#include <itkLabelObject.h>

Detailed Description

template<typename TLabel, unsigned int VImageDimension>
class itk::LabelObject< TLabel, VImageDimension >

The base class for the representation of a labeled binary object in an image.

LabelObject is the base class to represent a labeled object in an image. It should be used associated with the LabelMap.

LabelObject store mainly 2 things: the label of the object, and a set of lines which are part of the object. No attribute is available in that class, so this class can be used as a base class to implement a label object with attribute, or when no attribute is needed (see the reconstruction filters for an example. If a simple attribute is needed, AttributeLabelObject can be used directly.

All the subclasses of LabelObject have to reimplement the CopyAttributesFrom() and CopyAllFrom() method. No need to reimplement CopyLinesFrom() since all derived class share the same type line data members.

The pixels locations belonging to the LabelObject can be obtained using:

for(unsigned int pixelId = 0; pixelId < labelObject->Size(); pixelId++)
  {
  std::cout << labelObject->GetIndex(pixelId);
  }

Author: Gaetan Lehmann. Biologie du Developpement et de la Reproduction, INRA de Jouy-en-Josas, France.

This implementation was taken from the Insight Journal paper: https://doi.org/10.54294/q6auw4

See also: LabelMapFilter, AttributeLabelObject

Definition at line 65 of file itkLabelObject.h.

Inheritance diagram for itk::LabelObject< TLabel, VImageDimension >:

Collaboration diagram for itk::LabelObject< TLabel, VImageDimension >:

Classes
class	ConstIndexIterator

class	ConstLineIterator

Public Types
using	AttributeType = unsigned int

using	ConstPointer = SmartPointer< const Self >

using	ConstWeakPointer = WeakPointer< const Self >

using	IndexType = Index< VImageDimension >

using	LabelObjectType = Self

using	LabelType = TLabel

using	LengthType = typename LineType::LengthType

using	LineType = LabelObjectLine< VImageDimension >

using	OffsetType = Offset< VImageDimension >

using	Pointer = SmartPointer< Self >

using	Self = LabelObject

using	SizeValueType = itk::SizeValueType

using	Superclass = LightObject

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

using	Pointer = SmartPointer< Self >

using	Self = LightObject

Public Member Functions
void	AddIndex (const IndexType &idx)

void	AddLine (const IndexType &idx, const LengthType &length)

void	AddLine (const LineType &line)

void	Clear ()

template<typename TSourceLabelObject >
void	CopyAllFrom (const TSourceLabelObject *src)

template<typename TSourceLabelObject >
void	CopyAttributesFrom (const TSourceLabelObject *src)

template<typename TSourceLabelObject >
void	CopyLinesFrom (const TSourceLabelObject *src)

bool	Empty () const

IndexType	GetIndex (SizeValueType offset) const

const LabelType &	GetLabel () const

LineType &	GetLine (SizeValueType i)

const LineType &	GetLine (SizeValueType i) const

const char *	GetNameOfClass () const override

SizeValueType	GetNumberOfLines () const

bool	HasIndex (const IndexType &idx) const

void	Optimize ()

bool	RemoveIndex (const IndexType &idx)

void	SetLabel (const LabelType &label)

void	Shift (OffsetType offset)

SizeValueType	Size () const

Public Member Functions inherited from itk::LightObject
Pointer	Clone () const

virtual Pointer	CreateAnother () const

virtual void	Delete ()

virtual const char *	GetNameOfClass () const

virtual int	GetReferenceCount () const

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

virtual void	Register () const

virtual void	SetReferenceCount (int)

virtual void	UnRegister () const noexcept

Static Public Member Functions
static AttributeType	GetAttributeFromName (const std::string &s)

static std::string	GetNameFromAttribute (const AttributeType &a)

static Pointer	New ()

Static Public Member Functions inherited from itk::LightObject
static void	BreakOnError ()

static Pointer	New ()

Static Public Attributes
static constexpr unsigned int	ImageDimension = VImageDimension

static constexpr AttributeType	LABEL = 0

Protected Member Functions
	LabelObject ()

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

Protected Member Functions inherited from itk::LightObject
virtual LightObject::Pointer	InternalClone () const

	LightObject ()

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

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

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

virtual	~LightObject ()

Private Types
using	LineContainerType = typename std::deque< LineType >

Private Attributes
LabelType	m_Label {}

LineContainerType	m_LineContainer {}

Additional Inherited Members
Protected Attributes inherited from itk::LightObject
std::atomic< int >	m_ReferenceCount {}

Member Typedef Documentation

◆ AttributeType

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::AttributeType = unsigned int

Definition at line 92 of file itkLabelObject.h.

◆ ConstPointer

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::ConstPointer = SmartPointer<const Self>

Definition at line 76 of file itkLabelObject.h.

◆ ConstWeakPointer

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::ConstWeakPointer = WeakPointer<const Self>

Definition at line 77 of file itkLabelObject.h.

◆ IndexType

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::IndexType = Index<VImageDimension>

Definition at line 87 of file itkLabelObject.h.

