#include <itkContourExtractor2DImageFilter.h>

Inheritance diagram for itk::ContourExtractor2DImageFilter< TInputImage >:

Collaboration diagram for itk::ContourExtractor2DImageFilter< TInputImage >:

Detailed Description

template<class TInputImage>
class itk::ContourExtractor2DImageFilter< TInputImage >

Computes a list of PolyLineParametricPath objects from the contours in a 2D image.

Uses the "marching squares" method to compute a the iso-valued contours of the input 2D image for a given intensity value. Multiple outputs may be produced because an image can have multiple contours at a given level, so it is advised to call GetNumberOfIndexedOutputs() and GetOutput(n) to retrieve all of the contours. The contour value to be extracted can be set with SetContourValue(). Image intensities will be linearly interpolated to provide sub-pixel resolution for the output contours.

The marching squares algorithm is a special case of the marching cubes algorithm (Lorensen, William and Harvey E. Cline. Marching Cubes: A High Resolution 3D Surface Construction Algorithm. Computer Graphics (SIGGRAPH 87 Proceedings) 21(4) July 1987, p. 163-170). A simple explanation is available here: http://users.polytech.unice.fr/~lingrand/MarchingCubes/algo.html

There is a single ambiguous case in the marching squares algorithm: if a given 2x2-pixel square has two high-valued and two low-valued pixels, each pair diagonally adjacent. (Where high- and low-valued is with respect to the contour value sought.) In this case, either the high-valued pixels can be connected into the same "object" (where groups of pixels encircled by a given contour are considered an object), or the low-valued pixels can be connected. This is the "face connected" versus "face + vertex connected" (or 4- versus 4-connected) distinction: high-valued pixels most be treated as one, and low-valued as the other. By default, high-valued pixels are treated as "face-connected" and low-valued pixels are treated as "face + vertex" connected. To reverse this, call VertexConnectHighPixelsOn();

Outputs are not guaranteed to be closed paths: contours which intersect the image edge will be left open. All other paths will be closed. (The closed-ness of a path can be tested by checking whether the beginning point is the same as the end point.)

Produced paths are oriented. Following the path from beginning to end, image intensity values lower than the contour value are to the left of the path and intensity values grater than the contour value are to the right. In other words, the image gradient at a path segment is (approximately) in the direct of that segment rotated right by 90 degrees, because the image intensity values increase from left-to-right across the segment. This means that the generated contours will circle clockwise around "hills" of above-contour-value intensity, and counter-clockwise around "depressions" of below-contour-value intensity. This convention can be reversed by calling ReverseContourOrientationOn().

By default the input image's largest possible region will be processed; call SetRequestedRegion() to process a different region, or ClearRequestedRegion() to revert to the default value. Note that the requested regions are usually set on the output; however since paths have no notion of a "region", this must be set at the filter level.

This class was contributed to the Insight Journal by Zachary Pincus. http://hdl.handle.net/1926/165

See Also: Image; Path; PolyLineParametricPath

Wiki Examples:

All Examples

Extract contours from an image

Definition at line 96 of file itkContourExtractor2DImageFilter.h.

Classes
class	ContourType

struct	VertexHash

Public Types
typedef SmartPointer< const Self >	ConstPointer

typedef InputImageType::Pointer	InputImagePointer

typedef TInputImage	InputImageType

typedef InputImageType::IndexType	InputIndexType

typedef InputImageType::OffsetType	InputOffsetType

typedef InputImageType::PixelType	InputPixelType

typedef NumericTraits < InputPixelType >::RealType	InputRealType

typedef InputImageType::RegionType	InputRegionType

typedef OutputPathType::Pointer	OutputPathPointer

typedef PolyLineParametricPath< 2 >	OutputPathType

typedef SmartPointer< Self >	Pointer

typedef ContourExtractor2DImageFilter	Self

typedef ImageToPathFilter < InputImageType, OutputPathType >	Superclass

typedef VertexListType::ConstPointer	VertexListConstPointer

typedef OutputPathType::VertexListType	VertexListType

typedef OutputPathType::VertexType	VertexType

Public Types inherited from itk::ImageToPathFilter< TInputImage, PolyLineParametricPath< 2 > >
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 SmartPointer< Self >	Pointer

