itk::Statistics::SampleClassifier< TSample > Class Template Reference

Integration point for MembershipCalculator, DecisionRule, and target sample data. More...

#include <itkSampleClassifier.h>

Inheritance diagram for itk::Statistics::SampleClassifier< TSample >:

[legend]Collaboration diagram for itk::Statistics::SampleClassifier< TSample >:

[legend]List of all members.

[NOHEADER]
virtual const char *	GetClassName () const
Pointer	New ()
Public Types
typedef SampleClassifier	Self
typedef ClassifierBase< TSample >	Superclass
typedef SmartPointer< Self >	Pointer
typedef MembershipSample< TSample >	OutputType
typedef TSample::MeasurementType	MeasurementType
typedef TSample::MeasurementVectorType	MeasurementVectorType
typedef Superclass::MembershipFunctionPointerVector	MembershipFunctionPointerVector
typedef unsigned int	ClassLabelType
typedef std::vector< ClassLabelType >	ClassLabelVectorType
Public Member Functions
	itkStaticConstMacro (MeasurementVectorSize, unsigned int, TSample::MeasurementVectorSize)
void	SetSample (TSample *sample)
TSample *	GetSample ()
void	SetMembershipFunctionClassLabels (ClassLabelVectorType &labels)
ClassLabelVectorType &	GetMembershipFunctionClassLabels ()
OutputType *	GetOutput ()
Protected Member Functions
	SampleClassifier ()
virtual	~SampleClassifier ()
void	PrintSelf (std::ostream &os, Indent indent) const
void	GenerateData ()

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Detailed Description

template<class TSample>
class itk::Statistics::SampleClassifier< TSample >

Integration point for MembershipCalculator, DecisionRule, and target sample data.

The first template argument is the type of the target sample data that this classifier will assign a class label for each measurement vector. The second one is the type of a membership value calculator for each. A membership calculator represents a specific knowledge about a class. In other words, it should tell us how "likely" is that a measurement vector (pattern) belong to the class. The third argument is the type of decision rule. The main role of a decision rule is comparing the return values of the membership calculators. However, decision rule can include some prior knowledge that can improve the result.

Before you call the GenerateData method to start the classification process, you should plug in all necessary parts ( one or more membership calculators, a decision rule, and a target sample data). To plug in the decision rule, you use SetDecisionRule method, for the target sample data, SetSample method, and for the membership calculators, use AddMembershipCalculator method.

As the method name indicates, you can have more than one membership calculator. One for each classes. The order you put the membership calculator becomes the class label for the class that is represented by the membership calculator.

The classification result is stored in a vector of Subsample object. Each class has its own class sample (Subsample object) that has InstanceIdentifiers for all measurement vectors belong to the class. The InstanceIdentifiers come from the target sample data. Therefore, the Subsample objects act as separate class masks.

Definition at line 66 of file itkSampleClassifier.h.

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Member Typedef Documentation

template<class TSample> typedef unsigned int itk::Statistics::SampleClassifier< TSample >::ClassLabelType

Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >. Definition at line 94 of file itkSampleClassifier.h.

template<class TSample> typedef std::vector< ClassLabelType > itk::Statistics::SampleClassifier< TSample >::ClassLabelVectorType

Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >. Definition at line 95 of file itkSampleClassifier.h. Referenced by itk::Statistics::SampleClassifier< TSample >::~SampleClassifier().

template<class TSample> typedef TSample::MeasurementType itk::Statistics::SampleClassifier< TSample >::MeasurementType

typedefs from TSample object Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >. Definition at line 84 of file itkSampleClassifier.h.

template<class TSample> typedef TSample::MeasurementVectorType itk::Statistics::SampleClassifier< TSample >::MeasurementVectorType

Sets the decision rule Reimplemented from itk::ClassifierBase< TSample >. Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >. Definition at line 85 of file itkSampleClassifier.h.

template<class TSample> typedef Superclass::MembershipFunctionPointerVector itk::Statistics::SampleClassifier< TSample >::MembershipFunctionPointerVector

typedefs from Superclass Reimplemented from itk::ClassifierBase< TSample >. Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >. Definition at line 92 of file itkSampleClassifier.h.

template<class TSample> typedef MembershipSample< TSample > itk::Statistics::SampleClassifier< TSample >::OutputType

Output type for GetClassSample method Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >. Definition at line 81 of file itkSampleClassifier.h.

template<class TSample> typedef SmartPointer< Self > itk::Statistics::SampleClassifier< TSample >::Pointer

Reimplemented from itk::LightProcessObject. Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >. Definition at line 73 of file itkSampleClassifier.h.

template<class TSample> typedef SampleClassifier itk::Statistics::SampleClassifier< TSample >::Self

Standard class typedef Reimplemented from itk::ClassifierBase< TSample >. Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >. Definition at line 71 of file itkSampleClassifier.h.

template<class TSample> typedef ClassifierBase< TSample > itk::Statistics::SampleClassifier< TSample >::Superclass

Reimplemented from itk::ClassifierBase< TSample >. Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >. Definition at line 72 of file itkSampleClassifier.h.

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Constructor & Destructor Documentation

template<class TSample> itk::Statistics::SampleClassifier< TSample >::SampleClassifier (   )  [protected]

template<class TSample> virtual itk::Statistics::SampleClassifier< TSample >::~SampleClassifier (   )  [inline, protected, virtual]

Definition at line 118 of file itkSampleClassifier.h. References itk::Statistics::SampleClassifier< TSample >::ClassLabelVectorType.

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Member Function Documentation

template<class TSample> void itk::Statistics::SampleClassifier< TSample >::GenerateData (   )  [protected, virtual]

Starts the classification process Implements itk::ClassifierBase< TSample >. Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >.

template<class TSample> virtual const char* itk::Statistics::SampleClassifier< TSample >::GetClassName (   )  const [virtual]

Standard macros Reimplemented from itk::ClassifierBase< TSample >. Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >.

template<class TSample> ClassLabelVectorType& itk::Statistics::SampleClassifier< TSample >::GetMembershipFunctionClassLabels (   )  [inline]

Gets the user given class labels Definition at line 110 of file itkSampleClassifier.h.

template<class TSample> OutputType* itk::Statistics::SampleClassifier< TSample >::GetOutput (   )

Returns the classification result

template<class TSample> TSample* itk::Statistics::SampleClassifier< TSample >::GetSample (   )

Returns the target data

template<class TSample> itk::Statistics::SampleClassifier< TSample >::itkStaticConstMacro (  MeasurementVectorSize  , unsigned  int, TSample::MeasurementVectorSize  )

Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >.

template<class TSample> Pointer itk::Statistics::SampleClassifier< TSample >::New (   )  [static]

Standard macros Reimplemented from itk::LightProcessObject. Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >.

template<class TSample> void itk::Statistics::SampleClassifier< TSample >::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::ClassifierBase< TSample >. Reimplemented in itk::Statistics::SampleClassifierWithMask< TSample, TMaskSample >.

template<class TSample> void itk::Statistics::SampleClassifier< TSample >::SetMembershipFunctionClassLabels (  ClassLabelVectorType &  labels  )

Sets the user given class labels for membership functions. If users do not provide class labels for membership functions by calling this function, then the index of the membership function vector for a membership function will be used as class label of measurement vectors belong to the membership function

template<class TSample> void itk::Statistics::SampleClassifier< TSample >::SetSample (  TSample *  sample  )

Sets the target data that will be classified by this

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

• itkSampleClassifier.h

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