ITK  4.4.0
Insight Segmentation and Registration Toolkit
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itk::NeighborhoodOperator< TPixel, VDimension, TAllocator > Class Template Referenceabstract

#include <itkNeighborhoodOperator.h>

+ Inheritance diagram for itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >:
+ Collaboration diagram for itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >:

Detailed Description

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
class itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >

Virtual class that defines a common interface to all neighborhood operator subtypes.

A NeighborhoodOperator is a set of pixel values that can be applied to a Neighborhood to perform a user-defined operation (i.e. convolution kernel, morphological structuring element). A NeighborhoodOperator is itself a specialized Neighborhood, with functionality to generate its coefficients according to user-defined parameters. Because the operator is a subclass of Neighborhood, it is a valid operand in any of the operations defined on the Neighborhood object (convolution, inner product, etc.).

NeighborhoodOperator is a pure virtual object that must be subclassed to be used. A user's subclass must implement two methods:

(1) GenerateCoefficients – the algorithm that computes the scalar coefficients of the operator.

(2) Fill – the algorithm that places the scalar coefficients into the memory buffer of the operator (arranges them spatially in the neighborhood).

NeighborhoodOperator supports the concept of a "directional operator." A directional operator is defined in this context to be an operator that is applied along a single dimension. Examples of this type of operator are directional derivatives and the individual, directional components of separable processes such as Gaussian smoothing.

How a NeighborhoodOperator is applied to data is up to the user who defines it. One possible use of an operator would be to take its inner product with a neighborhood of values to produce a scalar result. This process effects convolution when applied to successive neighborhoods across a region of interest in an image.

Definition at line 66 of file itkNeighborhoodOperator.h.

Public Types

typedef NumericTraits< TPixel >
::RealType 
PixelRealType
 
typedef TPixel PixelType
 
typedef NeighborhoodOperator Self
 
typedef Superclass::SizeType SizeType
 
typedef SliceIterator< TPixel,
Self
SliceIteratorType
 
typedef Neighborhood< TPixel,
VDimension, TAllocator > 
Superclass
 
- Public Types inherited from itk::Neighborhood< TPixel, VDimension, TAllocator >
typedef TAllocator AllocatorType
 
typedef
AllocatorType::const_iterator 
ConstIterator
 
typedef unsigned int DimensionValueType
 
typedef AllocatorType::iterator Iterator
 
typedef SizeValueType NeighborIndexType
 
typedef Offset< VDimension > OffsetType
 
typedef TPixel PixelType
 
typedef Neighborhood Self
 
typedef SizeType::SizeValueType SizeValueType
 
typedef SliceIterator< TPixel,
Self
SliceIteratorType
 

Public Member Functions

virtual void CreateDirectional ()
 
virtual void CreateToRadius (const SizeType &)
 
virtual void CreateToRadius (const SizeValueType)
 
virtual void FlipAxes ()
 
unsigned long GetDirection () const
 
 NeighborhoodOperator ()
 
 NeighborhoodOperator (const Self &orig)
 
void ScaleCoefficients (PixelRealType)
 
void SetDirection (const unsigned long &direction)
 
Selfoperator= (const Self &orig)
 
virtual void PrintSelf (std::ostream &os, Indent i) const
 
- Public Member Functions inherited from itk::Neighborhood< TPixel, VDimension, TAllocator >
NeighborIndexType GetCenterNeighborhoodIndex () const
 
TPixel GetCenterValue () const
 
virtual NeighborIndexType GetNeighborhoodIndex (const OffsetType &) const
 
OffsetType GetOffset (NeighborIndexType i) const
 
const SizeType GetRadius () const
 
SizeValueType GetRadius (DimensionValueType n) const
 
SizeValueType GetSize (DimensionValueType n) const
 
SizeType GetSize () const
 
std::slice GetSlice (unsigned int) const
 
OffsetValueType GetStride (DimensionValueType axis) const
 
 Neighborhood (const Self &other)
 
bool operator!= (const Self &other) const
 
Selfoperator= (const Self &other)
 
bool operator== (const Self &other) const
 
void Print (std::ostream &os) const
 
void SetRadius (const SizeType &)
 
void SetRadius (const SizeValueType)
 
NeighborIndexType Size () const
 
virtual ~Neighborhood ()
 
 Neighborhood ()
 
Iterator End ()
 
Iterator Begin ()
 
ConstIterator End () const
 
ConstIterator Begin () const
 
TPixel & operator[] (NeighborIndexType i)
 
const TPixel & operator[] (NeighborIndexType i) const
 
TPixel & GetElement (NeighborIndexType i)
 
void SetRadius (const SizeValueType *rad)
 
AllocatorTypeGetBufferReference ()
 
const AllocatorTypeGetBufferReference () const
 
TPixel & operator[] (const OffsetType &o)
 
const TPixel & operator[] (const OffsetType &o) const
 

Protected Types

typedef std::vector
< PixelRealType
CoefficientVector
 

Protected Member Functions

virtual void Fill (const CoefficientVector &)=0
 
virtual void FillCenteredDirectional (const CoefficientVector &)
 
virtual CoefficientVector GenerateCoefficients ()=0
 
void InitializeToZero ()
 
