ITK
4.3.0
Insight Segmentation and Registration Toolkit
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#include <itkMembershipFunctionBase.h>
MembershipFunctionBase defines common interfaces for membership functions.
MembershipFunctionBase is a subclass of FunctionBase which restricts the function type to be a membership function. Membership functions provide a mapping from an arbitrary domain to a set of real numbers. Membership functions are typically used to model or approximate likelihood functions, , i.e. the probability of the measurement belonging to a class .
The Statistics framework models random variables as vectors. Typical uses of MembershipFunctions include templating over a FixedArray, Array, Vector, or VariableLengthVector.
The Evaluate() method returns the membership rank or likelihood that the measurement belongs to the class represented by this membership function.
Evaluations of a single measurement across of set MembershipFunctions can then be passed to a DecisionRule in order to establish class (or group) assignment.
Definition at line 57 of file itkMembershipFunctionBase.h.
Public Types | |
typedef SmartPointer< const Self > | ConstPointer |
typedef unsigned int | MeasurementVectorSizeType |
typedef TVector | MeasurementVectorType |
typedef SmartPointer< Self > | Pointer |
typedef MembershipFunctionBase | Self |
typedef FunctionBase< TVector, double > | Superclass |
Public Types inherited from itk::FunctionBase< TVector, double > | |
typedef SmartPointer< const Self > | ConstPointer |
typedef TVector | InputType |
typedef double | OutputType |
typedef SmartPointer< Self > | Pointer |
typedef FunctionBase | Self |
typedef Object | Superclass |
Public Types inherited from itk::Object | |
typedef SmartPointer< const Self > | ConstPointer |
typedef SmartPointer< Self > | Pointer |
typedef Object | Self |
typedef LightObject | Superclass |
Public Types inherited from itk::LightObject | |
typedef SmartPointer< const Self > | ConstPointer |
typedef SmartPointer< Self > | Pointer |
typedef LightObject | Self |
Public Member Functions | |
virtual double | Evaluate (const MeasurementVectorType &x) const =0 |
virtual MeasurementVectorSizeType | GetMeasurementVectorSize () const |
virtual const char * | GetNameOfClass () const |
virtual void | SetMeasurementVectorSize (MeasurementVectorSizeType s) |
Protected Member Functions | |
MembershipFunctionBase () | |
void | PrintSelf (std::ostream &os, Indent indent) const |
virtual | ~MembershipFunctionBase (void) |
Protected Member Functions inherited from itk::FunctionBase< TVector, double > | |
FunctionBase () | |
~FunctionBase () | |
Protected Member Functions inherited from itk::Object | |
Object () | |
bool | PrintObservers (std::ostream &os, Indent indent) const |
virtual void | SetTimeStamp (const TimeStamp &time) |
virtual | ~Object () |
Protected Member Functions inherited from itk::LightObject | |
virtual LightObject::Pointer | InternalClone () const |
LightObject () | |
virtual void | PrintHeader (std::ostream &os, Indent indent) const |
virtual void | PrintTrailer (std::ostream &os, Indent indent) const |
virtual | ~LightObject () |
Private Member Functions | |
MembershipFunctionBase (const Self &) | |
void | operator= (const Self &) |
Private Attributes | |
MeasurementVectorSizeType | m_MeasurementVectorSize |
Additional Inherited Members | |
Static Public Member Functions inherited from itk::Object | |
static bool | GetGlobalWarningDisplay () |
static void | GlobalWarningDisplayOff () |
static void | GlobalWarningDisplayOn () |
static Pointer | New () |
static void | SetGlobalWarningDisplay (bool flag) |
Protected Types inherited from itk::LightObject | |
typedef int | InternalReferenceCountType |
Protected Attributes inherited from itk::LightObject | |
InternalReferenceCountType | m_ReferenceCount |
SimpleFastMutexLock | m_ReferenceCountLock |
typedef SmartPointer< const Self > itk::Statistics::MembershipFunctionBase< TVector >::ConstPointer |
Definition at line 65 of file itkMembershipFunctionBase.h.
typedef unsigned int itk::Statistics::MembershipFunctionBase< TVector >::MeasurementVectorSizeType |
Typedef for the length of each measurement vector
Definition at line 74 of file itkMembershipFunctionBase.h.
typedef TVector itk::Statistics::MembershipFunctionBase< TVector >::MeasurementVectorType |
MeasurementVector typedef support
Definition at line 68 of file itkMembershipFunctionBase.h.
typedef SmartPointer< Self > itk::Statistics::MembershipFunctionBase< TVector >::Pointer |
Definition at line 64 of file itkMembershipFunctionBase.h.
typedef MembershipFunctionBase itk::Statistics::MembershipFunctionBase< TVector >::Self |
Standard class typedefs
Definition at line 62 of file itkMembershipFunctionBase.h.
typedef FunctionBase< TVector, double > itk::Statistics::MembershipFunctionBase< TVector >::Superclass |
Definition at line 63 of file itkMembershipFunctionBase.h.
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inlineprotected |
Definition at line 128 of file itkMembershipFunctionBase.h.
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inlineprotectedvirtual |
Definition at line 134 of file itkMembershipFunctionBase.h.
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private |
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pure virtual |
Method to get membership score (discriminant score) of an entity or measurement. Evaluate() maps from a vector measurement type to a real number.
Implements itk::FunctionBase< TVector, double >.
Implemented in itk::Statistics::MahalanobisDistanceMembershipFunction< TVector >, itk::Statistics::GaussianMembershipFunction< TMeasurementVector >, and itk::Statistics::DistanceToCentroidMembershipFunction< TVector >.
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virtual |
Get the length of the measurement vector
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virtual |
Standard macros
Reimplemented from itk::FunctionBase< TVector, double >.
Reimplemented in itk::Statistics::MahalanobisDistanceMembershipFunction< TVector >, itk::Statistics::GaussianMembershipFunction< TMeasurementVector >, and itk::Statistics::DistanceToCentroidMembershipFunction< TVector >.
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private |
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inlineprotectedvirtual |
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::Object.
Definition at line 136 of file itkMembershipFunctionBase.h.
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inlinevirtual |
Set the length of the measurement vector. If this membership function is templated over a vector type that can be resized, the new size is set. If the vector type has a fixed size and an attempt is made to change its size, an exception is thrown. Subclasses may have to override this method if a change in vector size requires invalidating other instance variables, e.g. covariance matrices, mean vectors, etc.
Definition at line 88 of file itkMembershipFunctionBase.h.
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private |
Definition at line 147 of file itkMembershipFunctionBase.h.