◆ LabelObjectType

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::LabelObjectType = Self

Definition at line 74 of file itkLabelObject.h.

◆ LabelType

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::LabelType = TLabel

Definition at line 89 of file itkLabelObject.h.

◆ LengthType

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::LengthType = typename LineType::LengthType

Definition at line 91 of file itkLabelObject.h.

◆ LineContainerType

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::LineContainerType = typename std::deque<LineType>

private

Definition at line 408 of file itkLabelObject.h.

◆ LineType

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::LineType = LabelObjectLine<VImageDimension>

Definition at line 90 of file itkLabelObject.h.

◆ OffsetType

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::OffsetType = Offset<VImageDimension>

Definition at line 88 of file itkLabelObject.h.

◆ Pointer

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::Pointer = SmartPointer<Self>

Definition at line 75 of file itkLabelObject.h.

◆ Self

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::Self = LabelObject

Standard class type aliases

Definition at line 72 of file itkLabelObject.h.

◆ SizeValueType

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::SizeValueType = itk::SizeValueType

Definition at line 93 of file itkLabelObject.h.

◆ Superclass

template<typename TLabel , unsigned int VImageDimension>

using itk::LabelObject< TLabel, VImageDimension >::Superclass = LightObject

Definition at line 73 of file itkLabelObject.h.

Constructor & Destructor Documentation

◆ LabelObject()

template<typename TLabel , unsigned int VImageDimension>

itk::LabelObject< TLabel, VImageDimension >::LabelObject ( )

protected

Member Function Documentation

◆ AddIndex()

template<typename TLabel , unsigned int VImageDimension>

void itk::LabelObject< TLabel, VImageDimension >::AddIndex ( const IndexType & idx )

Add an index to the object. If the index is already in the object, the index can be found several time in the object.

◆ AddLine() [1/2]

template<typename TLabel , unsigned int VImageDimension>

void itk::LabelObject< TLabel, VImageDimension >::AddLine	(	const IndexType &	idx,
		const LengthType &	length
	)

Add a new line to the object, without any check.

◆ AddLine() [2/2]

template<typename TLabel , unsigned int VImageDimension>

void itk::LabelObject< TLabel, VImageDimension >::AddLine ( const LineType & line )

Add a new line to the object, without any check.

◆ Clear()

template<typename TLabel , unsigned int VImageDimension>

void itk::LabelObject< TLabel, VImageDimension >::Clear ( )

◆ CopyAllFrom()

template<typename TLabel , unsigned int VImageDimension>

template<typename TSourceLabelObject >

void itk::LabelObject< TLabel, VImageDimension >::CopyAllFrom ( const TSourceLabelObject< TLabel, VImageDimension > * src )

Copy the lines, the label and the attributes from another node.

◆ CopyAttributesFrom()

template<typename TLabel , unsigned int VImageDimension>

template<typename TSourceLabelObject >

void itk::LabelObject< TLabel, VImageDimension >::CopyAttributesFrom ( const TSourceLabelObject< TLabel, VImageDimension > * src )

Copy the label and the attributes of another node to this one

◆ CopyLinesFrom()

template<typename TLabel , unsigned int VImageDimension>

template<typename TSourceLabelObject >

void itk::LabelObject< TLabel, VImageDimension >::CopyLinesFrom ( const TSourceLabelObject< TLabel, VImageDimension > * src )

Copy the lines of another node to this one

◆ Empty()

template<typename TLabel , unsigned int VImageDimension>

bool itk::LabelObject< TLabel, VImageDimension >::Empty ( ) const

Returns true if there no line in the container (and thus no pixel in the object.

◆ GetAttributeFromName()

template<typename TLabel , unsigned int VImageDimension>

static AttributeType itk::LabelObject< TLabel, VImageDimension >::GetAttributeFromName ( const std::string & s )

static

◆ GetIndex()

template<typename TLabel , unsigned int VImageDimension>

IndexType itk::LabelObject< TLabel, VImageDimension >::GetIndex ( SizeValueType offset ) const

Get the index of the ith pixel associated with the object. Valid indices are from 0 to LabelObject->GetSize() - 1.

◆ GetLabel()

template<typename TLabel , unsigned int VImageDimension>

const LabelType & itk::LabelObject< TLabel, VImageDimension >::GetLabel ( ) const

Set/Get the label associated with the object.

◆ GetLine() [1/2]

template<typename TLabel , unsigned int VImageDimension>

LineType & itk::LabelObject< TLabel, VImageDimension >::GetLine ( SizeValueType i )

◆ GetLine() [2/2]

template<typename TLabel , unsigned int VImageDimension>

const LineType & itk::LabelObject< TLabel, VImageDimension >::GetLine ( SizeValueType i ) const

◆ GetNameFromAttribute()

template<typename TLabel , unsigned int VImageDimension>

static std::string itk::LabelObject< TLabel, VImageDimension >::GetNameFromAttribute ( const AttributeType & a )

static

◆ GetNameOfClass()

template<typename TLabel , unsigned int VImageDimension>

const char * itk::LabelObject< TLabel, VImageDimension >::GetNameOfClass ( ) const

overridevirtual

See also: LightObject::GetNameOfClass()

Reimplemented from itk::LightObject.

