#include <itkImageRegionIterator.h>

Detailed Description

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

A multi-dimensional iterator templated over image type that walks a region of pixels.

The itk::ImageRegionIterator is optimized for iteration speed and is the first choice for iterative, pixel-wise operations on an image. ImageRegionIterator is the least specialized of the ITK image iterator classes. ImageRegionIterator is templated over the image type, and is constrained to walk only within the specified region and along a line parallel to one of the coordinate axes, "wrapping" to the next line as it reaches the boundary of the image. To walk the entire image, specify the region to be image->GetRequestedRegion().

Most of the functionality is inherited from the ImageRegionConstIterator. The current class only adds write access to image pixels.

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 https://www.itk.org.

example ImageRegionIterator.cxx

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; ImageRegionRange; ImageRegionIndexRange

ITK Sphinx Examples:

All ITK Sphinx Examples

Iterate Region In Image With Write Access

Examples: Examples/Filtering/DiffusionTensor3DReconstructionImageFilter.cxx, Examples/Filtering/GaussianBlurImageFunction.cxx, Examples/Iterators/ImageRegionIterator.cxx, Examples/Iterators/NeighborhoodIterators1.cxx, Examples/Iterators/NeighborhoodIterators2.cxx, Examples/Iterators/NeighborhoodIterators3.cxx, Examples/Iterators/NeighborhoodIterators4.cxx, Examples/Iterators/NeighborhoodIterators5.cxx, Examples/Iterators/ShapedNeighborhoodIterators1.cxx, Examples/Iterators/ShapedNeighborhoodIterators2.cxx, Examples/RegistrationITKv4/BSplineWarping1.cxx, Examples/RegistrationITKv4/BSplineWarping2.cxx, Examples/RegistrationITKv4/DeformableRegistration12.cxx, Examples/RegistrationITKv4/DeformableRegistration13.cxx, Examples/RegistrationITKv4/DeformableRegistration14.cxx, Examples/RegistrationITKv4/DeformableRegistration15.cxx, Examples/RegistrationITKv4/DeformableRegistration2.cxx, Examples/RegistrationITKv4/DeformableRegistration5.cxx, Examples/RegistrationITKv4/ThinPlateSplineWarp.cxx, Examples/Segmentation/GibbsPriorImageFilter1.cxx, Examples/SpatialObjects/ImageMaskSpatialObject.cxx, Examples/SpatialObjects/ImageSpatialObject.cxx, and Examples/Statistics/BayesianClassifierInitializer.cxx.

Definition at line 80 of file itkImageRegionIterator.h.

Inheritance diagram for itk::ImageRegionIterator< TImage >:

Collaboration diagram for itk::ImageRegionIterator< TImage >:

Public Types
using	AccessorType

using	ImageType

using	IndexType

using	InternalPixelType

using	OffsetType

using	PixelContainer

using	PixelContainerPointer

using	PixelType

using	RegionType

using	Self = ImageRegionIterator

using	SizeType

using	Superclass = ImageRegionConstIterator<TImage>

Public Types inherited from itk::ImageRegionConstIterator< TImage >
using	AccessorType

using	ImageType

using	IndexType

using	InternalPixelType

using	OffsetType

using	PixelContainer

using	PixelContainerPointer

using	PixelType

using	RegionType

using	Self = ImageRegionConstIterator

using	SizeType

using	Superclass = ImageConstIterator<TImage>

Public Types inherited from itk::ImageConstIterator< TImage >
using	AccessorFunctorType = typename TImage::AccessorFunctorType

using	AccessorType = typename TImage::AccessorType

using	ImageType = TImage

using	IndexType = typename TImage::IndexType

using	InternalPixelType = typename TImage::InternalPixelType

using	OffsetType = typename TImage::OffsetType

using	PixelContainer = typename TImage::PixelContainer

using	PixelContainerPointer = typename PixelContainer::Pointer

using	PixelType = typename TImage::PixelType

using	RegionType = typename TImage::RegionType

using	Self = ImageConstIterator

using	SizeType = typename TImage::SizeType

Public Member Functions
	ImageRegionIterator ()=default

	ImageRegionIterator (const ImageIterator< TImage > &it)

