#include <itkParallelSparseFieldLevelSetImageFilter.h>

Inheritance diagram for itk::ParallelSparseFieldLevelSetImageFilter< TInputImage, TOutputImage >:

Collaboration diagram for itk::ParallelSparseFieldLevelSetImageFilter< TInputImage, TOutputImage >:

Detailed Description

template<class TInputImage, class TOutputImage>
class itk::ParallelSparseFieldLevelSetImageFilter< TInputImage, TOutputImage >

This class implements a finite difference partial differential equation solver for evolving surfaces embedded in volumes as level-sets.

: The ``sparse field'' approach to the level-set model is a logical extension of the classical narrow band technique, which seeks to minimize computational effort by restricting calculations to those pixels in a region of interest around the moving surface (the -level curve). The sparse field method uses a narrow band that is exactly the width needed to calculate changes on the level curve for the next time step. Because the band of grid points under consideration is so sparse, this approach has several advantages: the algorithm does exactly the number of calculations needed to determine the next position of the -level curve, and the distance transform around the level curve can be recomputed at each iteration.

: The sparse field algorithm works by constructing a linked list of indices that are adjacent to the -level set. These indices are called the ``active set''. The values at these active set indices define the position of the -level curve. The active set indices are shifted to follow the distance transform embedding of the -level curve as their values move in and out of a fixed numerical range about . In this way, the active set is maintained as only those pixels adjacent to the evolving surface. Calculations are then done only at indices contained in the active set.

: The city-block neighborhoods of the active set indices are maintained as separate lists called ``layers''. At each iteration, the values at the layers are reinitialized as the distance transform from the active set. The number of layers can be adjusted according to the footprint needed for the calculations on the level curve.

: Briefly, the sparse field solver algorithm is as follows:

For each active layer index : Compute the change at $u_{x_j}$ , the grid point in the embedding, based on local geometry and external forces and using a stable numerical scheme.

For each active layer index , add the change to the grid point value and redefine the active set indices and those of its layers based on any value changes which have moved outside of the numerical range allowed for the active set.

Starting with the first layers adjacent to the active set and moving outwards, reconstruct the distance transform by setting values in the layers according to their neighbors. At the very outer layers, add or remove indices which have come into or moved out of the sparse field.

HOW TO USE THIS CLASS: Typically, this class should be subclassed with additional functionality for specific applications. It is possible, however to use this solver as a filter directly by instantiating it and supplying it with an appropriate LevelSetFunction object via the SetDifferenceFunction method. See the subclasses and their associated documentation for more information on using this class. Also see the FiniteDifferenceImageFilter documentation for a general overview of this class of solvers.

INPUTS: This filter takes an itk::Image as input. The appropriate type of input image is entirely determined by the application. As a rule, however, the input type is immediately converted to the output type before processing. This is because the input is not assumed to be a real value type and must be converted to signed, real values for the calculations. The input values will also be shifted by the isosurface value so that the algorithm only needs to consider the zero level set.

OUTPUTS: The output of the filter is the distance transform embedding of the isosurface as the zero level set. Values outside the surface will be negative and values inside the surface will be positive. The distance transform only holds for those indices in layers around the active layer. Elsewhere, the values are a fixed positive or negative that is one greater than the layer of greatest magnitude. In other words, if there are three layers, then inside values increase only to 4.0 and outside values only to -4.0.

PARAMETERS: The NumberOfLayers parameter controls the number of layers inside and outside of the active set (see description above). The sparse field will contain 2*NumberOfLayers+1 lists of indices: the active set and city block neighbors inside and outside the active set. It is important to specify enough layers to cover the footprint of your calculations. Curvature calculations in three dimensions, for example, require 3 layers. In two dimensions, a minimum of 2 layers is probably required. Higher order derivatives and other geometrical measures may require more layers. If too few layers are specified, then the calculations will pull values from the background, which may consist of arbitrary or random values.

: The IsoSurfaceValue indicates which value in the input represents the interface of interest. By default, this value is zero. When the solver initializes, it will subtract the IsoSurfaceValue from all values, in the input, shifting the isosurface of interest to zero in the output.

IMPORTANT!: Read the documentation for FiniteDifferenceImageFilter before attempting to use this filter. The solver requires that you specify a FiniteDifferenceFunction to use for calculations. This is set using the method SetDifferenceFunction in the parent class.