Reimplemented in itk::ShapeLabelObject< TLabel, VImageDimension >, and itk::StatisticsLabelObject< TLabel, VImageDimension >.

◆ GetNumberOfLines()

template<typename TLabel , unsigned int VImageDimension>

SizeValueType itk::LabelObject< TLabel, VImageDimension >::GetNumberOfLines ( ) const

◆ HasIndex()

template<typename TLabel , unsigned int VImageDimension>

bool itk::LabelObject< TLabel, VImageDimension >::HasIndex ( const IndexType & idx ) const

Return true if the object contain the given index and false otherwise. Worst case complexity is O(L) where L is the number of lines in the object.

◆ New()

template<typename TLabel , unsigned int VImageDimension>

static Pointer itk::LabelObject< TLabel, VImageDimension >::New ( )

static

Method for creation through the object factory.

◆ Optimize()

template<typename TLabel , unsigned int VImageDimension>

void itk::LabelObject< TLabel, VImageDimension >::Optimize ( )

Reorder the lines, merge the touching lines and ensure that no pixel is covered by two lines

◆ PrintSelf()

template<typename TLabel , unsigned int VImageDimension>

void itk::LabelObject< TLabel, VImageDimension >::PrintSelf	(	std::ostream &	os,
		Indent	indent
	)		const

overrideprotectedvirtual

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::LightObject.

Reimplemented in itk::ShapeLabelObject< TLabel, VImageDimension >, and itk::StatisticsLabelObject< TLabel, VImageDimension >.

◆ RemoveIndex()

template<typename TLabel , unsigned int VImageDimension>

bool itk::LabelObject< TLabel, VImageDimension >::RemoveIndex ( const IndexType & idx )

Remove an index to the object. Depending on the configuration, it can either reduce the size of the corresponding line, add one more line, remove the line from the line container.

◆ SetLabel()

template<typename TLabel , unsigned int VImageDimension>

void itk::LabelObject< TLabel, VImageDimension >::SetLabel ( const LabelType & label )

◆ Shift()

template<typename TLabel , unsigned int VImageDimension>

void itk::LabelObject< TLabel, VImageDimension >::Shift ( OffsetType offset )

Shift the object position

◆ Size()

template<typename TLabel , unsigned int VImageDimension>

SizeValueType itk::LabelObject< TLabel, VImageDimension >::Size ( ) const

Returns the number of pixels contained in the object.

Warning: To get an accurate result, you need to make sure there is no duplication in the line container. One way to ensure this (at a cost) is to call the Optimize method.

Member Data Documentation

◆ ImageDimension

template<typename TLabel , unsigned int VImageDimension>

constexpr unsigned int itk::LabelObject< TLabel, VImageDimension >::ImageDimension = VImageDimension

staticconstexpr

Definition at line 85 of file itkLabelObject.h.

◆ LABEL

template<typename TLabel , unsigned int VImageDimension>

constexpr AttributeType itk::LabelObject< TLabel, VImageDimension >::LABEL = 0

staticconstexpr

Definition at line 95 of file itkLabelObject.h.

◆ m_Label

template<typename TLabel , unsigned int VImageDimension>

LabelType itk::LabelObject< TLabel, VImageDimension >::m_Label {}

private

Definition at line 411 of file itkLabelObject.h.

◆ m_LineContainer

template<typename TLabel , unsigned int VImageDimension>

LineContainerType itk::LabelObject< TLabel, VImageDimension >::m_LineContainer {}

private

Definition at line 410 of file itkLabelObject.h.

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

itkLabelObject.h

Detailed Description

Classes

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Private Types

Private Attributes

Additional Inherited Members

Member Typedef Documentation

◆ AttributeType

◆ ConstPointer

◆ ConstWeakPointer

◆ IndexType

◆ LabelObjectType

◆ LabelType

◆ LengthType

◆ LineContainerType

◆ LineType

◆ OffsetType

◆ Pointer

◆ Self

◆ SizeValueType

◆ Superclass

Constructor & Destructor Documentation

◆ LabelObject()

Member Function Documentation

◆ AddIndex()

◆ AddLine() [1/2]

◆ AddLine() [2/2]

◆ Clear()

◆ CopyAllFrom()

◆ CopyAttributesFrom()

◆ CopyLinesFrom()

◆ Empty()

◆ GetAttributeFromName()

◆ GetIndex()

◆ GetLabel()

◆ GetLine() [1/2]

◆ GetLine() [2/2]

◆ GetNameFromAttribute()

◆ GetNameOfClass()

◆ GetNumberOfLines()

◆ HasIndex()

◆ New()

◆ Optimize()

◆ PrintSelf()

◆ RemoveIndex()

◆ SetLabel()

◆ Shift()

◆ Size()

Member Data Documentation

◆ ImageDimension

◆ LABEL

◆ m_Label

◆ m_LineContainer