itk::VersorTransformOptimizer Class Reference
[Numerics, Optimizers]

Implement a gradient descent optimizer. More...

#include <itkVersorTransformOptimizer.h>

Inheritance diagram for itk::VersorTransformOptimizer:

[legend]Collaboration diagram for itk::VersorTransformOptimizer:

[legend]List of all members.

Public Types
typedef VersorTransformOptimizer	Self
typedef RegularStepGradientDescentBaseOptimizer	Superclass
typedef SmartPointer< Self >	Pointer
typedef SmartPointer< const Self >	ConstPointer
typedef Versor< double >	VersorType
typedef VersorType::VectorType	VectorType
enum	{ SpaceDimension = 3 }
Public Methods
virtual const char *	GetClassName () const
virtual void	StepAlongGradient (double factor, const DerivativeType &transformedGradient)
Static Public Methods
Pointer	New ()
Protected Methods
	VersorTransformOptimizer ()
virtual	~VersorTransformOptimizer ()

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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 50 of file itkVersorTransformOptimizer.h.

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Member Typedef Documentation

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

Reimplemented from itk::RegularStepGradientDescentBaseOptimizer. Definition at line 58 of file itkVersorTransformOptimizer.h.

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

Reimplemented from itk::RegularStepGradientDescentBaseOptimizer. Definition at line 57 of file itkVersorTransformOptimizer.h.

typedef VersorTransformOptimizer itk::VersorTransformOptimizer::Self

Standard class typedefs. Reimplemented from itk::RegularStepGradientDescentBaseOptimizer. Definition at line 55 of file itkVersorTransformOptimizer.h.

typedef RegularStepGradientDescentBaseOptimizer itk::VersorTransformOptimizer::Superclass

Reimplemented from itk::RegularStepGradientDescentBaseOptimizer. Definition at line 56 of file itkVersorTransformOptimizer.h.

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

Definition at line 72 of file itkVersorTransformOptimizer.h.

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

Versor Type Definition at line 71 of file itkVersorTransformOptimizer.h.

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Member Enumeration Documentation

anonymous enum

This class is specialized for 3D Enumeration values: SpaceDimension  Definition at line 68 of file itkVersorTransformOptimizer.h.

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Constructor & Destructor Documentation

itk::VersorTransformOptimizer::VersorTransformOptimizer (    )  [inline, protected]

Definition at line 79 of file itkVersorTransformOptimizer.h.

virtual itk::VersorTransformOptimizer::~VersorTransformOptimizer (    )  [inline, protected, virtual]

Definition at line 80 of file itkVersorTransformOptimizer.h.

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Member Function Documentation

virtual const char* itk::VersorTransformOptimizer::GetClassName (    )  const [virtual]

Run-time type information (and related methods). Reimplemented from itk::RegularStepGradientDescentBaseOptimizer.

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

Method for creation through the object factory. Reimplemented from itk::RegularStepGradientDescentBaseOptimizer.

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

Advance one step following the gradient direction. Reimplemented from itk::RegularStepGradientDescentBaseOptimizer.

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

• itkVersorTransformOptimizer.h

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