REFERENCES: Whitaker, Ross. A Level-Set Approach to 3D Reconstruction from Range Data. International Journal of Computer Vision. V. 29 No. 3, 203-231. 1998.

: Sethian, J.A. Level Set Methods. Cambridge University Press. 1996.

Definition at line 249 of file itkParallelSparseFieldLevelSetImageFilter.h.

Classes
struct	ParallelSparseFieldLevelSetThreadStruct

struct	ThreadData

Public Types
typedef SmartPointer< const Self >	ConstPointer

typedef Superclass::FiniteDifferenceFunctionType	FiniteDifferenceFunctionType

typedef OutputImageType::IndexType	IndexType

typedef TInputImage	InputImageType

typedef std::vector < LayerPointerType >	LayerListType

typedef ObjectStore < LayerNodeType >	LayerNodeStorageType

typedef ParallelSparseFieldLevelSetNode < IndexType >	LayerNodeType

typedef LayerType::Pointer	LayerPointerType

typedef SparseFieldLayer < LayerNodeType >	LayerType

typedef Superclass::NeighborhoodScalesType	NeighborhoodScalesType

typedef Offset < itkGetStaticConstMacro(ImageDimension) >	OffsetType

typedef TOutputImage	OutputImageType

typedef OutputImageType::PixelType	PixelType

typedef SmartPointer< Self >	Pointer

typedef Superclass::RadiusType	RadiusType

typedef ParallelSparseFieldLevelSetImageFilter	Self

typedef Image< StatusType, itkGetStaticConstMacro(ImageDimension) >	StatusImageType

typedef signed char	StatusType

typedef FiniteDifferenceImageFilter < TInputImage, TOutputImage >	Superclass

typedef OutputImageType::RegionType	ThreadRegionType

typedef Superclass::TimeStepType	TimeStepType

typedef OutputImageType::ValueType	ValueType

Public Types inherited from itk::FiniteDifferenceImageFilter< TInputImage, TOutputImage >
typedef SmartPointer< const Self >	ConstPointer

typedef FiniteDifferenceFunction < TOutputImage >	FiniteDifferenceFunctionType

typedef TInputImage	InputImageType

typedef TInputImage::PixelType	InputPixelType

typedef NumericTraits < InputPixelType >::ValueType	InputPixelValueType

typedef FiniteDifferenceFunctionType::NeighborhoodScalesType	NeighborhoodScalesType

typedef TOutputImage	OutputImageType

typedef TOutputImage::PixelType	OutputPixelType

typedef NumericTraits < OutputPixelType >::ValueType	OutputPixelValueType

typedef OutputPixelType	PixelType

typedef SmartPointer< Self >	Pointer

typedef FiniteDifferenceFunctionType::RadiusType	RadiusType

typedef FiniteDifferenceImageFilter	Self

typedef InPlaceImageFilter < TInputImage, TOutputImage >	Superclass

typedef FiniteDifferenceFunctionType::TimeStepType	TimeStepType

Public Types inherited from itk::InPlaceImageFilter< TInputImage, TOutputImage >
typedef SmartPointer< const Self >	ConstPointer

typedef InputImageType::ConstPointer	InputImageConstPointer

typedef InputImageType::PixelType	InputImagePixelType

typedef InputImageType::Pointer	InputImagePointer

typedef InputImageType::RegionType	InputImageRegionType

typedef TInputImage	InputImageType

typedef Superclass::OutputImagePixelType	OutputImagePixelType

typedef Superclass::OutputImagePointer	OutputImagePointer

typedef Superclass::OutputImageRegionType	OutputImageRegionType

typedef Superclass::OutputImageType	OutputImageType

typedef SmartPointer< Self >	Pointer

typedef InPlaceImageFilter	Self

typedef ImageToImageFilter < TInputImage, TOutputImage >	Superclass

Public Types inherited from itk::ImageToImageFilter< TInputImage, TOutputImage >
typedef SmartPointer< const Self >	ConstPointer

typedef InputImageType::ConstPointer	InputImageConstPointer

typedef InputImageType::PixelType	InputImagePixelType

typedef InputImageType::Pointer	InputImagePointer

typedef InputImageType::RegionType	InputImageRegionType

typedef TInputImage	InputImageType

typedef Superclass::OutputImagePixelType	OutputImagePixelType

typedef Superclass::OutputImageRegionType	OutputImageRegionType

typedef SmartPointer< Self >	Pointer

typedef ImageToImageFilter	Self

typedef ImageSource< TOutputImage >	Superclass

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

typedef Superclass::DataObjectIdentifierType	DataObjectIdentifierType

typedef DataObject::Pointer	DataObjectPointer

typedef Superclass::DataObjectPointerArraySizeType	DataObjectPointerArraySizeType