typedef ImageToPathFilter	Self

typedef PathSource < PolyLineParametricPath< 2 > >	Superclass

Public Types inherited from itk::PathSource< PolyLineParametricPath< 2 > >
typedef SmartPointer< const Self >	ConstPointer

typedef DataObject::Pointer	DataObjectPointer

typedef OutputPathType::IndexType	OutputPathIndexType

typedef OutputPathType::InputType	OutputPathInputType

typedef OutputPathType::OffsetType	OutputPathOffsetType

typedef OutputPathType::OutputType	OutputPathOutputType

typedef OutputPathType::Pointer	OutputPathPointer

typedef PolyLineParametricPath< 2 >	OutputPathType

typedef SmartPointer< Self >	Pointer

typedef PathSource	Self

typedef ProcessObject	Superclass

typedef ProcessObject::DataObjectPointerArraySizeType	DataObjectPointerArraySizeType

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
void	ClearRequestedRegion ()

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

virtual const char *	GetNameOfClass () const

virtual const InputRegionType &	GetRequestedRegion ()

void	SetRequestedRegion (const InputRegionType region)

	typedef (Concept::SameDimension< itkGetStaticConstMacro(InputImageDimension), 2 >) DimensionShouldBe2

	typedef (Concept::Comparable< InputPixelType >) InputPixelTypeComparable

	typedef (Concept::HasPixelTraits< InputPixelType >) InputHasPixelTraitsCheck

	typedef (Concept::HasNumericTraits< InputPixelType >) InputHasNumericTraitsCheck


virtual void	SetReverseContourOrientation (bool _arg)

virtual const bool &	GetReverseContourOrientation ()

virtual void	ReverseContourOrientationOn ()

virtual void	ReverseContourOrientationOff ()


virtual void	SetVertexConnectHighPixels (bool _arg)

virtual const bool &	GetVertexConnectHighPixels ()

virtual void	VertexConnectHighPixelsOn ()

virtual void	VertexConnectHighPixelsOff ()


virtual void	SetContourValue (InputRealType _arg)

virtual const InputRealType &	GetContourValue ()

Public Member Functions inherited from itk::ImageToPathFilter< TInputImage, PolyLineParametricPath< 2 > >
const InputImageType *	GetInput (void)

const InputImageType *	GetInput (unsigned int idx)

virtual void	SetInput (const InputImageType *image)

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

Public Member Functions inherited from itk::PathSource< PolyLineParametricPath< 2 > >
virtual ::itk::LightObject::Pointer	CreateAnother (void) const

OutputPathType *	GetOutput (unsigned int idx)

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

OutputPathType *	GetOutput (void)

virtual void	GraftOutput (OutputPathType *output)

virtual DataObjectPointer	MakeOutput (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	InputImageDimension = TInputImage::ImageDimension

Static Public Attributes inherited from itk::ImageToPathFilter< TInputImage, PolyLineParametricPath< 2 > >
static const unsigned int	InputImageDimension

Protected Member Functions
	ContourExtractor2DImageFilter ()

void	GenerateData ()

virtual void	GenerateInputRequestedRegion () throw ( InvalidRequestedRegionError )

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

virtual	~ContourExtractor2DImageFilter ()

Protected Member Functions inherited from itk::ImageToPathFilter< TInputImage, PolyLineParametricPath< 2 > >
	ImageToPathFilter ()

	~ImageToPathFilter ()

Protected Member Functions inherited from itk::PathSource< PolyLineParametricPath< 2 > >
	PathSource ()

virtual	~PathSource ()

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	ReleaseInputs ()

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	VerifyInputInformation ()

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

virtual void	PushBackInput (const DataObject *input)

virtual void	PopBackInput ()

virtual void	PushFrontInput (const DataObject *input)

virtual void	PopFrontInput ()

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 ()

Private Types
typedef vcl_list< ContourType >	ContourContainer

typedef ContourContainer::iterator	ContourRef

typedef VertexToContourMap::value_type	VertexContourRefPair

typedef VertexToContourMap::iterator	VertexMapIterator

typedef itksys::hash_map < VertexType, ContourRef, VertexHash >	VertexToContourMap

Private Member Functions
void	AddSegment (const VertexType from, const VertexType to)

	ContourExtractor2DImageFilter (const Self &)

void	FillOutputs ()

