itk::QuaternionRigidTransformGradientDescentOptimizer Class Reference
[Numerics, Optimizers]

Implement a gradient descent optimizer. More...

#include <itkQuaternionRigidTransformGradientDescentOptimizer.h>

Inheritance diagram for itk::QuaternionRigidTransformGradientDescentOptimizer:

[legend]Collaboration diagram for itk::QuaternionRigidTransformGradientDescentOptimizer:

[legend]List of all members.

Public Types
typedef QuaternionRigidTransformGradientDescentOptimizer	Self
typedef GradientDescentOptimizer	Superclass
typedef SmartPointer< Self >	Pointer
typedef SmartPointer< const Self >	ConstPointer
typedef Superclass::ParametersType	ParametersType
Public Methods
virtual const char *	GetClassName () const
virtual void	AdvanceOneStep (void)
Static Public Methods
Pointer	New ()
Protected Methods
	QuaternionRigidTransformGradientDescentOptimizer ()
virtual	~QuaternionRigidTransformGradientDescentOptimizer ()
void	PrintSelf (std::ostream &os, Indent indent) const

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Detailed Description

Implement a gradient descent optimizer.

QuaternionRigidTransformGradientDescentOptimizer is an extension to the simple gradient descent optimizer implmented in GradientDescentOptimizer. At each iteration the current position is updated according to

p(n+1) = p(n) + learningRate * d f(p(n)) / d p(n)

The learning rate is a fixed scalar defined via SetLearningRate(). The optimizer steps through a user defined number of iterations; no convergence checking is done. The first four components of p are assumed to be the four components of the quaternion. After each update, the quaternion is normalized to have a magnitude of one. This ensures the the transform is purely rigid.

See also:

GradientDescentOptimizer

Definition at line 50 of file itkQuaternionRigidTransformGradientDescentOptimizer.h.

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Member Typedef Documentation

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

Reimplemented from itk::GradientDescentOptimizer. Definition at line 58 of file itkQuaternionRigidTransformGradientDescentOptimizer.h.

typedef Superclass::ParametersType itk::QuaternionRigidTransformGradientDescentOptimizer::ParametersType

Parameters type. It defines a position in the optimization search space. Reimplemented from itk::SingleValuedNonLinearOptimizer. Definition at line 69 of file itkQuaternionRigidTransformGradientDescentOptimizer.h.

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

Reimplemented from itk::GradientDescentOptimizer. Definition at line 57 of file itkQuaternionRigidTransformGradientDescentOptimizer.h.

typedef QuaternionRigidTransformGradientDescentOptimizer itk::QuaternionRigidTransformGradientDescentOptimizer::Self

Standard class typedefs. Reimplemented from itk::GradientDescentOptimizer. Definition at line 55 of file itkQuaternionRigidTransformGradientDescentOptimizer.h.

typedef GradientDescentOptimizer itk::QuaternionRigidTransformGradientDescentOptimizer::Superclass

Reimplemented from itk::GradientDescentOptimizer. Definition at line 56 of file itkQuaternionRigidTransformGradientDescentOptimizer.h.

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Constructor & Destructor Documentation

itk::QuaternionRigidTransformGradientDescentOptimizer::QuaternionRigidTransformGradientDescentOptimizer (    )  [protected]

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

Definition at line 76 of file itkQuaternionRigidTransformGradientDescentOptimizer.h.

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Member Function Documentation

virtual void itk::QuaternionRigidTransformGradientDescentOptimizer::AdvanceOneStep (  void    )  [virtual]

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

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

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

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

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

void itk::QuaternionRigidTransformGradientDescentOptimizer::PrintSelf (  std::ostream &    os, Indent    indent )  const [protected, virtual]

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::GradientDescentOptimizer.

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

• itkQuaternionRigidTransformGradientDescentOptimizer.h

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