typedef OutputImageType::PixelType	OutputImagePixelType

typedef OutputImageType::Pointer	OutputImagePointer

typedef OutputImageType::RegionType	OutputImageRegionType

typedef TOutputImage	OutputImageType

typedef SmartPointer< Self >	Pointer

typedef ImageSource	Self

typedef ProcessObject	Superclass

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

typedef DataObject::DataObjectIdentifierType	DataObjectIdentifierType

typedef DataObject::Pointer	DataObjectPointer

typedef std::vector < DataObjectPointer >	DataObjectPointerArray

typedef DataObjectPointerArray::size_type	DataObjectPointerArraySizeType

typedef std::vector < DataObjectIdentifierType >	NameArray

typedef SmartPointer< Self >	Pointer

typedef ProcessObject	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 ::itk::LightObject::Pointer	CreateAnother (void) const

LayerPointerType	GetActiveListForIndex (const IndexType index)

virtual const char *	GetNameOfClass () const

	typedef (Concept::EqualityComparable< PixelType >) OutputEqualityComparableCheck

	typedef (Concept::Convertible< double, PixelType >) DoubleConvertibleToOutputCheck

	typedef (Concept::OStreamWritable< PixelType >) OutputOStreamWritableCheck


virtual void	SetNumberOfLayers (StatusType _arg)

virtual StatusType	GetNumberOfLayers () const


virtual void	SetIsoSurfaceValue (ValueType _arg)

virtual ValueType	GetIsoSurfaceValue () const

Public Member Functions inherited from itk::FiniteDifferenceImageFilter< TInputImage, TOutputImage >
virtual const FiniteDifferenceFunctionType::Pointer &	GetDifferenceFunction () const

virtual const IdentifierType &	GetElapsedIterations ()

virtual bool	GetIsInitialized ()

virtual void	SetDifferenceFunction (FiniteDifferenceFunctionType *_arg)

virtual void	SetIsInitialized (bool _arg)

void	SetStateToInitialized ()

void	SetStateToUninitialized ()

virtual void	SetNumberOfIterations (IdentifierType _arg)

virtual const IdentifierType &	GetNumberOfIterations ()

virtual void	SetUseImageSpacing (bool _arg)

virtual void	UseImageSpacingOn ()

virtual void	UseImageSpacingOff ()

virtual const bool &	GetUseImageSpacing ()

virtual void	SetMaximumRMSError (double _arg)

virtual const double &	GetMaximumRMSError ()

virtual void	SetRMSChange (double _arg)

virtual const double &	GetRMSChange ()

virtual void	SetManualReinitialization (bool _arg)

virtual const bool &	GetManualReinitialization ()

virtual void	ManualReinitializationOn ()

virtual void	ManualReinitializationOff ()

Public Member Functions inherited from itk::InPlaceImageFilter< TInputImage, TOutputImage >
virtual bool	CanRunInPlace () const

virtual void	SetInPlace (bool _arg)

virtual bool	GetInPlace () const

virtual void	InPlaceOn ()

virtual void	InPlaceOff ()

Public Member Functions inherited from itk::ImageToImageFilter< TInputImage, TOutputImage >
const InputImageType *	GetInput (void) const

const InputImageType *	GetInput (unsigned int idx) const

virtual void	PopBackInput ()

virtual void	PopFrontInput ()

virtual void	PushBackInput (const InputImageType *image)

virtual void	PushFrontInput (const InputImageType *image)

virtual void	SetInput (const InputImageType *image)

virtual void	SetInput (unsigned int, const TInputImage *image)

virtual void	SetCoordinateTolerance (double _arg)

virtual double	GetCoordinateTolerance () const

virtual void	SetDirectionTolerance (double _arg)

virtual double	GetDirectionTolerance () const

Public Member Functions inherited from itk::ImageSource< TOutputImage >
OutputImageType *	GetOutput (unsigned int idx)

virtual void	GraftNthOutput (unsigned int idx, DataObject *output)

virtual void	GraftOutput (DataObject *output)

virtual void	GraftOutput (const DataObjectIdentifierType &key, DataObject *output)

