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 Member Functions
virtual const char *	GetNameOfClass () const
virtual void	AdvanceOneStep (void)
Static Public Member Functions
Pointer	New ()
Protected Member Functions
	QuaternionRigidTransformGradientDescentOptimizer ()
virtual	~QuaternionRigidTransformGradientDescentOptimizer ()

---

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.

---

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.

---

Constructor & Destructor Documentation

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

Definition at line 75 of file itkQuaternionRigidTransformGradientDescentOptimizer.h.

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

Definition at line 76 of file itkQuaternionRigidTransformGradientDescentOptimizer.h.

---

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::GetNameOfClass (   )  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.

---

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

• itkQuaternionRigidTransformGradientDescentOptimizer.h

---