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itk::ImageConstIterator< TImage > Class Template Reference
[Image Iterators]

A multi-dimensional image iterator templated over image type. More...

#include <itkImageConstIterator.h>

Inheritance diagram for itk::ImageConstIterator< TImage >:
Inheritance graph
[legend]

List of all members.

Public Types

typedef TImage::AccessorFunctorType AccessorFunctorType
typedef TImage::AccessorType AccessorType
typedef TImage ImageType
typedef TImage::IndexType IndexType
typedef TImage::IndexValueType IndexValueType
typedef TImage::InternalPixelType InternalPixelType
typedef TImage::OffsetType OffsetType
typedef TImage::OffsetValueType OffsetValueType
typedef TImage::PixelContainer PixelContainer
typedef PixelContainer::Pointer PixelContainerPointer
typedef TImage::PixelType PixelType
typedef TImage::RegionType RegionType
typedef ImageConstIterator Self
typedef TImage::SizeType SizeType
typedef TImage::SizeValueType SizeValueType

Public Member Functions

Self Begin (void) const
Self End (void) const
PixelType Get (void) const
const ImageTypeGetImage () const
const IndexType GetIndex () const
const RegionTypeGetRegion () const
void GoToBegin ()
void GoToEnd ()
 ImageConstIterator (const Self &it)
bool IsAtBegin (void) const
bool IsAtEnd (void) const
virtual void SetIndex (const IndexType &ind)
const PixelTypeValue (void) const
virtual ~ImageConstIterator ()

Static Public Attributes

static const unsigned int ImageIteratorDimension = TImage::ImageDimension

Protected Attributes

unsigned long m_BeginOffset
const InternalPixelTypem_Buffer
unsigned long m_EndOffset
TImage::ConstWeakPointer m_Image
unsigned long m_Offset
AccessorType m_PixelAccessor
AccessorFunctorType m_PixelAccessorFunctor
RegionType m_Region



 ImageConstIterator (const ImageType *ptr, const RegionType &region)
 ImageConstIterator ()
bool operator!= (const Self &it) const
bool operator< (const Self &it) const
bool operator<= (const Self &it) const
Selfoperator= (const Self &it)
bool operator== (const Self &it) const
bool operator> (const Self &it) const
bool operator>= (const Self &it) const
static unsigned int GetImageIteratorDimension ()

Detailed Description

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

A multi-dimensional image iterator templated over image type.

ImageConstIterator is a templated class to represent a multi-dimensional iterator. ImageConstIterator is templated over the type of the image to be iterated over.

ImageConstIterator is a base class for all the image iterators. It provides the basic construction and comparison operations. However, it does not provide mechanisms for moving the iterator. A subclass of ImageConstIterator must be used to move the iterator.

ImageConstIterator is a multi-dimensional iterator, requiring 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, ImageConstIterator holds a reference to the image over which it is traversing.

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

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

Definition at line 85 of file itkImageConstIterator.h.


Member Typedef Documentation

template<typename TImage>
typedef TImage::AccessorFunctorType itk::ImageConstIterator< TImage >::AccessorFunctorType

Definition at line 131 of file itkImageConstIterator.h.

template<typename TImage>
typedef TImage::AccessorType itk::ImageConstIterator< TImage >::AccessorType

Accessor type that convert data between internal and external representations.

Reimplemented in itk::ImageIterator< TImage >, itk::ImageRegionConstIterator< TImage >, itk::ImageRegionIterator< TImage >, and itk::ImageRegionConstIterator< ImageType >.

Definition at line 130 of file itkImageConstIterator.h.

template<typename TImage>
typedef TImage itk::ImageConstIterator< TImage >::ImageType
template<typename TImage>
typedef TImage::IndexType itk::ImageConstIterator< TImage >::IndexType
template<typename TImage>
typedef TImage::IndexValueType itk::ImageConstIterator< TImage >::IndexValueType
template<typename TImage>
typedef TImage::InternalPixelType itk::ImageConstIterator< TImage >::InternalPixelType
template<typename TImage>
typedef TImage::OffsetType itk::ImageConstIterator< TImage >::OffsetType

Offset typedef support.

Reimplemented in itk::ImageIterator< TImage >, and itk::ImageRegionIterator< TImage >.

Definition at line 107 of file itkImageConstIterator.h.

template<typename TImage>
typedef TImage::OffsetValueType itk::ImageConstIterator< TImage >::OffsetValueType
template<typename TImage>
typedef TImage::PixelContainer itk::ImageConstIterator< 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 in itk::ImageIterator< TImage >, itk::ImageRegionConstIterator< TImage >, itk::ImageRegionIterator< TImage >, and itk::ImageRegionConstIterator< ImageType >.

