#include <itkNormalVectorDiffusionFunction.h>

Inheritance diagram for itk::NormalVectorDiffusionFunction< TSparseImageType >:

Collaboration diagram for itk::NormalVectorDiffusionFunction< TSparseImageType >:

Detailed Description

template<class TSparseImageType>
class itk::NormalVectorDiffusionFunction< TSparseImageType >

This class defines all the necessary functionality for performing isotropic and anisotropic diffusion operations on vector neighborhoods from a sparse image.

: This class implements the actual computations for performing isotropic and anisotropic diffusion operations on a neighborhood of unit length vectors. Moreover, this processing is intrinsic to a manifold as specified by the ManifoldNormal member variables in the nodes of the sparse image.

: Since the only difference between isotropic and anisotropic diffusion is the exectution of 1 extra line of code, we have implemented both in this class and made the choice between the two depend on a parameter (see below).

PARAMETERS: The choice between is isotropic/anisotropic diffusion is made by the parameter NormalProcessType. A value of 0 corresponds to isotropic diffusion whereas a value of 1 corresponds to anisotropic diffusion. If anisotropic diffusion is chosen, the parameter ConductanceParameter should be set. This conductance parameter determines the level of feature preservation.

IMPORTANT: This class works on SparseImage neighborhoods. Before using this class please read the documentation for SparseImage. Also the documentation for ImplicitManifoldNormalVectorField class will be helpful in understanding how to use this class as a function object.

Definition at line 60 of file itkNormalVectorDiffusionFunction.h.

Public Types
typedef SmartPointer< const Self >	ConstPointer

typedef Superclass::FloatOffsetType	FloatOffsetType

typedef Superclass::IndexType	IndexType

typedef Superclass::NeighborhoodScalesType	NeighborhoodScalesType

typedef Superclass::NeighborhoodType	NeighborhoodType

typedef Superclass::NodeType	NodeType

typedef Superclass::NodeValueType	NodeValueType

typedef Superclass::NormalVectorType	NormalVectorType

typedef SmartPointer< Self >	Pointer

typedef Superclass::RadiusType	RadiusType

typedef NormalVectorDiffusionFunction	Self

typedef Superclass::SparseImageType	SparseImageType

typedef NormalVectorFunctionBase < TSparseImageType >	Superclass

typedef Superclass::TimeStepType	TimeStepType

Public Types inherited from itk::NormalVectorFunctionBase< TSparseImageType >
typedef SmartPointer< const Self >	ConstPointer

typedef Superclass::FloatOffsetType	FloatOffsetType

typedef Superclass::IndexType	IndexType

typedef Superclass::NeighborhoodType	NeighborhoodType

typedef SparseImageType::NodeType	NodeType

typedef NodeType::NodeValueType	NodeValueType

typedef NodeType::NodeDataType	NormalVectorType

typedef SmartPointer< Self >	Pointer

typedef Superclass::RadiusType	RadiusType

typedef NormalVectorFunctionBase	Self

typedef Superclass::SparseImageType	SparseImageType

typedef FiniteDifferenceSparseImageFunction < TSparseImageType >	Superclass

typedef Superclass::TimeStepType	TimeStepType

Public Types inherited from itk::FiniteDifferenceSparseImageFunction< TSparseImageType >
typedef SmartPointer< const Self >	ConstPointer

typedef Superclass::FloatOffsetType	FloatOffsetType

typedef SparseImageType::IndexType	IndexType

typedef Superclass::NeighborhoodType	NeighborhoodType

typedef NodeType::NodeDataType	NodeDataType

typedef SparseImageType::NodeType	NodeType

typedef Superclass::PixelType	PixelType

typedef SmartPointer< Self >	Pointer

typedef Superclass::RadiusType	RadiusType

typedef FiniteDifferenceSparseImageFunction	Self

typedef Superclass::ImageType	SparseImageType

typedef FiniteDifferenceFunction < TSparseImageType >	Superclass

typedef Superclass::TimeStepType	TimeStepType

Public Types inherited from itk::FiniteDifferenceFunction< TSparseImageType >
typedef SmartPointer< const Self >	ConstPointer

typedef ZeroFluxNeumannBoundaryCondition < ImageType >	DefaultBoundaryConditionType

typedef Vector< float, itkGetStaticConstMacro(ImageDimension) >	FloatOffsetType

typedef TSparseImageType	ImageType

typedef Vector< PixelRealType, itkGetStaticConstMacro(ImageDimension) >	NeighborhoodScalesType

