ITK  5.0.0
Insight Segmentation and Registration Toolkit
Public Types | Public Member Functions | Static Public Attributes | Private Attributes | List of all members
itk::ConstantBoundaryCondition< TInputImage, TOutputImage > Class Template Reference
Data Representation Objects | Image Representation Objects | Module ITKCommon

#include <itkConstantBoundaryCondition.h>

+ Inheritance diagram for itk::ConstantBoundaryCondition< TInputImage, TOutputImage >:
+ Collaboration diagram for itk::ConstantBoundaryCondition< TInputImage, TOutputImage >:

Detailed Description

template<typename TInputImage, typename TOutputImage = TInputImage>
class itk::ConstantBoundaryCondition< TInputImage, TOutputImage >

This boundary condition returns a constant value for out-of-bounds image pixels.

For example, invoking this function object with a constant value of zero (the default) on each out-of-bounds element of a 7x5 iterator that masks a region at an image corner (iterator is centered on the 2): 

          * * * * * * *
          * * * * * * *
          * * 1 2 3 4 5  (where * denotes pixels that lie
          * * 3 3 5 5 6          outside of the image boundary)
          * * 4 4 6 7 8

would produce the following neighborhood of values: 

          0 0 0 0 0 0 0
          0 0 0 0 0 0 0
          0 0 1 2 3 4 5
          0 0 3 3 5 5 6
          0 0 4 4 6 7 8
Note
If you are using an image with Array as the pixel type, you will need to set the constant explicitly with an array of the appropriate length. This is also true if your image type is a VectorImage.
See Also
ImageBoundaryCondition
Wiki Examples:
Examples:
WikiExamples/Iterators/ConstantBoundaryCondition.cxx.

Definition at line 67 of file itkConstantBoundaryCondition.h.

Public Types

using IndexType = typename Superclass::IndexType
 
using NeighborhoodAccessorFunctorType = typename Superclass::NeighborhoodAccessorFunctorType
 
using NeighborhoodType = typename Superclass::NeighborhoodType
 
using OffsetType = typename Superclass::OffsetType
 
using OutputPixelType = typename Superclass::OutputPixelType
 
using PixelPointerType = typename Superclass::PixelPointerType
 
using PixelType = typename Superclass::PixelType
 
using RegionType = typename Superclass::RegionType
 
using Self = ConstantBoundaryCondition
 
using SizeType = typename Superclass::SizeType
 
using Superclass = ImageBoundaryCondition< TInputImage, TOutputImage >
 
- Public Types inherited from itk::ImageBoundaryCondition< TInputImage, TOutputImage >
using IndexType = Index< ImageDimension >
 
using InputImageType = TInputImage
 
using NeighborhoodAccessorFunctorType = typename TInputImage::NeighborhoodAccessorFunctorType
 
using NeighborhoodType = Neighborhood< PixelPointerType, ImageDimension >
 
using OffsetType = Offset< ImageDimension >
 
using OutputImageType = TOutputImage
 
using OutputPixelType = typename TOutputImage::PixelType
 
using PixelPointerType = typename TInputImage::InternalPixelType *
 
using PixelType = typename TInputImage::PixelType
 
using RegionType = ImageRegion< ImageDimension >
 
using Self = ImageBoundaryCondition
 
using SizeType = Size< ImageDimension >
 

Public Member Functions

 ConstantBoundaryCondition ()
 
const OutputPixelType & GetConstant () const
 
RegionType GetInputRequestedRegion (const RegionType &inputLargestPossibleRegion, const RegionType &outputRequestedRegion) const override
 
const char * GetNameOfClass () const override
 
OutputPixelType GetPixel (const IndexType &index, const TInputImage *image) const override
 
template<typename TPixel >
void Initialize (const VariableLengthVector< TPixel > *)
 
OutputPixelType operator() (const OffsetType &, const OffsetType &, const NeighborhoodType *) const override
 
OutputPixelType operator() (const OffsetType &, const OffsetType &, const NeighborhoodType *, const NeighborhoodAccessorFunctorType &) const override
 
void Print (std::ostream &os, Indent i=0) const override
 
bool RequiresCompleteNeighborhood () override
 
void SetConstant (const OutputPixelType &c)
 
- Public Member Functions inherited from itk::ImageBoundaryCondition< TInputImage, TOutputImage >
virtual OutputPixelType GetPixel (const IndexType &index, const TInputImage *image) const =0
 
 ImageBoundaryCondition ()=default
 
virtual OutputPixelType operator() (const OffsetType &point_index, const OffsetType &boundary_offset, const NeighborhoodType *data) const =0
 
virtual OutputPixelType operator() (const OffsetType &point_index, const OffsetType &boundary_offset, const NeighborhoodType *data, const NeighborhoodAccessorFunctorType &neighborhoodAccessorFunctor) const =0
 
virtual ~ImageBoundaryCondition ()=default
 
virtual RegionType GetInputRequestedRegion (const RegionType &inputLargestPossibleRegion, const RegionType &outputRequestedRegion) const
 

