itk::ImageRegionIterator< TImage > Class Template Reference

#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, Examples/Statistics/BayesianClassifierInitializer.cxx, SphinxExamples/src/Core/Common/DeepCopyImage/Code.cxx, SphinxExamples/src/Core/Common/FilterAndParallelizeImageRegion/Code.cxx, SphinxExamples/src/Core/Common/ImageRegionOverlap/Code.cxx, SphinxExamples/src/Core/Common/IterateLineThroughImageWithoutWriteAccess/Code.cxx, SphinxExamples/src/Core/Common/IterateRegionWithWriteAccess/Code.cxx, SphinxExamples/src/Core/Common/MakeOutOfBoundsPixelsReturnConstValue/Code.cxx, SphinxExamples/src/Core/Common/MakePartOfImageTransparent/Code.cxx, SphinxExamples/src/Core/Common/StoreNonPixelDataInImage/Code.cxx, SphinxExamples/src/Core/Common/UseParallelizeImageRegion/Code.cxx, SphinxExamples/src/Core/Common/WatchAFilter/Code.cxx, SphinxExamples/src/Core/ImageAdaptors/AddConstantToPixelsWithoutDuplicatingImage/Code.cxx, SphinxExamples/src/Core/ImageAdaptors/ExtractChannelOfImageWithMultipleComponents/Code.cxx, SphinxExamples/src/Core/ImageAdaptors/PresentImageAfterOperation/Code.cxx, SphinxExamples/src/Core/ImageAdaptors/ProcessNthComponentOfVectorImage/Code.cxx, SphinxExamples/src/Core/ImageAdaptors/ViewComponentVectorImageAsScaleImage/Code.cxx, SphinxExamples/src/Core/ImageFunction/ComputeMedianOfImageAtPixel/Code.cxx, SphinxExamples/src/Filtering/Convolution/ConvolveImageWithKernel/Code.cxx, SphinxExamples/src/Filtering/Convolution/NormalizedCorrelationOfMaskedImage/Code.cxx, SphinxExamples/src/Filtering/Convolution/NormalizedCorrelationUsingFFT/Code.cxx, SphinxExamples/src/Filtering/Convolution/NormalizedCorrelationUsingFFTWithMaskImages/Code.cxx, SphinxExamples/src/Filtering/ImageCompare/AbsValueOfTwoImages/Code.cxx, SphinxExamples/src/Filtering/ImageCompare/SquaredDifferenceOfTwoImages/Code.cxx, SphinxExamples/src/Filtering/ImageCompose/ComposeVectorFromThreeScalarImages/Code.cxx, SphinxExamples/src/Filtering/ImageFilterBase/ApplyKernelToEveryPixelInNonZeroImage/Code.cxx, SphinxExamples/src/Filtering/ImageFilterBase/ComputeLocalNoise/Code.cxx, SphinxExamples/src/Filtering/ImageFusion/ColorBoundariesOfRegions/Code.cxx, SphinxExamples/src/Filtering/ImageFusion/ColorLabeledRegions/Code.cxx, SphinxExamples/src/Filtering/ImageFusion/OverlayLabelMapOnImage/Code.cxx, SphinxExamples/src/Filtering/ImageGradient/GradientOfVectorImage/Code.cxx, SphinxExamples/src/Filtering/ImageGrid/PadImageByWrapping/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/AbsValueOfImage/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/AddConstantToEveryPixel/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/BinaryANDTwoImages/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/BinaryORTwoImages/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/BinaryXORTwoImages/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/CompareTwoImagesAndSetOutputPixelToMax/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/CompareTwoImagesAndSetOutputPixelToMin/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/IntensityWindowing/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/InverseOfMaskToImage/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/MaskImage/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/SquareEveryPixel/Code.cxx, SphinxExamples/src/Filtering/ImageIntensity/SubtractConstantFromEveryPixel/Code.cxx, SphinxExamples/src/Filtering/ImageStatistics/StatisticalPropertiesOfRegions/Code.cxx, SphinxExamples/src/Filtering/LabelMap/ConvertLabelMapToImage/Code.cxx, SphinxExamples/src/Filtering/LabelMap/InvertImageUsingBinaryNot/Code.cxx, SphinxExamples/src/Filtering/LabelMap/KeepRegionsAboveLevel/Code.cxx, SphinxExamples/src/Filtering/LabelMap/KeepRegionsThatMeetSpecific/Code.cxx, SphinxExamples/src/Filtering/LabelMap/LabelBinaryRegionsAndGetProperties/Code.cxx, SphinxExamples/src/Filtering/LabelMap/LabelBinaryRegionsInImage/Code.cxx, SphinxExamples/src/Filtering/Thresholding/SeparateGroundUsingOtsu/Code.cxx, SphinxExamples/src/IO/TIFF/WriteATIFFImage/Code.cxx, SphinxExamples/src/Nonunit/Review/GeometricPropertiesOfRegion/Code.cxx, SphinxExamples/src/Numerics/Statistics/ComputeHistogramOfMaskedRegion/Code.cxx, SphinxExamples/src/Numerics/Statistics/DistributionOfPixelsUsingGMM/Code.cxx, SphinxExamples/src/Registration/Common/RegisterImageToAnotherUsingLandmarks/Code.cxx, SphinxExamples/src/Segmentation/Classifiers/ClusterPixelsInGrayscaleImage/Code.cxx, SphinxExamples/src/Segmentation/Classifiers/KMeansClusterOfPixelsInImage/Code.cxx, SphinxExamples/src/Segmentation/ConnectedComponents/AssignContiguousLabelsToConnectedRegions/Code.cxx, and SphinxExamples/src/Segmentation/Watersheds/MorphologicalWatershedSegmentation/Code.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 = 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 = ImageRegionIterator
using	SizeType = typename TImage::SizeType
using	Superclass = ImageRegionConstIterator< TImage >
Public Types inherited from itk::ImageRegionConstIterator< TImage >
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 = ImageRegionConstIterator
using	SizeType = typename TImage::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 = typename TImage::AccessorType

