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

#include <itkNormalVectorDiffusionFunction.h>

Inheritance diagram for itk::NormalVectorDiffusionFunction< TSparseImageType >:

Collaboration diagram for itk::NormalVectorDiffusionFunction< TSparseImageType >:

List of all members.

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 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)
Static Public Member Functions
static Pointer	New ()
Static Public Attributes
static const unsigned int	ImageDimension = Superclass::ImageDimension
Protected Member Functions
	NormalVectorDiffusionFunction ()
void	PrintSelf (std::ostream &os, Indent indent) const
	~NormalVectorDiffusionFunction ()

NodeValueType	FluxStopFunction (const NodeValueType v) const
Private Member Functions
	NormalVectorDiffusionFunction (const Self &)
void	operator= (const Self &)
Private Attributes
NodeValueType	m_ConductanceParameter
NodeValueType	m_FluxStopConstant
int	m_NormalProcessType

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.