typedef ConstNeighborhoodIterator < TSparseImageType, DefaultBoundaryConditionType >	NeighborhoodType

typedef double	PixelRealType

typedef ImageType::PixelType	PixelType

typedef SmartPointer< Self >	Pointer

typedef ConstNeighborhoodIterator < TSparseImageType > ::RadiusType	RadiusType

typedef FiniteDifferenceFunction	Self

typedef LightObject	Superclass

typedef double	TimeStepType

Public Types inherited from itk::LightObject
typedef SmartPointer< const Self >	ConstPointer

typedef SmartPointer< Self >	Pointer

typedef LightObject	Self

Public Member Functions
virtual NormalVectorType	ComputeSparseUpdate (NeighborhoodType &neighborhood, void *globalData, const FloatOffsetType &offset) const

virtual ::itk::LightObject::Pointer	CreateAnother (void) const

NodeValueType	GetConductanceParameter () const

NodeValueType	GetFluxStopConstant () const

virtual const char *	GetNameOfClass () const

int	GetNormalProcessType () const

virtual void	PrecomputeSparseUpdate (NeighborhoodType &it) const

void	SetNormalProcessType (int npt)


void	SetConductanceParameter (NodeValueType cp)

Public Member Functions inherited from itk::NormalVectorFunctionBase< TSparseImageType >
virtual TimeStepType	ComputeGlobalTimeStep (void *) const

TimeStepType	GetTimeStep () const

void	SetTimeStep (const TimeStepType &ts)

virtual void *	GetGlobalDataPointer () const

virtual void	ReleaseGlobalDataPointer (void *) const

Public Member Functions inherited from itk::FiniteDifferenceSparseImageFunction< TSparseImageType >
virtual PixelType	ComputeUpdate (const NeighborhoodType &, void *, const FloatOffsetType &)

Public Member Functions inherited from itk::FiniteDifferenceFunction< TSparseImageType >
const NeighborhoodScalesType	ComputeNeighborhoodScales () const

const RadiusType &	GetRadius () const

void	GetScaleCoefficients (PixelRealType vals[ImageDimension]) const

virtual void	InitializeIteration ()

void	SetRadius (const RadiusType &r)

void	SetScaleCoefficients (PixelRealType vals[ImageDimension])

Public Member Functions inherited from itk::LightObject
virtual void	Delete ()

virtual int	GetReferenceCount () const

	itkCloneMacro (Self)

void	Print (std::ostream &os, Indent indent=0) const

virtual void	Register () const

virtual void	SetReferenceCount (int)

virtual void	UnRegister () const

Static Public Member Functions
static Pointer	New ()

Static Public Attributes
static const unsigned int	ImageDimension = Superclass::ImageDimension

Static Public Attributes inherited from itk::NormalVectorFunctionBase< TSparseImageType >
static const unsigned int	ImageDimension = Superclass::ImageDimension

Static Public Attributes inherited from itk::FiniteDifferenceSparseImageFunction< TSparseImageType >
static const unsigned int	ImageDimension = Superclass::ImageDimension

Static Public Attributes inherited from itk::FiniteDifferenceFunction< TSparseImageType >
static const unsigned int	ImageDimension

Protected Member Functions
	NormalVectorDiffusionFunction ()

void	PrintSelf (std::ostream &os, Indent indent) const

	~NormalVectorDiffusionFunction ()


NodeValueType	FluxStopFunction (const NodeValueType v) const

Protected Member Functions inherited from itk::NormalVectorFunctionBase< TSparseImageType >
	NormalVectorFunctionBase ()

	~NormalVectorFunctionBase ()

Protected Member Functions inherited from itk::FiniteDifferenceSparseImageFunction< TSparseImageType >
	FiniteDifferenceSparseImageFunction ()

	~FiniteDifferenceSparseImageFunction ()

Protected Member Functions inherited from itk::FiniteDifferenceFunction< TSparseImageType >
	FiniteDifferenceFunction ()

void	PrintSelf (std::ostream &os, Indent indent) const

	~FiniteDifferenceFunction ()

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
	NormalVectorDiffusionFunction (const Self &)

void	operator= (const Self &)

Private Attributes
NodeValueType	m_ConductanceParameter

NodeValueType	m_FluxStopConstant

int	m_NormalProcessType

Additional Inherited Members
Protected Types inherited from itk::LightObject
typedef int	InternalReferenceCountType

Protected Attributes inherited from itk::FiniteDifferenceFunction< TSparseImageType >
RadiusType	m_Radius

PixelRealType	m_ScaleCoefficients [ImageDimension]