Definition at line 119 of file itkImageConstIterator.h.

template<typename TImage>
typedef PixelContainer::Pointer itk::ImageConstIterator< TImage >::PixelContainerPointer
template<typename TImage>
typedef TImage::PixelType itk::ImageConstIterator< TImage >::PixelType
template<typename TImage>
typedef TImage::RegionType itk::ImageConstIterator< TImage >::RegionType
template<typename TImage>
typedef ImageConstIterator itk::ImageConstIterator< TImage >::Self
template<typename TImage>
typedef TImage::SizeType itk::ImageConstIterator< TImage >::SizeType
template<typename TImage>
typedef TImage::SizeValueType itk::ImageConstIterator< TImage >::SizeValueType

Constructor & Destructor Documentation

template<typename TImage>
itk::ImageConstIterator< TImage >::ImageConstIterator (  )  [inline]

Default Constructor. Need to provide a default constructor since we provide a copy constructor.

Definition at line 135 of file itkImageConstIterator.h.

template<typename TImage>
virtual itk::ImageConstIterator< TImage >::~ImageConstIterator (  )  [inline, virtual]

Default Destructor.

Definition at line 150 of file itkImageConstIterator.h.

template<typename TImage>
itk::ImageConstIterator< TImage >::ImageConstIterator ( const Self it  )  [inline]

Copy Constructor. The copy constructor is provided to make sure the handle to the image is properly reference counted.

Definition at line 154 of file itkImageConstIterator.h.

template<typename TImage>
itk::ImageConstIterator< TImage >::ImageConstIterator ( const ImageType ptr,
const RegionType region 
) [inline]

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

Definition at line 171 of file itkImageConstIterator.h.


Member Function Documentation

template<typename TImage>
Self itk::ImageConstIterator< TImage >::Begin ( void   )  const

Return an iterator for the beginning of the region. "Begin" is defined as the first pixel in the region.

Deprecated:
Use GoToBegin() instead.

Reimplemented in itk::ImageIterator< TImage >, itk::ImageRegionConstIterator< TImage >, itk::ImageRegionIterator< TImage >, and itk::ImageRegionConstIterator< ImageType >.

template<typename TImage>
Self itk::ImageConstIterator< TImage >::End ( void   )  const

Return an iterator for the end of the region. "End" is defined as one pixel past the last pixel of the region.

Deprecated:
Use GoToEnd() instead.

Reimplemented in itk::ImageIterator< TImage >, itk::ImageRegionConstIterator< TImage >, itk::ImageRegionIterator< TImage >, and itk::ImageRegionConstIterator< ImageType >.

template<typename TImage>
PixelType itk::ImageConstIterator< TImage >::Get ( void   )  const [inline]

Get the pixel value

Definition at line 326 of file itkImageConstIterator.h.

template<typename TImage>
const ImageType* itk::ImageConstIterator< TImage >::GetImage (  )  const [inline]
template<typename TImage>
static unsigned int itk::ImageConstIterator< TImage >::GetImageIteratorDimension (  )  [inline, static]

Get the dimension (size) of the index.

Definition at line 237 of file itkImageConstIterator.h.

template<typename TImage>
const IndexType itk::ImageConstIterator< TImage >::GetIndex ( void   )  const [inline]

Get the index. This provides a read only reference to the index. This causes the index to be calculated from pointer arithmetic and is therefore an expensive operation.

See also:
SetIndex

Definition at line 308 of file itkImageConstIterator.h.

Referenced by itk::ImageReverseConstIterator< TImage >::ImageReverseConstIterator(), itk::ImageRegionReverseConstIterator< TImage >::operator--(), and itk::ImageReverseConstIterator< TImage >::operator=().

template<typename TImage>
const RegionType& itk::ImageConstIterator< TImage >::GetRegion (  )  const [inline]

Get the region that this iterator walks. ImageConstIterators know the beginning and the end of the region of the image to iterate over.

Definition at line 318 of file itkImageConstIterator.h.

Referenced by itk::ImageReverseConstIterator< TImage >::ImageReverseConstIterator(), and itk::ImageReverseConstIterator< TImage >::operator=().

template<typename TImage>
void itk::ImageConstIterator< TImage >::GoToBegin ( void   )  [inline]

Move an iterator to the beginning of the region. "Begin" is defined as the first pixel in the region.

Reimplemented in itk::ImageRegionConstIterator< TImage >, and itk::ImageRegionConstIterator< ImageType >.

Definition at line 343 of file itkImageConstIterator.h.

template<typename TImage>
void itk::ImageConstIterator< TImage >::GoToEnd (  )  [inline]

Move an iterator to the end of the region. "End" is defined as one pixel past the last pixel of the region.