	ImageRegionIterator (ImageType *ptr, const RegionType &region)

void	Set (const PixelType &value) const

PixelType &	Value ()

Public Member Functions inherited from itk::ImageRegionConstIterator< TImage >
const char *	GetNameOfClass () const override

void	GoToBegin ()

void	GoToEnd ()

	ImageRegionConstIterator (const ImageConstIterator< TImage > &it)

	ImageRegionConstIterator (const ImageIterator< TImage > &it)

	ImageRegionConstIterator ()

	ImageRegionConstIterator (const ImageType *ptr, const RegionType &region)

void	SetIndex (const IndexType &ind) override

Self &	operator++ ()

Self &	operator-- ()

Public Member Functions inherited from itk::ImageConstIterator< TImage >
PixelType	Get () const

const ImageType *	GetImage () const

const IndexType	GetIndex () const

const RegionType &	GetRegion () const

void	GoToBegin ()

void	GoToEnd ()

	ImageConstIterator (const Self &it)

bool	IsAtBegin () const

bool	IsAtEnd () const

	ITK_UNEQUAL_OPERATOR_MEMBER_FUNCTION (Self)

bool	operator< (const Self &it) const

bool	operator<= (const Self &it) const

bool	operator== (const Self &it) const

bool	operator> (const Self &it) const

bool	operator>= (const Self &it) const

virtual void	SetRegion (const RegionType &region)

const PixelType &	Value () const

virtual	~ImageConstIterator ()=default

	ImageConstIterator ()

	ImageConstIterator (const ImageType *ptr, const RegionType &region)

Self &	operator= (const Self &it)

Protected Member Functions

	ImageRegionIterator (const ImageRegionConstIterator< TImage > &it)

Self &	operator= (const ImageRegionConstIterator< TImage > &it)

Additional Inherited Members
Static Public Member Functions inherited from itk::ImageConstIterator< TImage >
static unsigned int	GetImageIteratorDimension ()

Static Public Attributes inherited from itk::ImageRegionConstIterator< TImage >
static constexpr unsigned int	ImageIteratorDimension = Superclass::ImageIteratorDimension

Static Public Attributes inherited from itk::ImageConstIterator< TImage >
static constexpr unsigned int	ImageIteratorDimension = TImage::ImageDimension

Protected Attributes inherited from itk::ImageRegionConstIterator< TImage >
OffsetValueType	m_SpanBeginOffset {}

OffsetValueType	m_SpanEndOffset {}

Protected Attributes inherited from itk::ImageConstIterator< TImage >
OffsetValueType	m_BeginOffset {}

const InternalPixelType *	m_Buffer {}

OffsetValueType	m_EndOffset {}

TImage::ConstWeakPointer	m_Image {}

OffsetValueType	m_Offset {}

AccessorType	m_PixelAccessor {}

AccessorFunctorType	m_PixelAccessorFunctor {}

RegionType	m_Region {}

Member Typedef Documentation

◆ AccessorType

template<typename TImage>

using itk::ImageConstIterator< TImage >::AccessorType

Accessor type that convert data between internal and external representations.

Definition at line 137 of file itkImageConstIterator.h.

◆ ImageType

template<typename TImage>

using itk::ImageConstIterator< TImage >::ImageType

Image type alias support

Definition at line 132 of file itkImageConstIterator.h.

◆ IndexType

template<typename TImage>

using itk::ImageConstIterator< TImage >::IndexType

Index type alias support

Definition at line 128 of file itkImageConstIterator.h.

◆ InternalPixelType

template<typename TImage>

using itk::ImageConstIterator< TImage >::InternalPixelType

Internal Pixel Type

Definition at line 135 of file itkImageConstIterator.h.

◆ OffsetType

template<typename TImage>

using itk::ImageConstIterator< TImage >::OffsetType

Offset type alias support

Definition at line 130 of file itkImageConstIterator.h.