Static Public Attributes

static constexpr unsigned int ImageDimension = Superclass::ImageDimension
 
- Static Public Attributes inherited from itk::ImageBoundaryCondition< TInputImage, TOutputImage >
static constexpr unsigned int ImageDimension = TInputImage::ImageDimension
 

Private Attributes

OutputPixelType m_Constant
 

Member Typedef Documentation

template<typename TInputImage, typename TOutputImage = TInputImage>
using itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::IndexType = typename Superclass::IndexType

Definition at line 80 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
using itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::NeighborhoodAccessorFunctorType = typename Superclass::NeighborhoodAccessorFunctorType

Definition at line 85 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
using itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::NeighborhoodType = typename Superclass::NeighborhoodType

Definition at line 83 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
using itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::OffsetType = typename Superclass::OffsetType

Definition at line 82 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
using itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::OutputPixelType = typename Superclass::OutputPixelType

Definition at line 78 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
using itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::PixelPointerType = typename Superclass::PixelPointerType

Definition at line 77 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
using itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::PixelType = typename Superclass::PixelType

Extract information from the image type

Definition at line 76 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
using itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::RegionType = typename Superclass::RegionType

Definition at line 79 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
using itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::Self = ConstantBoundaryCondition

Self & superclass type alias

Definition at line 72 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
using itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::SizeType = typename Superclass::SizeType

Definition at line 81 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
using itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::Superclass = ImageBoundaryCondition< TInputImage, TOutputImage >

Definition at line 73 of file itkConstantBoundaryCondition.h.

Constructor & Destructor Documentation

template<typename TInputImage, typename TOutputImage = TInputImage>
itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::ConstantBoundaryCondition ( )

Default constructor.

Member Function Documentation

template<typename TInputImage, typename TOutputImage = TInputImage>
const OutputPixelType& itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::GetConstant ( ) const

Get the value of the constant.

template<typename TInputImage, typename TOutputImage = TInputImage>
RegionType itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::GetInputRequestedRegion ( const RegionType &  inputLargestPossibleRegion,
const RegionType &  outputRequestedRegion 
) const
override

Determines the necessary input region for the output region. For this boundary condition, only the intersection of the largest possible image region and the output requested region is needed.

Parameters
inputLargestPossibleRegionLargest possible region of the input image.
outputRequestedRegionThe output requested region.
Returns
The necessary input region required to determine the pixel values in the outputRequestedRegion.
template<typename TInputImage, typename TOutputImage = TInputImage>
const char* itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::GetNameOfClass ( ) const
inlineoverridevirtual

Runtime information support.

Reimplemented from itk::ImageBoundaryCondition< TInputImage, TOutputImage >.

Definition at line 94 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
OutputPixelType itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::GetPixel ( const IndexType &  index,
const TInputImage *  image 
) const
override

Returns a value for a given pixel at an index. If the index is inside the bounds of the input image, then the pixel value is obtained from the input image. Otherwise, the constant value is returned.

Parameters
indexThe index of the desired pixel.
imageThe image from which pixel values should be determined.
template<typename TInputImage, typename TOutputImage = TInputImage>
template<typename TPixel >
void itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::Initialize ( const VariableLengthVector< TPixel > *  )

Special version of initialize for images with pixel type VariableLengthVector.

template<typename TInputImage, typename TOutputImage = TInputImage>
OutputPixelType itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::operator() ( const OffsetType &  ,
const OffsetType &  ,
const NeighborhoodType *   
) const
override

Computes and returns appropriate out-of-bounds values from neighborhood iterator data.

template<typename TInputImage, typename TOutputImage = TInputImage>
OutputPixelType itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::operator() ( const OffsetType &  ,
const OffsetType &  ,
const NeighborhoodType *  ,
const NeighborhoodAccessorFunctorType &   
) const
override

Computes and returns the appropriate pixel value from neighborhood iterator data, using the functor.

template<typename TInputImage, typename TOutputImage = TInputImage>
void itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::Print ( std::ostream &  os,
Indent  i = 0 
) const
overridevirtual

Utility for printing the boundary condition.

Reimplemented from itk::ImageBoundaryCondition< TInputImage, TOutputImage >.

template<typename TInputImage, typename TOutputImage = TInputImage>
bool itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::RequiresCompleteNeighborhood ( )
inlineoverridevirtual

Tell if the boundary condition can index to any location within the associated iterator's neighborhood or if it has some limited subset (such as none) that it relies upon.

Reimplemented from itk::ImageBoundaryCondition< TInputImage, TOutputImage >.

Definition at line 130 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
void itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::SetConstant ( const OutputPixelType &  c)

Set the value of the constant.

Referenced by itk::BoxAccumulateFunction(), and itk::BoxSquareAccumulateFunction().

Member Data Documentation

template<typename TInputImage, typename TOutputImage = TInputImage>
constexpr unsigned int itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::ImageDimension = Superclass::ImageDimension
static

Save the image dimension.

Definition at line 88 of file itkConstantBoundaryCondition.h.

template<typename TInputImage, typename TOutputImage = TInputImage>
OutputPixelType itk::ConstantBoundaryCondition< TInputImage, TOutputImage >::m_Constant
private

Definition at line 154 of file itkConstantBoundaryCondition.h.

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