- Protected Member Functions inherited from itk::Neighborhood< TPixel, VDimension, TAllocator >
virtual void Allocate (NeighborIndexType i)
 
virtual void ComputeNeighborhoodOffsetTable ()
 
virtual void ComputeNeighborhoodStrideTable ()
 
void SetSize ()
 

Private Attributes

unsigned long m_Direction
 

Additional Inherited Members

- Public Attributes inherited from itk::Neighborhood< TPixel, VDimension, TAllocator >
typedef::itk::Size< VDimension > RadiusType
 
typedef::itk::Size< VDimension > SizeType
 
- Static Public Attributes inherited from itk::Neighborhood< TPixel, VDimension, TAllocator >
static const unsigned int NeighborhoodDimension = VDimension
 

Member Typedef Documentation

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
typedef std::vector< PixelRealType > itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::CoefficientVector
protected

Typedef support for coefficient vector type. Necessary to fix bug in the microsoft VC++ compiler.

Definition at line 149 of file itkNeighborhoodOperator.h.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
typedef NumericTraits< TPixel >::RealType itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::PixelRealType

Definition at line 140 of file itkNeighborhoodOperator.h.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
typedef TPixel itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::PixelType

External support for pixel type

Definition at line 78 of file itkNeighborhoodOperator.h.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
typedef NeighborhoodOperator itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::Self

Standard class typedefs.

Definition at line 71 of file itkNeighborhoodOperator.h.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
typedef Superclass::SizeType itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::SizeType

Size object typedef support

Definition at line 75 of file itkNeighborhoodOperator.h.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
typedef SliceIterator< TPixel, Self > itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::SliceIteratorType

Slice iterator typedef support

Definition at line 81 of file itkNeighborhoodOperator.h.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
typedef Neighborhood< TPixel, VDimension, TAllocator > itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::Superclass

Definition at line 72 of file itkNeighborhoodOperator.h.

Constructor & Destructor Documentation

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::NeighborhoodOperator ( )
inline

Constructor.

Definition at line 84 of file itkNeighborhoodOperator.h.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::NeighborhoodOperator ( const Self orig)
inline

Copy constructor

Definition at line 88 of file itkNeighborhoodOperator.h.

Member Function Documentation

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
virtual void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::CreateDirectional ( )
virtual

Creates the operator with length only in the specified direction. The radius of the operator will be 0 except along the axis on which the operator will work.

See Also
CreateToRadius
FillCenteredDirectional
SetDirection()
GetDirection()

Reimplemented in itk::SobelOperator< TPixel, VDimension, TAllocator >, itk::SobelOperator< FixedGradientPixelType, itkGetStaticConstMacro(FixedImageDimension) >, and itk::SobelOperator< MovedGradientPixelType, itkGetStaticConstMacro(MovedImageDimension) >.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
virtual void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::CreateToRadius ( const SizeType )
virtual

Creates the operator with a specified radius. The spatial location of the coefficients within the operator is defined by the subclass implementation of the Fill method.

See Also
CreateDirectional
Fill
template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
virtual void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::CreateToRadius ( const SizeValueType  )
virtual

Creates the operator with a specified radius ("square", same length on each side). The spatial location of the coefficients within the operator is defined by the subclass implementation of the Fill method.

See Also
CreateDirectional
Fill
template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
virtual void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::Fill ( const CoefficientVector )
protectedpure virtual
template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
virtual void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::FillCenteredDirectional ( const CoefficientVector )
protectedvirtual

A pre-defined Fill function that can be called by a subclass Fill function to center coefficients along the axis specified by the SetDirection method. Useful for creating directional operators, or centering coefficients in an N-dimensional neighborhood.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
virtual void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::FlipAxes ( )
virtual

Reverses the direction of all axes of the operator by reversing the order of the coefficients.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
virtual CoefficientVector itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::GenerateCoefficients ( )
protectedpure virtual
template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
unsigned long itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::GetDirection ( ) const
inline

Returns the direction (dimension number) of a directional operator.

Definition at line 106 of file itkNeighborhoodOperator.h.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::InitializeToZero ( )
inlineprotected

Initializes all the coefficients in the neighborhood to zero values

Definition at line 167 of file itkNeighborhoodOperator.h.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
Self& itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::operator= ( const Self orig)
inline

Assignment operator.

Definition at line 93 of file itkNeighborhoodOperator.h.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
virtual void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::PrintSelf ( std::ostream &  os,
Indent  i 
) const
inlinevirtual
template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::ScaleCoefficients ( PixelRealType  )

Multiplies all of the coefficients of the kernel by a single scalar value.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::SetDirection ( const unsigned long &  direction)
inline

Sets the dimensional direction of a directional operator.

Definition at line 102 of file itkNeighborhoodOperator.h.

Member Data Documentation

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator< TPixel >>
unsigned long itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::m_Direction
private

Direction (dimension number) of the derivative.

Definition at line 178 of file itkNeighborhoodOperator.h.


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