A generic connected components filter that labels the objects in an artibitrary image. More...

#include <itkConnectedComponentFunctorImageFilter.h>

Inheritance diagram for itk::ConnectedComponentFunctorImageFilter< TInputImage, TOutputImage, TFunctor, TMaskImage >:

Collaboration diagram for itk::ConnectedComponentFunctorImageFilter< TInputImage, TOutputImage, TFunctor, TMaskImage >:

Public Types
typedef SmartPointer< const Self >	ConstPointer
typedef TFunctor	FunctorType
typedef TInputImage::IndexType	IndexType
typedef Superclass::InputImagePointer	InputImagePointer
typedef TInputImage	InputImageType
typedef std::list< IndexType >	ListType
typedef MaskImageType::Pointer	MaskImagePointer
typedef TMaskImage	MaskImageType
typedef TOutputImage	OutputImageType
typedef SmartPointer< Self >	Pointer
typedef TOutputImage::RegionType	RegionType
typedef ConnectedComponentFunctorImageFilter	Self
typedef TInputImage::SizeType	SizeType
typedef ConnectedComponentImageFilter < TInputImage, TOutputImage, TMaskImage >	Superclass
Public Member Functions
virtual ::itk::LightObject::Pointer	CreateAnother (void) const
virtual const char *	GetNameOfClass () const
	typedef (Concept::Convertible< unsigned long, OutputPixelType >) UnsignedLongConvertibleToOutputCheck
	typedef (Concept::Convertible< OutputPixelType, long >) OutputConvertibleToLongCheck
	typedef (Concept::Convertible< OutputPixelType, unsigned long >) OutputConvertibleToUnsignedLongCheck
	typedef (Concept::Convertible< OutputPixelType, unsigned int >) OutputConvertibleToUnsignedIntCheck
	typedef (Concept::EqualityComparable< OutputPixelType >) OutputEqualityComparableCheck
	typedef (Concept::EqualityComparable< InputPixelType >) InputEqualityComparableCheck
	typedef (Concept::SameDimension< InputImageDimension, ImageDimension >) SameDimensionCheck
	typedef (Concept::IncrementDecrementOperators< OutputPixelType >) OutputIncrementDecrementOperatorsCheck

FunctorType &	GetFunctor ()
const FunctorType &	GetFunctor () const

void	SetFunctor (const FunctorType &functor)
Static Public Member Functions
static Pointer	New ()
Protected Member Functions
void	GenerateData ()

	ConnectedComponentFunctorImageFilter ()
virtual	~ConnectedComponentFunctorImageFilter ()
	ConnectedComponentFunctorImageFilter (const Self &)
Protected Attributes
FunctorType	m_Functor
typedef TOutputImage::PixelType	OutputPixelType
typedef TOutputImage::InternalPixelType	OutputInternalPixelType
typedef TInputImage::PixelType	InputPixelType
typedef TInputImage::InternalPixelType	InputInternalPixelType
typedef TMaskImage::PixelType	MaskPixelType
static const unsigned int	ImageDimension = TOutputImage::ImageDimension
static const unsigned int	InputImageDimension = TInputImage::ImageDimension

Detailed Description

template<class TInputImage, class TOutputImage, class TFunctor, class TMaskImage = TInputImage>
class itk::ConnectedComponentFunctorImageFilter< TInputImage, TOutputImage, TFunctor, TMaskImage >

A generic connected components filter that labels the objects in an artibitrary image.

ConnectedComponentFunctorImageFilter labels the objects in an arbitrary image. Each distinct object is assigned a unique label. The filter makes three passes through the image. The first pass initializes the output. The second pass labels each foreground pixel such that all the pixels associated with an object either have the same label or have had their labels entered into a equivalency table. The third pass through the image flattens the equivalency table such that all pixels for an object have the same label.

The functor specifies the criteria to join neighboring pixels. For example a simple intensity threshold difference might be used for scalar imagery.

The final object labels are in no particular order (and some object labels may not be used on the final objects). You can reorder the labels such that object labels are consecutive and sorted based on object size by passing the output of this filter to a RelabelComponentImageFilter.

See also:: ImageToImageFilter

Definition at line 54 of file itkConnectedComponentFunctorImageFilter.h.