#include <itkImageRegionExclusionConstIteratorWithIndex.h>

Inheritance diagram for itk::ImageRegionExclusionConstIteratorWithIndex< TImage >:

Collaboration diagram for itk::ImageRegionExclusionConstIteratorWithIndex< TImage >:

Public Types
typedef Superclass::AccessorType	AccessorType
typedef Superclass::ImageType	ImageType
typedef Superclass::IndexType	IndexType
typedef Superclass::InternalPixelType	InternalPixelType
typedef Superclass::OffsetType	OffsetType
typedef Superclass::PixelContainer	PixelContainer
typedef Superclass::PixelContainerPointer	PixelContainerPointer
typedef Superclass::PixelType	PixelType
typedef Superclass::RegionType	RegionType
typedef ImageRegionExclusionConstIteratorWithIndex	Self
typedef Superclass::SizeType	SizeType
typedef ImageRegionConstIteratorWithIndex < TImage >	Superclass
Public Member Functions
void	GoToBegin (void)
void	GoToReverseBegin (void)
	ImageRegionExclusionConstIteratorWithIndex ()
	ImageRegionExclusionConstIteratorWithIndex (const ImageType *ptr, const RegionType &region)
	ImageRegionExclusionConstIteratorWithIndex (const Superclass &it)
Self &	operator++ ()
Self &	operator-- ()
void	SetExclusionRegion (const RegionType &region)
void	SetExclusionRegionToInsetRegion ()
Private Attributes
IndexType	m_ExclusionBegin
IndexType	m_ExclusionEnd
RegionType	m_ExclusionRegion

Detailed Description

template<typename TImage>
class itk::ImageRegionExclusionConstIteratorWithIndex< TImage >

A multi-dimensional image iterator that walks an image region, excluding a second region that may partially or completely overlap the first, with read-only access to pixels.

ImageRegionExclusionConstIteratorWithIndex is a class templated over the image type that represents a multi-dimensional iterator. The exclusion region is set after construction. By default the exclusion region is empty and the iterator will behave as the itk::ImageRegionConstIteratorWithIndex with a penalty in performance due to internal bounds checking. There are no restrictions on valid exclusion regions.

As with other ITK image iterators, ImageRegionExclusionConstIteratorWithIndex requires that more information be specified before the iterator can be used than conventional iterators. Whereas the std::vector::iterator from the STL only needs to be passed a pointer to establish the iterator, the multi-dimensional image iterator needs a pointer, the size of the buffer, the size of the region, the start index of the buffer, and the start index of the region. To gain access to this information, ImageRegionExclusionConstIteratorWithIndex holds a reference to the image over which it is traversing.

ImageRegionExclusionConstIteratorWithIndex assumes a particular layout of the image data. The is arranged in a 1D array as if it were [][][][slice][row][col] with Index[0] = col, Index[1] = row, Index[2] = slice, etc.

The operator++ method provides a simple syntax for walking around a region of a multidimensional image. operator++ iterates across a row, constraining the movement to within a region of image. When the iterator reaches the boundary of the region along a row, the iterator automatically wraps to the next row, starting at the first pixel in the row that is part of the region. This allows for simple processing loops of the form:

  IteratorType it( image, image->GetRequestedRegion() );

  it.SetExclusionRegion( exclusionRegion );
  it.GoToBegin();

  while( ! it.IsAtEnd() )
  {
    it.Set( 100.0 + it.Get() );
    ++it;
  }

It also can be used for walking in the reverse direction like

  IteratorType it( image, image->GetRequestedRegion() );

  it.SetExclusionRegion( exclusionRegion );
  it.GoToEnd();

  while( !it.IsAtBegin() )
  {
    it.Set( 100.0 );
    --it;
  }

MORE INFORMATION: For a complete description of the ITK Image Iterators and their API, please see the Iterators chapter in the ITK Software Guide. The ITK Software Guide is available in print and as a free .pdf download from http://www.itk.org.

See also:: ImageConstIterator; ConditionalConstIterator; ConstNeighborhoodIterator; ConstShapedNeighborhoodIterator; ConstSliceIterator; CorrespondenceDataStructureIterator; FloodFilledFunctionConditionalConstIterator; FloodFilledImageFunctionConditionalConstIterator; FloodFilledImageFunctionConditionalIterator; FloodFilledSpatialFunctionConditionalConstIterator; FloodFilledSpatialFunctionConditionalIterator; ImageConstIterator; ImageConstIteratorWithIndex; ImageIterator; ImageIteratorWithIndex; ImageLinearConstIteratorWithIndex; ImageLinearIteratorWithIndex; ImageRandomConstIteratorWithIndex; ImageRandomIteratorWithIndex; ImageRegionConstIterator; ImageRegionConstIteratorWithIndex; ImageRegionExclusionConstIteratorWithIndex; ImageRegionExclusionIteratorWithIndex; ImageRegionIterator; ImageRegionIteratorWithIndex; ImageRegionReverseConstIterator; ImageRegionReverseIterator; ImageReverseConstIterator; ImageReverseIterator; ImageSliceConstIteratorWithIndex; ImageSliceIteratorWithIndex; NeighborhoodIterator; PathConstIterator; PathIterator; ShapedNeighborhoodIterator; SliceIterator; ImageConstIteratorWithIndex

Wiki Examples:

All Examples

Iterator over an image skipping a specified region

Definition at line 131 of file itkImageRegionExclusionConstIteratorWithIndex.h.