VertexType	InterpolateContourPosition (InputPixelType fromValue, InputPixelType toValue, InputIndexType fromIndex, InputOffsetType toOffset)

void	operator= (const Self &)

Private Attributes
VertexToContourMap	m_ContourEnds

ContourContainer	m_Contours

VertexToContourMap	m_ContourStarts

InputRealType	m_ContourValue

unsigned int	m_NumberOfContoursCreated

InputRegionType	m_RequestedRegion

bool	m_ReverseContourOrientation

bool	m_UseCustomRegion

bool	m_VertexConnectHighPixels

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

Protected Attributes inherited from itk::ProcessObject
TimeStamp	m_OutputInformationMTime

bool	m_Updating

Member Typedef Documentation

template<class TInputImage >

typedef SmartPointer< const Self > itk::ContourExtractor2DImageFilter< TInputImage >::ConstPointer

Definition at line 112 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef vcl_list< ContourType > itk::ContourExtractor2DImageFilter< TInputImage >::ContourContainer

private

Definition at line 235 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef ContourContainer::iterator itk::ContourExtractor2DImageFilter< TInputImage >::ContourRef

private

Definition at line 236 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef InputImageType::Pointer itk::ContourExtractor2DImageFilter< TInputImage >::InputImagePointer

Image and path typedef support.

Definition at line 118 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef TInputImage itk::ContourExtractor2DImageFilter< TInputImage >::InputImageType

Convenient typedefs for simplifying declarations.

Definition at line 105 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef InputImageType::IndexType itk::ContourExtractor2DImageFilter< TInputImage >::InputIndexType

Definition at line 123 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef InputImageType::OffsetType itk::ContourExtractor2DImageFilter< TInputImage >::InputOffsetType

Definition at line 124 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef InputImageType::PixelType itk::ContourExtractor2DImageFilter< TInputImage >::InputPixelType

Definition at line 122 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef NumericTraits< InputPixelType >::RealType itk::ContourExtractor2DImageFilter< TInputImage >::InputRealType

Real type associated to the input pixel type.

Definition at line 131 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef InputImageType::RegionType itk::ContourExtractor2DImageFilter< TInputImage >::InputRegionType

Definition at line 125 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef OutputPathType::Pointer itk::ContourExtractor2DImageFilter< TInputImage >::OutputPathPointer

Definition at line 126 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef PolyLineParametricPath< 2 > itk::ContourExtractor2DImageFilter< TInputImage >::OutputPathType

Definition at line 106 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef SmartPointer< Self > itk::ContourExtractor2DImageFilter< TInputImage >::Pointer

Definition at line 111 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef ContourExtractor2DImageFilter itk::ContourExtractor2DImageFilter< TInputImage >::Self

Standard class typedefs.

Definition at line 109 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef ImageToPathFilter< InputImageType, OutputPathType > itk::ContourExtractor2DImageFilter< TInputImage >::Superclass

Definition at line 110 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef VertexToContourMap::value_type itk::ContourExtractor2DImageFilter< TInputImage >::VertexContourRefPair

private

Definition at line 284 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef VertexListType::ConstPointer itk::ContourExtractor2DImageFilter< TInputImage >::VertexListConstPointer

Definition at line 134 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef OutputPathType::VertexListType itk::ContourExtractor2DImageFilter< TInputImage >::VertexListType

Definition at line 128 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef VertexToContourMap::iterator itk::ContourExtractor2DImageFilter< TInputImage >::VertexMapIterator

private

Definition at line 283 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef itksys::hash_map< VertexType, ContourRef, VertexHash > itk::ContourExtractor2DImageFilter< TInputImage >::VertexToContourMap

private

Definition at line 282 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

typedef OutputPathType::VertexType itk::ContourExtractor2DImageFilter< TInputImage >::VertexType

Definition at line 127 of file itkContourExtractor2DImageFilter.h.

