#include <itkVectorThresholdSegmentationLevelSetFunction.h>

Inheritance diagram for itk::VectorThresholdSegmentationLevelSetFunction< TImageType, TFeatureImageType >:

Collaboration diagram for itk::VectorThresholdSegmentationLevelSetFunction< TImageType, TFeatureImageType >:

Public Types
typedef SmartPointer< const Self >	ConstPointer
typedef MahalanobisFunctionType::CovarianceMatrixType	CovarianceMatrixType
typedef FeatureImageType::PixelType	FeatureImagePixelType
typedef TFeatureImageType	FeatureImageType
typedef Superclass::FeatureScalarType	FeatureScalarType
typedef Superclass::ImageType	ImageType
typedef MahalanobisFunctionType::Pointer	MahalanobisFunctionPointer
typedef Statistics::MahalanobisDistanceMembershipFunction < FeatureScalarType >	MahalanobisFunctionType
typedef MahalanobisFunctionType::MeanVectorType	MeanVectorType
typedef SmartPointer< Self >	Pointer
typedef Superclass::RadiusType	RadiusType
typedef Superclass::ScalarValueType	ScalarValueType
typedef VectorThresholdSegmentationLevelSetFunction	Self
typedef SegmentationLevelSetFunction < TImageType, TFeatureImageType >	Superclass
Public Member Functions
virtual void	CalculateSpeedImage ()
virtual ::itk::LightObject::Pointer	CreateAnother (void) const
const CovarianceMatrixType &	GetCovariance () const
virtual const char *	GetNameOfClass () const
ScalarValueType	GetThreshold ()
virtual void	Initialize (const RadiusType &r)
void	SetCovariance (const CovarianceMatrixType &cov)
void	SetThreshold (ScalarValueType thr)

void	SetMean (const MeanVectorType &mean)
const MeanVectorType &	GetMean () const
Static Public Member Functions
static Pointer	New ()
Static Public Attributes
static const unsigned int	ImageDimension = Superclass::ImageDimension
static const unsigned int	NumberOfComponents = FeatureImagePixelType::Dimension
Protected Member Functions
void	operator= (const Self &)
void	PrintSelf (std::ostream &os, Indent indent) const
	VectorThresholdSegmentationLevelSetFunction ()
	VectorThresholdSegmentationLevelSetFunction (const Self &)
virtual	~VectorThresholdSegmentationLevelSetFunction ()
Protected Attributes
MahalanobisFunctionPointer	m_Mahalanobis
ScalarValueType	m_Threshold

Detailed Description

template<class TImageType, class TFeatureImageType>
class itk::VectorThresholdSegmentationLevelSetFunction< TImageType, TFeatureImageType >

This function is used in VectorThresholdSegmentationLevelSetImageFilter to segment structures in images based on the Mahalanobis distance.

CREDITS: This class was contributed to ITK by Stefan Lindenau http://www.itk.org/pipermail/insight-users/2003-December/005969.html

SegmentationLevelSetFunction is a subclass of the generic LevelSetFunction.: It useful for segmentations based on intensity values in an image. It works by constructing a speed term (feature image) with positive values inside an intensity window (between a low and high threshold) and negative values outside that intensity window. The evolving level set front will lock onto regions that are at the edges of the intensity window.

: Image is thresholded pixel by pixel using threshold according to the following formula.

: $f(x) = T - MahalanobisDistance(x)$