Reimplemented in itk::ImageRegionConstIterator< TImage >, and itk::ImageRegionConstIterator< ImageType >.

Definition at line 356 of file itkImageConstIterator.h.

template<typename TImage>
bool itk::ImageConstIterator< TImage >::IsAtBegin ( void   )  const [inline]

Is the iterator at the beginning of the region? "Begin" is defined as the first pixel in the region.

Definition at line 363 of file itkImageConstIterator.h.

template<typename TImage>
bool itk::ImageConstIterator< TImage >::IsAtEnd ( void   )  const [inline]

Is the iterator at the end of the region? "End" is defined as one pixel past the last pixel of the region.

Definition at line 370 of file itkImageConstIterator.h.

template<typename TImage>
bool itk::ImageConstIterator< TImage >::operator!= ( const Self it  )  const [inline]

Comparison operator. Two iterators are the same if they "point to" the same memory location

Definition at line 243 of file itkImageConstIterator.h.

template<typename TImage>
bool itk::ImageConstIterator< TImage >::operator< ( const Self it  )  const [inline]

Comparison operator. An iterator is "less than" another if it "points to" a lower memory location.

Definition at line 274 of file itkImageConstIterator.h.

template<typename TImage>
bool itk::ImageConstIterator< TImage >::operator<= ( const Self it  )  const [inline]

Comparison operator. An iterator is "less than" another if it "points to" a lower memory location.

Definition at line 263 of file itkImageConstIterator.h.

template<typename TImage>
Self& itk::ImageConstIterator< TImage >::operator= ( const Self it  )  [inline]

operator= is provided to make sure the handle to the image is properly reference counted.

Definition at line 220 of file itkImageConstIterator.h.

template<typename TImage>
bool itk::ImageConstIterator< TImage >::operator== ( const Self it  )  const [inline]

Comparison operator. Two iterators are the same if they "point to" the same memory location

Definition at line 253 of file itkImageConstIterator.h.

template<typename TImage>
bool itk::ImageConstIterator< TImage >::operator> ( const Self it  )  const [inline]

Comparison operator. An iterator is "greater than" another if it "points to" a higher location.

Definition at line 296 of file itkImageConstIterator.h.

template<typename TImage>
bool itk::ImageConstIterator< TImage >::operator>= ( const Self it  )  const [inline]

Comparison operator. An iterator is "greater than" another if it "points to" a higher location.

Definition at line 285 of file itkImageConstIterator.h.

template<typename TImage>
virtual void itk::ImageConstIterator< TImage >::SetIndex ( const IndexType ind  )  [inline, virtual]

Set the index. No bounds checking is performed.

See also:
GetIndex

Reimplemented in itk::ImageRegionConstIterator< TImage >, and itk::ImageRegionConstIterator< ImageType >.

Definition at line 313 of file itkImageConstIterator.h.

template<typename TImage>
const PixelType& itk::ImageConstIterator< TImage >::Value ( void   )  const [inline]

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

Definition at line 332 of file itkImageConstIterator.h.


Member Data Documentation

template<typename TImage>
const unsigned int itk::ImageConstIterator< TImage >::ImageIteratorDimension = TImage::ImageDimension [static]

Dimension of the image the iterator walks. This constant is needed so functions that are templated over image iterator type (as opposed to being templated over pixel type and dimension) can have compile time access to the dimension of the image that the iterator walks.

Reimplemented in itk::ImageIterator< TImage >, itk::ImageRegionConstIterator< TImage >, and itk::ImageRegionConstIterator< ImageType >.

Definition at line 96 of file itkImageConstIterator.h.

template<typename TImage>
unsigned long itk::ImageConstIterator< TImage >::m_BeginOffset [protected]
template<typename TImage>
const InternalPixelType* itk::ImageConstIterator< TImage >::m_Buffer [protected]
template<typename TImage>
unsigned long itk::ImageConstIterator< TImage >::m_EndOffset [protected]
template<typename TImage>
TImage::ConstWeakPointer itk::ImageConstIterator< TImage >::m_Image [protected]
template<typename TImage>
unsigned long itk::ImageConstIterator< TImage >::m_Offset [protected]
template<typename TImage>
AccessorType itk::ImageConstIterator< TImage >::m_PixelAccessor [protected]
template<typename TImage>
AccessorFunctorType itk::ImageConstIterator< TImage >::m_PixelAccessorFunctor [protected]
template<typename TImage>
RegionType itk::ImageConstIterator< TImage >::m_Region [protected]

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

Generated at Fri Apr 16 22:24:29 2010 for ITK by doxygen 1.6.1 written by Dimitri van Heesch, © 1997-2000