Constructor & Destructor Documentation

template<class TInputImage >

itk::ContourExtractor2DImageFilter< TInputImage >::ContourExtractor2DImageFilter ( )

protected

End concept checking

template<class TInputImage >

virtual itk::ContourExtractor2DImageFilter< TInputImage >::~ContourExtractor2DImageFilter ( )

protectedvirtual

template<class TInputImage >

itk::ContourExtractor2DImageFilter< TInputImage >::ContourExtractor2DImageFilter ( const Self & )

private

Member Function Documentation

template<class TInputImage >

void itk::ContourExtractor2DImageFilter< TInputImage >::AddSegment	(	const VertexType	from,
		const VertexType	to
	)

private

template<class TInputImage >

void itk::ContourExtractor2DImageFilter< TInputImage >::ClearRequestedRegion ( )

template<class TInputImage >

virtual::itk::LightObject::Pointer itk::ContourExtractor2DImageFilter< TInputImage >::CreateAnother ( void ) const

virtual

Create an object from an instance, potentially deferring to a factory. This method allows you to create an instance of an object that is exactly the same type as the referring object. This is useful in cases where an object has been cast back to a base class.

Reimplemented from itk::Object.

template<class TInputImage >

void itk::ContourExtractor2DImageFilter< TInputImage >::FillOutputs ( )

private

template<class TInputImage >

void itk::ContourExtractor2DImageFilter< TInputImage >::GenerateData ( void )

protectedvirtual

This method causes the filter to generate its output.

Reimplemented from itk::ProcessObject.

template<class TInputImage >

virtual void itk::ContourExtractor2DImageFilter< TInputImage >::GenerateInputRequestedRegion ( ) throw ( InvalidRequestedRegionError )

protectedvirtual

ContourExtractor2DImageFilter manually controls the input requested region via SetRequestedRegion and ClearRequestedRegion, so it must override the superclass method.

Reimplemented from itk::ProcessObject.

template<class TInputImage >

virtual const InputRealType& itk::ContourExtractor2DImageFilter< TInputImage >::GetContourValue ( )

virtual

Set/Get the image intensity value that the contours should follow. This is the equivalent of an iso-value in Marching Squares.

template<class TInputImage >

virtual const char* itk::ContourExtractor2DImageFilter< TInputImage >::GetNameOfClass ( ) const

virtual

Run-time type information (and related methods).

Reimplemented from itk::ImageToPathFilter< TInputImage, PolyLineParametricPath< 2 > >.

template<class TInputImage >

virtual const InputRegionType& itk::ContourExtractor2DImageFilter< TInputImage >::GetRequestedRegion ( )

virtual

template<class TInputImage >

virtual const bool& itk::ContourExtractor2DImageFilter< TInputImage >::GetReverseContourOrientation ( )

virtual

Control the orientation of the contours with reference to the image gradient. (See class documentation.)

template<class TInputImage >

virtual const bool& itk::ContourExtractor2DImageFilter< TInputImage >::GetVertexConnectHighPixels ( )

virtual

Control whether high- or low-valued pixels are vertex-connected. Default is for low-valued pixels to be vertex-connected. (See class documentation.)

template<class TInputImage >

VertexType itk::ContourExtractor2DImageFilter< TInputImage >::InterpolateContourPosition	(	InputPixelType	fromValue,
		InputPixelType	toValue,
		InputIndexType	fromIndex,
		InputOffsetType	toOffset
	)

private

template<class TInputImage >

static Pointer itk::ContourExtractor2DImageFilter< TInputImage >::New ( )

static

Method for creation through the object factory.

template<class TInputImage >

void itk::ContourExtractor2DImageFilter< TInputImage >::operator= ( const Self & )

private

template<class TInputImage >

void itk::ContourExtractor2DImageFilter< TInputImage >::PrintSelf	(	std::ostream &	os,
		Indent	indent
	)		const

protectedvirtual

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::ImageToPathFilter< TInputImage, PolyLineParametricPath< 2 > >.

template<class TInputImage >

virtual void itk::ContourExtractor2DImageFilter< TInputImage >::ReverseContourOrientationOff ( )

virtual

Control the orientation of the contours with reference to the image gradient. (See class documentation.)

template<class TInputImage >

virtual void itk::ContourExtractor2DImageFilter< TInputImage >::ReverseContourOrientationOn ( )

virtual

Control the orientation of the contours with reference to the image gradient. (See class documentation.)

template<class TInputImage >

virtual void itk::ContourExtractor2DImageFilter< TInputImage >::SetContourValue ( InputRealType _arg )

virtual

Set/Get the image intensity value that the contours should follow. This is the equivalent of an iso-value in Marching Squares.