◆ PixelContainer

template<typename TImage>

using itk::ImageConstIterator< TImage >::PixelContainer

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

Definition at line 133 of file itkImageConstIterator.h.

◆ PixelContainerPointer

template<typename TImage>

using itk::ImageConstIterator< TImage >::PixelContainerPointer

Definition at line 134 of file itkImageConstIterator.h.

◆ PixelType

template<typename TImage>

using itk::ImageConstIterator< TImage >::PixelType

External Pixel Type

Definition at line 136 of file itkImageConstIterator.h.

◆ RegionType

template<typename TImage>

using itk::ImageConstIterator< TImage >::RegionType

Region type alias support

Definition at line 131 of file itkImageConstIterator.h.

◆ Self

template<typename TImage>

using itk::ImageRegionIterator< TImage >::Self = ImageRegionIterator

Standard class type aliases.

Definition at line 84 of file itkImageRegionIterator.h.

◆ SizeType

template<typename TImage>

using itk::ImageConstIterator< TImage >::SizeType

Size type alias support

Definition at line 129 of file itkImageConstIterator.h.

◆ Superclass

template<typename TImage>

using itk::ImageRegionIterator< TImage >::Superclass = ImageRegionConstIterator<TImage>

Definition at line 85 of file itkImageRegionIterator.h.

Constructor & Destructor Documentation

◆ ImageRegionIterator() [1/4]

template<typename TImage>

itk::ImageRegionIterator< TImage >::ImageRegionIterator ( )

default

Default constructor. Needed since we provide a cast constructor.

◆ ImageRegionIterator() [2/4]

template<typename TImage>

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

Constructor establishes an iterator to walk a particular image and a particular region of that image. Initializes the iterator at the begin of the region.

◆ ImageRegionIterator() [3/4]

template<typename TImage>

itk::ImageRegionIterator< TImage >::ImageRegionIterator ( const ImageIterator< TImage > & it )

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

◆ ImageRegionIterator() [4/4]

template<typename TImage>

itk::ImageRegionIterator< TImage >::ImageRegionIterator ( const ImageRegionConstIterator< TImage > & it )

protected

the construction from a const iterator is declared protected in order to enforce const correctness.

Member Function Documentation

◆ operator=()

template<typename TImage>

Self & itk::ImageRegionIterator< TImage >::operator= ( const ImageRegionConstIterator< TImage > & it )

protected

the construction from a const iterator is declared protected in order to enforce const correctness.

◆ Set()

template<typename TImage>

void itk::ImageRegionIterator< TImage >::Set ( const PixelType & value ) const

inline

Set the pixel value

Definition at line 116 of file itkImageRegionIterator.h.

Referenced by itk::MultiphaseFiniteDifferenceImageFilter< TInputImage, TFeatureImage, TOutputImage, TFunction, TIdCell >::SetLevelSet(), and itk::GradientRecursiveGaussianImageFilter< MovingImageType, GradientImageType >::TransformOutputPixel().

◆ Value()

template<typename TImage>

PixelType & itk::ImageRegionIterator< TImage >::Value ( )

inline

Return a reference to the pixel This method will provide the fastest access to pixel data, but it will NOT support ImageAdaptors.

Definition at line 125 of file itkImageRegionIterator.h.

Referenced by itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::SetOutputPixel().

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

itkImageRegionIterator.h

Detailed Description

Public Types

Public Member Functions

Protected Member Functions

Additional Inherited Members

Member Typedef Documentation

◆ AccessorType

◆ ImageType

◆ IndexType

◆ InternalPixelType

◆ OffsetType

◆ PixelContainer

◆ PixelContainerPointer

◆ PixelType

◆ RegionType

◆ Self

◆ SizeType

◆ Superclass

Constructor & Destructor Documentation

◆ ImageRegionIterator() [1/4]

◆ ImageRegionIterator() [2/4]

◆ ImageRegionIterator() [3/4]

◆ ImageRegionIterator() [4/4]

Member Function Documentation

◆ operator=()

◆ Set()

◆ Value()