OutputImageType *	GetOutput (void)

const OutputImageType *	GetOutput (void) const

virtual ProcessObject::DataObjectPointer	MakeOutput (ProcessObject::DataObjectPointerArraySizeType idx)

Public Member Functions inherited from itk::ProcessObject
virtual void	AbortGenerateDataOff ()

virtual void	AbortGenerateDataOn ()

virtual void	EnlargeOutputRequestedRegion (DataObject *)

virtual const bool &	GetAbortGenerateData ()

NameArray	GetInputNames () const

MultiThreader *	GetMultiThreader () const

DataObjectPointerArraySizeType	GetNumberOfIndexedInputs () const

DataObjectPointerArraySizeType	GetNumberOfInputs () const

DataObjectPointerArraySizeType	GetNumberOfOutputs () const

virtual DataObjectPointerArraySizeType	GetNumberOfValidRequiredInputs () const

NameArray	GetOutputNames () const

virtual const float &	GetProgress ()

NameArray	GetRequiredInputNames () const

bool	HasInput (const DataObjectIdentifierType &key) const

bool	HasOutput (const DataObjectIdentifierType &key) const

virtual DataObjectPointer	MakeOutput (const DataObjectIdentifierType &)

virtual void	PrepareOutputs ()

virtual void	PropagateRequestedRegion (DataObject *output)

virtual void	ResetPipeline ()

virtual void	SetAbortGenerateData (bool _arg)

virtual void	SetProgress (float _arg)

virtual void	Update ()

virtual void	UpdateLargestPossibleRegion ()

virtual void	UpdateOutputData (DataObject *output)

virtual void	UpdateOutputInformation ()

void	UpdateProgress (float amount)

DataObjectPointerArray	GetInputs ()

DataObjectPointerArray	GetOutputs ()

DataObjectPointerArray	GetIndexedInputs ()

DataObjectPointerArray	GetIndexedOutputs ()

DataObjectPointerArraySizeType	GetNumberOfIndexedOutputs () const

virtual void	SetReleaseDataFlag (bool flag)

virtual bool	GetReleaseDataFlag () const

void	ReleaseDataFlagOn ()

void	ReleaseDataFlagOff ()

virtual void	SetReleaseDataBeforeUpdateFlag (bool _arg)

virtual const bool &	GetReleaseDataBeforeUpdateFlag ()

virtual void	ReleaseDataBeforeUpdateFlagOn ()

virtual void	ReleaseDataBeforeUpdateFlagOff ()

virtual void	SetNumberOfThreads (ThreadIdType _arg)

virtual const ThreadIdType &	GetNumberOfThreads ()

Public Member Functions inherited from itk::Object
unsigned long	AddObserver (const EventObject &event, Command *)

unsigned long	AddObserver (const EventObject &event, Command *) const

virtual void	DebugOff () const

virtual void	DebugOn () const

Command *	GetCommand (unsigned long tag)

bool	GetDebug () const

MetaDataDictionary &	GetMetaDataDictionary (void)

const MetaDataDictionary &	GetMetaDataDictionary (void) const

virtual ModifiedTimeType	GetMTime () const

virtual const TimeStamp &	GetTimeStamp () const

bool	HasObserver (const EventObject &event) const

void	InvokeEvent (const EventObject &)

void	InvokeEvent (const EventObject &) const

virtual void	Modified () const

virtual void	Register () const

void	RemoveAllObservers ()

void	RemoveObserver (unsigned long tag)

void	SetDebug (bool debugFlag) const

void	SetMetaDataDictionary (const MetaDataDictionary &rhs)

virtual void	SetReferenceCount (int)

virtual void	UnRegister () const

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

Static Public Member Functions
static Pointer	New ()

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

Static Public Attributes inherited from itk::FiniteDifferenceImageFilter< TInputImage, TOutputImage >
static const unsigned int	ImageDimension = OutputImageType::ImageDimension

Static Public Attributes inherited from itk::InPlaceImageFilter< TInputImage, TOutputImage >
static const unsigned int	InputImageDimension = TInputImage::ImageDimension

static const unsigned int	OutputImageDimension = TOutputImage::ImageDimension

Static Public Attributes inherited from itk::ImageToImageFilter< TInputImage, TOutputImage >
static const unsigned int	InputImageDimension = TInputImage::ImageDimension

static const unsigned int	OutputImageDimension = TOutputImage::ImageDimension

Static Public Attributes inherited from itk::ImageSource< TOutputImage >
static const unsigned int	OutputImageDimension = TOutputImage::ImageDimension