Accessor type that convert data between internal and external representations.

Definition at line 128 of file itkImageConstIterator.h.

ImageType

template<typename TImage>

using itk::ImageConstIterator< TImage >::ImageType = TImage

Image type alias support

Definition at line 112 of file itkImageConstIterator.h.

IndexType

template<typename TImage>

using itk::ImageConstIterator< TImage >::IndexType = typename TImage::IndexType

Index type alias support

Definition at line 100 of file itkImageConstIterator.h.

InternalPixelType

template<typename TImage>

using itk::ImageConstIterator< TImage >::InternalPixelType = typename TImage::InternalPixelType

Internal Pixel Type

Definition at line 121 of file itkImageConstIterator.h.

OffsetType

template<typename TImage>

using itk::ImageConstIterator< TImage >::OffsetType = typename TImage::OffsetType

Offset type alias support

Definition at line 106 of file itkImageConstIterator.h.

PixelContainer

template<typename TImage>

using itk::ImageConstIterator< TImage >::PixelContainer = typename 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 117 of file itkImageConstIterator.h.

PixelContainerPointer

template<typename TImage>

using itk::ImageConstIterator< TImage >::PixelContainerPointer = typename PixelContainer::Pointer

Definition at line 118 of file itkImageConstIterator.h.

PixelType

template<typename TImage>

using itk::ImageConstIterator< TImage >::PixelType = typename TImage::PixelType

External Pixel Type

Definition at line 124 of file itkImageConstIterator.h.

RegionType

template<typename TImage>

using itk::ImageConstIterator< TImage >::RegionType = typename TImage::RegionType

Region type alias support

Definition at line 109 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 = typename TImage::SizeType

Size type alias support

Definition at line 103 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.

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

Examples

SphinxExamples/src/Core/Common/DeepCopyImage/Code.cxx, SphinxExamples/src/Core/Common/FilterAndParallelizeImageRegion/Code.cxx, SphinxExamples/src/Core/Common/IterateLineThroughImageWithoutWriteAccess/Code.cxx, SphinxExamples/src/Core/Common/StoreNonPixelDataInImage/Code.cxx, SphinxExamples/src/Core/ImageAdaptors/AddConstantToPixelsWithoutDuplicatingImage/Code.cxx, SphinxExamples/src/Filtering/ImageCompose/ComposeVectorFromThreeScalarImages/Code.cxx, SphinxExamples/src/Filtering/ImageFusion/ColorBoundariesOfRegions/Code.cxx, SphinxExamples/src/Filtering/ImageFusion/ColorLabeledRegions/Code.cxx, SphinxExamples/src/Filtering/ImageFusion/OverlayLabelMapOnImage/Code.cxx, SphinxExamples/src/Filtering/ImageGrid/PadImageByWrapping/Code.cxx, SphinxExamples/src/Filtering/ImageStatistics/StatisticalPropertiesOfRegions/Code.cxx, SphinxExamples/src/Filtering/LabelMap/ConvertLabelMapToImage/Code.cxx, SphinxExamples/src/Filtering/LabelMap/KeepRegionsAboveLevel/Code.cxx, SphinxExamples/src/Filtering/LabelMap/KeepRegionsThatMeetSpecific/Code.cxx, SphinxExamples/src/Filtering/LabelMap/LabelBinaryRegionsAndGetProperties/Code.cxx, SphinxExamples/src/Filtering/LabelMap/LabelBinaryRegionsInImage/Code.cxx, and SphinxExamples/src/Nonunit/Review/GeometricPropertiesOfRegion/Code.cxx.

Definition at line 116 of file itkImageRegionIterator.h.

Referenced by itk::GradientRecursiveGaussianImageFilter< TInputImage, TOutputImage >::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().

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

• itkImageRegionIterator.h