itk::NeighborhoodOperator< TPixel, VDimension, TAllocator > Class Template Reference
[Operators]

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

#include <itkNeighborhoodOperator.h>

Inheritance diagram for itk::NeighborhoodOperator:

[legend]Collaboration diagram for itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >:

[legend]List of all members.

Public Types
typedef NeighborhoodOperator	Self
typedef Neighborhood< TPixel, VDimension, TAllocator >	Superclass
typedef Superclass::SizeType	SizeType
typedef TPixel	PixelType
typedef SliceIterator< TPixel, Self >	SliceIteratorType
Public Methods
	NeighborhoodOperator ()
	NeighborhoodOperator (const Self &orig)
void	SetDirection (const unsigned long &direction)
unsigned long	GetDirection () const
virtual void	CreateDirectional ()
virtual void	CreateToRadius (const SizeType &)
virtual void	CreateToRadius (const unsigned long)
virtual void	FlipAxes ()
Self &	operator= (const Self &orig)
virtual void	PrintSelf (std::ostream &os, Indent i) const
Protected Types
typedef std::vector< double >	CoefficientVector
Protected Methods
virtual CoefficientVector	GenerateCoefficients ()=0
virtual void	Fill (const CoefficientVector &)=0
virtual void	FillCenteredDirectional (const CoefficientVector &)
void	InitializeToZero ()

---

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) GenerateScalarCoefficients -- the algorithm that computes the scalar coefficients of the operator.

(2) ScalarFill -- 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 64 of file itkNeighborhoodOperator.h.

---

Member Typedef Documentation

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

Typedef support for coefficient vector type. Necessary to fix bug in the microsoft VC++ compiler. Reimplemented in itk::BackwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::DerivativeOperator< TPixel, VDimension, TAllocator >, itk::ForwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::GaussianOperator< TPixel, VDimension, TAllocator >, itk::LaplacianOperator< TPixel, VDimension, TAllocator >, and itk::SobelOperator< TPixel, VDimension, TAllocator >. Definition at line 141 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 Reimplemented from itk::Neighborhood< TPixel, VDimension, TAllocator >. Reimplemented in itk::BackwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::DerivativeOperator< TPixel, VDimension, TAllocator >, itk::ForwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::LaplacianOperator< TPixel, VDimension, TAllocator >, and itk::SobelOperator< TPixel, VDimension, TAllocator >. Definition at line 76 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. Reimplemented from itk::Neighborhood< TPixel, VDimension, TAllocator >. Reimplemented in itk::BackwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::DerivativeOperator< TPixel, VDimension, TAllocator >, itk::ForwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::GaussianOperator< TPixel, VDimension, TAllocator >, itk::LaplacianOperator< TPixel, VDimension, TAllocator >, and itk::SobelOperator< TPixel, VDimension, TAllocator >. Definition at line 69 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 Reimplemented from itk::Neighborhood< TPixel, VDimension, TAllocator >. Definition at line 73 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 Reimplemented from itk::Neighborhood< TPixel, VDimension, TAllocator >. Definition at line 79 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

Reimplemented in itk::BackwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::DerivativeOperator< TPixel, VDimension, TAllocator >, itk::ForwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::GaussianOperator< TPixel, VDimension, TAllocator >, itk::LaplacianOperator< TPixel, VDimension, TAllocator >, and itk::SobelOperator< TPixel, VDimension, TAllocator >. Definition at line 70 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 82 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 86 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()

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator<TPixel>> virtual void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::CreateToRadius (  const unsigned    long )  [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 >::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 >::Fill (  const CoefficientVector &    )  [protected, pure virtual]

A subclass-specific algorithm that positions the coefficients spatially in the operator. Implemented in itk::BackwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::DerivativeOperator< TPixel, VDimension, TAllocator >, itk::ForwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::GaussianOperator< TPixel, VDimension, TAllocator >, itk::LaplacianOperator< TPixel, VDimension, TAllocator >, and itk::SobelOperator< TPixel, VDimension, TAllocator >.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator<TPixel>> virtual void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::FillCenteredDirectional (  const CoefficientVector &    )  [protected, virtual]

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 (    )  [protected, pure virtual]

A subclass-specific algorithm that computes the coefficients of the operator. Implemented in itk::BackwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::DerivativeOperator< TPixel, VDimension, TAllocator >, itk::ForwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::GaussianOperator< TPixel, VDimension, TAllocator >, itk::LaplacianOperator< TPixel, VDimension, TAllocator >, and itk::SobelOperator< TPixel, VDimension, TAllocator >.

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 104 of file itkNeighborhoodOperator.h.

template<class TPixel, unsigned int VDimension, class TAllocator = NeighborhoodAllocator<TPixel>> void itk::NeighborhoodOperator< TPixel, VDimension, TAllocator >::InitializeToZero (    )  [inline, protected]

Initializes all the coefficients in the neighborhood to zero values Definition at line 159 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. Reimplemented from itk::Neighborhood< TPixel, VDimension, TAllocator >. Reimplemented in itk::DerivativeOperator< TPixel, VDimension, TAllocator >, itk::ForwardDifferenceOperator< TPixel, VDimension, TAllocator >, itk::GaussianOperator< TPixel, VDimension, TAllocator >, itk::LaplacianOperator< TPixel, VDimension, TAllocator >, and itk::SobelOperator< TPixel, VDimension, TAllocator >. Definition at line 91 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 [inline, virtual]

Prints some debugging information. Reimplemented from itk::Neighborhood< TPixel, VDimension, TAllocator >. Reimplemented in itk::DerivativeOperator< TPixel, VDimension, TAllocator >, itk::GaussianOperator< TPixel, VDimension, TAllocator >, itk::LaplacianOperator< TPixel, VDimension, TAllocator >, and itk::SobelOperator< TPixel, VDimension, TAllocator >. Definition at line 130 of file itkNeighborhoodOperator.h.

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 100 of file itkNeighborhoodOperator.h.

---

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

• itkNeighborhoodOperator.h

---