Protected Member Functions
void	AllocateUpdateBuffer ()

void	ApplyUpdate (const TimeStepType &)

TimeStepType	CalculateChange ()

virtual void	CheckLoadBalance ()

void	ClearInterNeighborNodeTransferBufferLayers (ThreadIdType ThreadId, unsigned int InOrOut, unsigned int BufferLayerNumber)

void	ClearList (ThreadIdType ThreadId, LayerPointerType ListPtr)

void	ComputeInitialThreadBoundaries ()

void	ConstructActiveLayer ()

void	ConstructLayer (const StatusType &from, const StatusType &to)

void	CopyInputToOutput ()

void	CopyInsertInterNeighborNodeTransferBufferLayers (ThreadIdType ThreadId, LayerPointerType InputList, unsigned int InOrOut, unsigned int BufferLayerNumber)

void	CopyInsertList (ThreadIdType ThreadId, LayerPointerType FromListPtr, LayerPointerType ToListPtr)

void	DeallocateData ()

virtual void	GenerateData ()

unsigned int	GetThreadNumber (unsigned int splitAxisValue)

void	GetThreadRegionSplitByBoundary (ThreadIdType ThreadId, ThreadRegionType &ThreadRegion)

void	GetThreadRegionSplitUniformly (ThreadIdType ThreadId, ThreadRegionType &ThreadRegion)

void	Initialize ()

void	InitializeActiveLayerValues ()

virtual void	InitializeBackgroundPixels ()

void	Iterate ()

	ParallelSparseFieldLevelSetImageFilter ()

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

void	ProcessStatusList (LayerType *InputList, const StatusType &ChangeToStatus, const StatusType &SearchForStatus, ThreadIdType ThreadId)

void	PropagateAllLayerValues ()

void	PropagateLayerValues (const StatusType &from, const StatusType &to, const StatusType &promote, unsigned int InOrOut)

void	SignalNeighbor (unsigned int SemaphoreArrayNumber, ThreadIdType ThreadId)

void	SignalNeighborsAndWait (ThreadIdType ThreadId)

void	ThreadedAllocateData (ThreadIdType ThreadId)

virtual void	ThreadedApplyUpdate (const TimeStepType &dt, ThreadIdType ThreadId)

virtual TimeStepType	ThreadedCalculateChange (ThreadIdType ThreadId)

virtual ValueType	ThreadedCalculateUpdateValue (const ThreadIdType, const IndexType, const TimeStepType &dt, const ValueType &value, const ValueType &change)

void	ThreadedInitializeData (ThreadIdType ThreadId, const ThreadRegionType &ThreadRegion)

virtual void	ThreadedInitializeIteration (ThreadIdType ThreadId)

virtual void	ThreadedLoadBalance (ThreadIdType ThreadId)

void	ThreadedPostProcessOutput (const ThreadRegionType &regionToProcess)

void	ThreadedProcessFirstLayerStatusLists (unsigned int InputLayerNumber, unsigned int OutputLayerNumber, const StatusType &SearchForStatus, unsigned int InOrOut, unsigned int BufferLayerNumber, ThreadIdType ThreadId)

void	ThreadedProcessOutsideList (unsigned int InputLayerNumber, const StatusType &ChangeToStatus, unsigned int InOrOut, unsigned int BufferLayerNumber, ThreadIdType ThreadId)

virtual void	ThreadedProcessPixelEnteringActiveLayer (const IndexType &, const ValueType &, ThreadIdType)

void	ThreadedProcessStatusList (unsigned int InputLayerNumber, unsigned int OutputLayerNumber, const StatusType &ChangeToStatus, const StatusType &SearchForStatus, unsigned int InOrOut, unsigned int BufferLayerNumber, ThreadIdType ThreadId)

void	ThreadedPropagateLayerValues (const StatusType &from, const StatusType &to, const StatusType &promote, unsigned int InorOut, ThreadIdType ThreadId)

void	ThreadedUpdateActiveLayerValues (const TimeStepType &dt, LayerType StatusUpList, LayerType StatusDownList, ThreadIdType ThreadId)

void	WaitForAll ()

void	WaitForNeighbor (unsigned int SemaphoreArrayNumber, ThreadIdType ThreadId)

	~ParallelSparseFieldLevelSetImageFilter ()