Member Typedef Documentation

template<typename TImage>

typedef Superclass::AccessorType itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::AccessorType

Accessor type that converts data between internal and external representations.

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 149 of file itkImageRegionExclusionConstIteratorWithIndex.h.

template<typename TImage>

typedef Superclass::ImageType itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::ImageType

Image typedef support.

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 144 of file itkImageRegionExclusionConstIteratorWithIndex.h.

template<typename TImage>

typedef Superclass::IndexType itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::IndexType

Types inherited from the Superclass

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 140 of file itkImageRegionExclusionConstIteratorWithIndex.h.

template<typename TImage>

typedef Superclass::InternalPixelType itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::InternalPixelType

Internal Pixel Type

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 147 of file itkImageRegionExclusionConstIteratorWithIndex.h.

template<typename TImage>

typedef Superclass::OffsetType itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::OffsetType

Type of the Offset taken from the image

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 142 of file itkImageRegionExclusionConstIteratorWithIndex.h.

template<typename TImage>

typedef Superclass::PixelContainer itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::PixelContainer

PixelContainer typedef support. Used to refer to the container for the pixel data. While this was already typdef'ed in the superclass, it needs to be redone here for this subclass to compile properly with gcc.

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 145 of file itkImageRegionExclusionConstIteratorWithIndex.h.

template<typename TImage>

typedef Superclass::PixelContainerPointer itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::PixelContainerPointer

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 146 of file itkImageRegionExclusionConstIteratorWithIndex.h.

template<typename TImage>

typedef Superclass::PixelType itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::PixelType

External Pixel Type

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 148 of file itkImageRegionExclusionConstIteratorWithIndex.h.

template<typename TImage>

typedef Superclass::RegionType itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::RegionType

Region typedef support.

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 143 of file itkImageRegionExclusionConstIteratorWithIndex.h.

template<typename TImage>

typedef ImageRegionExclusionConstIteratorWithIndex itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::Self

Standard class typedefs.

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 136 of file itkImageRegionExclusionConstIteratorWithIndex.h.

template<typename TImage>

typedef Superclass::SizeType itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::SizeType

Size typedef support.

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 141 of file itkImageRegionExclusionConstIteratorWithIndex.h.

template<typename TImage>

typedef ImageRegionConstIteratorWithIndex< TImage > itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::Superclass

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

Reimplemented in itk::ImageRegionExclusionIteratorWithIndex< TImage >.

Definition at line 137 of file itkImageRegionExclusionConstIteratorWithIndex.h.

Constructor & Destructor Documentation

template<typename TImage>

itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::ImageRegionExclusionConstIteratorWithIndex ( )

Default constructor. Needed since we provide a cast constructor.

template<typename TImage>

itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::ImageRegionExclusionConstIteratorWithIndex	(	const ImageType *	ptr,
		const RegionType &	region
	)

Constructor establishes an iterator to walk a particular image and a particular region of that image.

template<typename TImage>

itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::ImageRegionExclusionConstIteratorWithIndex ( const Superclass & it )

Constructor that can be used to cast from an ImageRegionConstIteratorWithIndex to an ImageRegionExclusionConstIteratorWithIndex. Many routines return an ImageIterator, but for a particular task, you may want an ImageRegionExclusionConstIteratorWithIndex. Rather than provide overloaded APIs that return different types of Iterators, itk returns ImageIterators and uses constructors to cast from an ImageIterator to a ImageRegionExclusionConstIteratorWithIndex.

Member Function Documentation

template<typename TImage>

void itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::GoToBegin ( void )

Move an iterator to the beginning of the non-excluded region.

Reimplemented from itk::ImageConstIteratorWithIndex< TImage >.

template<typename TImage>

void itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::GoToReverseBegin ( void )

Move an iterator to the End of the region.

Reimplemented from itk::ImageConstIteratorWithIndex< TImage >.

template<typename TImage>

Self& itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::operator++ ( )

Increment (prefix) the fastest moving dimension of the iterator's index. This operator will constrain the iterator within the region (i.e. the iterator will automatically wrap from the end of the row of the region to the beginning of the next row of the region) up until the iterator tries to moves past the last pixel of the region. Here, the iterator will be set to be one pixel past the end of the region.

See also:: operator++(int)

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

template<typename TImage>

Self& itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::operator-- ( )

Decrement (prefix) the fastest moving dimension of the iterator's index. This operator will constrain the iterator within the region (i.e. the iterator will automatically wrap from the beginning of the row of the region to the end of the next row of the region) up until the iterator tries to moves past the first pixel of the region. Here, the iterator will be set to be one pixel past the beginning of the region.

See also:: operator--(int)

Reimplemented from itk::ImageRegionConstIteratorWithIndex< TImage >.

template<typename TImage>

void itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::SetExclusionRegion ( const RegionType & region )

Method to define the Exclusion region. The iterator will skip pixels inside this region.

Warning:: The exclusion region must be completly contained inside the normal region used to construct the iterator. A border of at least one pixel should exist between the normal region and the exclusion region.

template<typename TImage>

void itk::ImageRegionExclusionConstIteratorWithIndex< TImage >::SetExclusionRegionToInsetRegion ( )

Set the exclusion region to be inset one pixel in from the region the iterator walks. This configures the iterator to only walk the pixels on the boundary of the region.