template<class TInputImage >

void itk::ContourExtractor2DImageFilter< TInputImage >::SetRequestedRegion ( const InputRegionType region )

Control whether the largest possible input region is used, or if a custom requested region is to be used.

template<class TInputImage >

virtual void itk::ContourExtractor2DImageFilter< TInputImage >::SetReverseContourOrientation ( bool _arg )

virtual

Control the orientation of the contours with reference to the image gradient. (See class documentation.)

template<class TInputImage >

virtual void itk::ContourExtractor2DImageFilter< TInputImage >::SetVertexConnectHighPixels ( bool _arg )

virtual

Control whether high- or low-valued pixels are vertex-connected. Default is for low-valued pixels to be vertex-connected. (See class documentation.)

template<class TInputImage >

itk::ContourExtractor2DImageFilter< TInputImage >::typedef ( Concept::SameDimension< itkGetStaticConstMacro(InputImageDimension), 2 > )

Begin concept checking This class requires DimensionShouldBe2 in the form of ( Concept::SameDimension< itkGetStaticConstMacro(InputImageDimension), 2 > )

template<class TInputImage >

itk::ContourExtractor2DImageFilter< TInputImage >::typedef ( Concept::Comparable< InputPixelType > )

This class requires InputPixelTypeComparable in the form of ( Concept::Comparable< InputPixelType > )

template<class TInputImage >

itk::ContourExtractor2DImageFilter< TInputImage >::typedef ( Concept::HasPixelTraits< InputPixelType > )

This class requires InputHasPixelTraitsCheck in the form of ( Concept::HasPixelTraits< InputPixelType > )

template<class TInputImage >

itk::ContourExtractor2DImageFilter< TInputImage >::typedef ( Concept::HasNumericTraits< InputPixelType > )

This class requires InputHasNumericTraitsCheck in the form of ( Concept::HasNumericTraits< InputPixelType > )

template<class TInputImage >

virtual void itk::ContourExtractor2DImageFilter< TInputImage >::VertexConnectHighPixelsOff ( )

virtual

Control whether high- or low-valued pixels are vertex-connected. Default is for low-valued pixels to be vertex-connected. (See class documentation.)

template<class TInputImage >

virtual void itk::ContourExtractor2DImageFilter< TInputImage >::VertexConnectHighPixelsOn ( )

virtual

Control whether high- or low-valued pixels are vertex-connected. Default is for low-valued pixels to be vertex-connected. (See class documentation.)

Member Data Documentation

template<class TInputImage >

const unsigned int itk::ContourExtractor2DImageFilter< TInputImage >::InputImageDimension = TInputImage::ImageDimension

static

Extract dimension from input and output image.

Definition at line 102 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

VertexToContourMap itk::ContourExtractor2DImageFilter< TInputImage >::m_ContourEnds

private

Definition at line 291 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

ContourContainer itk::ContourExtractor2DImageFilter< TInputImage >::m_Contours

private

Definition at line 287 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

VertexToContourMap itk::ContourExtractor2DImageFilter< TInputImage >::m_ContourStarts

private

Definition at line 290 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

InputRealType itk::ContourExtractor2DImageFilter< TInputImage >::m_ContourValue

private

Definition at line 204 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

unsigned int itk::ContourExtractor2DImageFilter< TInputImage >::m_NumberOfContoursCreated

private

Definition at line 209 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

InputRegionType itk::ContourExtractor2DImageFilter< TInputImage >::m_RequestedRegion

private

Definition at line 208 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

bool itk::ContourExtractor2DImageFilter< TInputImage >::m_ReverseContourOrientation

private

Definition at line 205 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

bool itk::ContourExtractor2DImageFilter< TInputImage >::m_UseCustomRegion

private

Definition at line 207 of file itkContourExtractor2DImageFilter.h.

template<class TInputImage >

bool itk::ContourExtractor2DImageFilter< TInputImage >::m_VertexConnectHighPixels

private

Definition at line 206 of file itkContourExtractor2DImageFilter.h.

The documentation for this class was generated from the following file:

itkContourExtractor2DImageFilter.h

Detailed Description

template<class TInputImage> class itk::ContourExtractor2DImageFilter< TInputImage >

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template<class TInputImage>
class itk::ContourExtractor2DImageFilter< TInputImage >