
 
virtual const char * GetNameOfClass () const
 
virtual int GetReferenceCount () const
 
void Print (std::ostream &os, Indent indent=0) const
 
virtual void Register () const
 
virtual void SetReferenceCount (int)
 
virtual void UnRegister () const noexcept
 

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 val)
 
- Static Public Member Functions inherited from itk::LightObject
static void BreakOnError ()
 
static Pointer New ()
 

Protected Member Functions

 VersorTransformOptimizer ()=default
 
 ~VersorTransformOptimizer () override=default
 
- Protected Member Functions inherited from itk::RegularStepGradientDescentBaseOptimizer
virtual void AdvanceOneStep ()
 
void PrintSelf (std::ostream &os, Indent indent) const override
 
 RegularStepGradientDescentBaseOptimizer ()
 
virtual void StepAlongGradient (double, const DerivativeType &)
 
 ~RegularStepGradientDescentBaseOptimizer () override=default
 
- 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 ()
 
void PrintSelf (std::ostream &os, Indent indent) const override
 
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
 
void PrintSelf (std::ostream &os, Indent indent) const override
 
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 PrintSelf (std::ostream &os, Indent indent) const
 
virtual void PrintTrailer (std::ostream &os, Indent indent) const
 
virtual ~LightObject ()
 

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

Member Typedef Documentation

◆ ConstPointer

Definition at line 61 of file itkVersorTransformOptimizer.h.

◆ Pointer

Definition at line 60 of file itkVersorTransformOptimizer.h.

◆ Self

Standard class type aliases.

Definition at line 58 of file itkVersorTransformOptimizer.h.

◆ Superclass

Definition at line 59 of file itkVersorTransformOptimizer.h.

◆ VectorType

Definition at line 71 of file itkVersorTransformOptimizer.h.

◆ VersorType

Versor Type

Definition at line 70 of file itkVersorTransformOptimizer.h.

Constructor & Destructor Documentation

◆ VersorTransformOptimizer()

itk::VersorTransformOptimizer::VersorTransformOptimizer ( )
protecteddefault

◆ ~VersorTransformOptimizer()

itk::VersorTransformOptimizer::~VersorTransformOptimizer ( )
overrideprotecteddefault

Member Function Documentation

◆ GetNameOfClass()

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

◆ New()

static Pointer itk::VersorTransformOptimizer::New ( )
static

Method for creation through the object factory.

◆ StepAlongGradient()

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

Advance one step following the gradient direction.

Reimplemented from itk::RegularStepGradientDescentBaseOptimizer.


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