cmtk::BestNeighbourOptimizer Class Reference [cmtkRegistration Library]

Best-neighbour-search optimizer. More...

#include <cmtkBestNeighbourOptimizer.h>

Inheritance diagram for cmtk::BestNeighbourOptimizer:

Collaboration diagram for cmtk::BestNeighbourOptimizer:

List of all members.

Public Types
typedef BestNeighbourOptimizer	Self
	This class.
typedef Optimizer	Superclass
	Superclass.
Public Member Functions
	BestNeighbourOptimizer (const Self::ParameterType stepFactor=0.5)
	Constructor.
virtual CallbackResult	Optimize (CoordinateVector &, const Self::ParameterType=1, const Self::ParameterType=0)
	Perform the optimization.
Private Attributes
Self::ParameterType	StepFactor
	Search step factor.

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Detailed Description

Best-neighbour-search optimizer.

This class implements a search technique introduced by Studholme et al. By modifying each parameter of the search space by a certain step up- and downwards, all "neighbours" of the current parameter vector are visited. For each of these, the target function (functional) is evaluated. The search then continues from the parameter vector producing the maximum value. If no further improvement is possible, the step size is decreased by a given factor until it reaches a lower bound.

Definition at line 56 of file cmtkBestNeighbourOptimizer.h.

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Member Typedef Documentation

typedef BestNeighbourOptimizer cmtk::BestNeighbourOptimizer::Self

This class.

Reimplemented from cmtk::Optimizer.

Definition at line 62 of file cmtkBestNeighbourOptimizer.h.

typedef Optimizer cmtk::BestNeighbourOptimizer::Superclass

Superclass.

Reimplemented from cmtk::Optimizer.

Definition at line 65 of file cmtkBestNeighbourOptimizer.h.

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Constructor & Destructor Documentation

cmtk::BestNeighbourOptimizer::BestNeighbourOptimizer

(

const Self::ParameterType

stepFactor = 0.5 )

[inline]

Constructor.

Hand functional and callback to parent class and initialize local variables.

Parameters:

stepFactor

Factor by which the search step size is decreased.

Definition at line 72 of file cmtkBestNeighbourOptimizer.h.

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Member Data Documentation

Self::ParameterType cmtk::BestNeighbourOptimizer::StepFactor [private]

Search step factor.

This variable determines the factor by which to decrease the search step size if no further improvement is possible at a certain resolution. Reasonable values are in the range 0 < StepFactor < 1. For most cases, a value of 0.5 has been found to provide optimum accuracy and performance.

Definition at line 88 of file cmtkBestNeighbourOptimizer.h.

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

• libs/Registration/cmtkBestNeighbourOptimizer.h
• libs/Registration/cmtkBestNeighbourOptimizer.cxx