Protected Member Functions inherited from itk::FiniteDifferenceImageFilter< TInputImage, TOutputImage >
	FiniteDifferenceImageFilter ()

virtual void	GenerateInputRequestedRegion ()

virtual bool	Halt ()

virtual void	InitializeIteration ()

virtual void	PostProcessOutput ()

virtual TimeStepType	ResolveTimeStep (const std::vector< TimeStepType > &timeStepList, const std::vector< bool > &valid) const

virtual void	SetElapsedIterations (IdentifierType _arg)

virtual bool	ThreadedHalt (void *)

virtual	~FiniteDifferenceImageFilter ()

Protected Member Functions inherited from itk::InPlaceImageFilter< TInputImage, TOutputImage >
virtual void	AllocateOutputs ()

virtual bool	GetRunningInPlace () const

	InPlaceImageFilter ()

virtual void	ReleaseInputs ()

	~InPlaceImageFilter ()

Protected Member Functions inherited from itk::ImageToImageFilter< TInputImage, TOutputImage >
virtual void	CallCopyInputRegionToOutputRegion (OutputImageRegionType &destRegion, const InputImageRegionType &srcRegion)

virtual void	CallCopyOutputRegionToInputRegion (InputImageRegionType &destRegion, const OutputImageRegionType &srcRegion)

	ImageToImageFilter ()

virtual void	VerifyInputInformation ()

	~ImageToImageFilter ()

void	PushBackInput (const DataObject *input)

void	PushFrontInput (const DataObject *input)

Protected Member Functions inherited from itk::ImageSource< TOutputImage >
virtual void	AfterThreadedGenerateData ()

virtual void	BeforeThreadedGenerateData ()

virtual const ImageRegionSplitterBase *	GetImageRegionSplitter (void) const

	ImageSource ()

virtual unsigned int	SplitRequestedRegion (unsigned int i, unsigned int num, OutputImageRegionType &splitRegion)

virtual void	ThreadedGenerateData (const OutputImageRegionType &outputRegionForThread, ThreadIdType threadId)

virtual	~ImageSource ()

Protected Member Functions inherited from itk::ProcessObject
virtual void	AddInput (DataObject *input)

virtual void	AddOutput (DataObject *output)

virtual void	CacheInputReleaseDataFlags ()

virtual void	GenerateOutputInformation ()

virtual void	GenerateOutputRequestedRegion (DataObject *output)

virtual const DataObjectPointerArraySizeType &	GetNumberOfRequiredOutputs ()

bool	IsIndexedInputName (const DataObjectIdentifierType &) const

bool	IsIndexedOutputName (const DataObjectIdentifierType &) const

	itkLegacyMacro (virtual void RemoveOutput(DataObject *output))

	itkLegacyMacro (void SetNumberOfOutputs(DataObjectPointerArraySizeType num))

	itkLegacyMacro (virtual void RemoveInput(DataObject *input))

	itkLegacyMacro (void SetNumberOfInputs(DataObjectPointerArraySizeType num))

DataObjectPointerArraySizeType	MakeIndexFromInputName (const DataObjectIdentifierType &name) const

DataObjectPointerArraySizeType	MakeIndexFromOutputName (const DataObjectIdentifierType &name) const

DataObjectIdentifierType	MakeNameFromInputIndex (DataObjectPointerArraySizeType idx) const

DataObjectIdentifierType	MakeNameFromOutputIndex (DataObjectPointerArraySizeType idx) const

	ProcessObject ()

virtual void	PropagateResetPipeline ()

virtual void	RemoveInput (const DataObjectIdentifierType &key)

virtual void	RemoveInput (DataObjectPointerArraySizeType)

virtual void	RemoveOutput (const DataObjectIdentifierType &key)

virtual void	RemoveOutput (DataObjectPointerArraySizeType idx)

virtual void	RestoreInputReleaseDataFlags ()

virtual void	SetInput (const DataObjectIdentifierType &key, DataObject *input)

virtual void	SetNthInput (DataObjectPointerArraySizeType num, DataObject *input)

virtual void	SetNthOutput (DataObjectPointerArraySizeType num, DataObject *output)

void	SetNumberOfIndexedInputs (DataObjectPointerArraySizeType num)

void	SetNumberOfIndexedOutputs (DataObjectPointerArraySizeType num)

virtual void	SetNumberOfRequiredOutputs (DataObjectPointerArraySizeType _arg)

virtual void	SetOutput (const DataObjectIdentifierType &key, DataObject *output)

virtual void	SetPrimaryInput (DataObject *input)

virtual void	SetPrimaryOutput (DataObject *output)

virtual void	VerifyPreconditions ()

	~ProcessObject ()

DataObject *	GetInput (const DataObjectIdentifierType &key)

const DataObject *	GetInput (const DataObjectIdentifierType &key) const

DataObject *	GetInput (DataObjectPointerArraySizeType idx)

const DataObject *	GetInput (DataObjectPointerArraySizeType idx) const

DataObject *	GetPrimaryInput ()

const DataObject *	GetPrimaryInput () const

virtual void	SetPrimaryInputName (const DataObjectIdentifierType &key)

virtual const char *	GetPrimaryInputName (void) const

virtual void	SetNumberOfRequiredInputs (DataObjectPointerArraySizeType)

virtual const DataObjectPointerArraySizeType &	GetNumberOfRequiredInputs ()

bool	AddRequiredInputName (const DataObjectIdentifierType &)

bool	AddRequiredInputName (const DataObjectIdentifierType &, DataObjectPointerArraySizeType idx)

bool	RemoveRequiredInputName (const DataObjectIdentifierType &)

bool	IsRequiredInputName (const DataObjectIdentifierType &) const

void	SetRequiredInputNames (const NameArray &)

DataObject *	GetOutput (const DataObjectIdentifierType &key)

const DataObject *	GetOutput (const DataObjectIdentifierType &key) const

virtual void	SetPrimaryOutputName (const DataObjectIdentifierType &key)

virtual const char *	GetPrimaryOutputName (void) const

DataObject *	GetOutput (DataObjectPointerArraySizeType idx)

const DataObject *	GetOutput (DataObjectPointerArraySizeType idx) const

DataObject *	GetPrimaryOutput ()

const DataObject *	GetPrimaryOutput () const

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 ()

Static Protected Member Functions
static ITK_THREAD_RETURN_TYPE	IterateThreaderCallback (void *arg)

Protected Attributes
Barrier::Pointer	m_Barrier

unsigned int *	m_Boundary

bool	m_BoundaryChanged

double	m_ConstantGradientValue

ThreadData *	m_Data

int *	m_GlobalZHistogram

bool	m_InterpolateSurfaceLocation

ValueType	m_IsoSurfaceValue

LayerNodeStorageType::Pointer	m_LayerNodeStore

LayerListType	m_Layers

unsigned int *	m_MapZToThreadNumber

ParallelSparseFieldCityBlockNeighborList < NeighborhoodIterator < OutputImageType > >	m_NeighborList

StatusType	m_NumberOfLayers

ThreadIdType	m_NumOfThreads

OutputImageType::Pointer	m_OutputImage

OutputImageType::Pointer	m_OutputImageTemp

OutputImageType::Pointer	m_ShiftedImage

unsigned int	m_SplitAxis

StatusImageType::Pointer	m_StatusImage

StatusImageType::Pointer	m_StatusImageTemp

bool	m_Stop

int *	m_ZCumulativeFrequency

unsigned int	m_ZSize

Protected Attributes inherited from itk::FiniteDifferenceImageFilter< TInputImage, TOutputImage >
IdentifierType	m_ElapsedIterations

bool	m_IsInitialized

bool	m_ManualReinitialization

double	m_MaximumRMSError

IdentifierType	m_NumberOfIterations

double	m_RMSChange

Static Protected Attributes
static StatusType	m_StatusActiveChangingDown

static StatusType	m_StatusActiveChangingUp

static StatusType	m_StatusBoundaryPixel

static StatusType	m_StatusChanging

static StatusType	m_StatusNull

static ValueType	m_ValueOne

static ValueType	m_ValueZero

Private Member Functions
void	operator= (const Self &)

	ParallelSparseFieldLevelSetImageFilter (const Self &)

Private Attributes
bool	m_BoundsCheckingActive

Additional Inherited Members
Protected Types inherited from itk::ImageToImageFilter< TInputImage, TOutputImage >
typedef ImageToImageFilterDetail::ImageRegionCopier < itkGetStaticConstMacro(OutputImageDimension), itkGetStaticConstMacro(InputImageDimension) >	InputToOutputRegionCopierType

typedef ImageToImageFilterDetail::ImageRegionCopier < itkGetStaticConstMacro(InputImageDimension), itkGetStaticConstMacro(OutputImageDimension) >	OutputToInputRegionCopierType