itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep > Class Template Reference
[Image Functions]

Calculate an entropy satisfying gradient magnitude. More...

#include <itkEntropyPreservingGradientMagnitudeImageFunction.h>

Inheritance diagram for itk::EntropyPreservingGradientMagnitudeImageFunction:

[legend]Collaboration diagram for itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >:

[legend]List of all members.

Public Types
typedef EntropyPreservingGradientMagnitudeImageFunction	Self
typedef ImageFunction< TInputImage, double, TCoordRep >	Superclass
typedef SmartPointer< Self >	Pointer
typedef SmartPointer< const Self >	ConstPointer
typedef TInputImage	InputImageType
typedef InputImageType::ConstPointer	InputImageConstPointer
typedef Superclass::IndexType	IndexType
typedef Superclass::ContinuousIndexType	ContinuousIndexType
typedef Superclass::PointType	PointType
Public Methods
virtual const char *	GetClassName () const
	itkStaticConstMacro (ImageDimension, unsigned int, InputImageType::ImageDimension)
virtual void	SetInputImage (const InputImageType *ptr)
void	SetSpeed (double value)
double	GetSpeed () const
virtual double	EvaluateAtIndex (const IndexType &index) const
double	GetMagnitude () const
virtual double	Evaluate (const PointType &point) const
virtual double	EvaluateAtContinuousIndex (const ContinuousIndexType &cindex) const
Static Public Methods
Pointer	New ()
Protected Methods
	EntropyPreservingGradientMagnitudeImageFunction ()
	~EntropyPreservingGradientMagnitudeImageFunction ()
void	PrintSelf (std::ostream &os, Indent indent) const

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Detailed Description

template<class TInputImage, class TCoordRep = float>
class itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >

Calculate an entropy satisfying gradient magnitude.

EntropyPreservingGradientMagnitudeImageFunction calculates an entropy satisfying image gradient magnitude. This is class is templated over the input image type and the coordinate representation type (e.g. float or double).

In level set methods, the propagating front can form corners as it evolves. At these singularities, the front is no longer differentiable and a weak solution must be constructed to continue the solution.

Viscosity or entropy solution can be formed by using upwind finite differencing. Depending on the flow direction, either a forward or backward differencing scheme is used. This is to ensure that only grid points upstream in the flow is used to update the current point.

In this function, the flow direction can be specified by the sign of the speed value set via the SetSpeed() method.

Reference: "Level Set Methods and Fast Marching Methods", J.A. Sethian, Cambridge Press, Chapter 6, Second edition, 1999.

Possible improvements:

• the use of Neighborhood operators may improve efficiency.

Definition at line 56 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

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Member Typedef Documentation

template<class TInputImage, class TCoordRep = float> typedef SmartPointer<const Self> itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::ConstPointer

Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >. Definition at line 64 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

template<class TInputImage, class TCoordRep = float> typedef Superclass::ContinuousIndexType itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::ContinuousIndexType

ContinuousIndex typedef support. Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >. Definition at line 84 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

template<class TInputImage, class TCoordRep = float> typedef Superclass::IndexType itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::IndexType

Index typedef support. Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >. Definition at line 81 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

template<class TInputImage, class TCoordRep = float> typedef InputImageType::ConstPointer itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::InputImageConstPointer

Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >. Definition at line 74 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

template<class TInputImage, class TCoordRep = float> typedef TInputImage itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::InputImageType

InputImageType typedef support. Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >. Definition at line 73 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

template<class TInputImage, class TCoordRep = float> typedef SmartPointer<Self> itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::Pointer

Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >. Definition at line 63 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

template<class TInputImage, class TCoordRep = float> typedef Superclass::PointType itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::PointType

Point typedef support. Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >. Definition at line 87 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

template<class TInputImage, class TCoordRep = float> typedef EntropyPreservingGradientMagnitudeImageFunction itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::Self

Standard class typedefs. Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >. Definition at line 61 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

template<class TInputImage, class TCoordRep = float> typedef ImageFunction<TInputImage, double, TCoordRep> itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::Superclass

Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >. Definition at line 62 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

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Constructor & Destructor Documentation

template<class TInputImage, class TCoordRep = float> itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::EntropyPreservingGradientMagnitudeImageFunction (    )  [inline, protected]

Definition at line 127 of file itkEntropyPreservingGradientMagnitudeImageFunction.h. References HardConnectedComponentImageFilter::PrintSelf().

template<class TInputImage, class TCoordRep = float> itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::~EntropyPreservingGradientMagnitudeImageFunction (    )  [inline, protected]

Definition at line 128 of file itkEntropyPreservingGradientMagnitudeImageFunction.h. References HardConnectedComponentImageFilter::IndexType.

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Member Function Documentation

template<class TInputImage, class TCoordRep = float> virtual double itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::Evaluate (  const PointType &    point )  const [inline, virtual]

Evaluate the function at non-integer positions. Implements itk::ImageFunction< TInputImage, double, TCoordRep >. Definition at line 104 of file itkEntropyPreservingGradientMagnitudeImageFunction.h. References HardConnectedComponentImageFilter::IndexType.

template<class TInputImage, class TCoordRep = float> virtual double itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::EvaluateAtContinuousIndex (  const ContinuousIndexType &    cindex )  const [inline, virtual]

Evaluate the function at continuous positions. Implements itk::ImageFunction< TInputImage, double, TCoordRep >. Definition at line 113 of file itkEntropyPreservingGradientMagnitudeImageFunction.h. References HardConnectedComponentImageFilter::IndexType.

template<class TInputImage, class TCoordRep = float> virtual double itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::EvaluateAtIndex (  const IndexType &    index )  const [virtual]

Evalulate the function at specified index Implements itk::ImageFunction< TInputImage, double, TCoordRep >.

template<class TInputImage, class TCoordRep = float> virtual const char* itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::GetClassName (    )  const [virtual]

Run-time type information (and related methods). Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >.

template<class TInputImage, class TCoordRep = float> double itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::GetMagnitude (    )  const [inline]

Get the magnitude from last evaluation Definition at line 123 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

template<class TInputImage, class TCoordRep = float> double itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::GetSpeed (    )  const [inline]

Get the speed parameter. Definition at line 97 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

template<class TInputImage, class TCoordRep = float> itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::itkStaticConstMacro (  ImageDimension   , unsigned    int, InputImageType::ImageDimension    )

Dimension of the underlying image.

template<class TInputImage, class TCoordRep = float> Pointer itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::New (    )  [static]

Method for creation through the object factory. Reimplemented from itk::Object.

template<class TInputImage, class TCoordRep = float> void itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::PrintSelf (  std::ostream &    os, Indent    indent )  const [protected, virtual]

Methods invoked by Print() to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes. Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >.

template<class TInputImage, class TCoordRep = float> virtual void itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::SetInputImage (  const InputImageType *    ptr )  [virtual]

Set the input image. Reimplemented from itk::ImageFunction< TInputImage, double, TCoordRep >.

template<class TInputImage, class TCoordRep = float> void itk::EntropyPreservingGradientMagnitudeImageFunction< TInputImage, TCoordRep >::SetSpeed (  double    value )  [inline]

Set the speed parameter. Definition at line 93 of file itkEntropyPreservingGradientMagnitudeImageFunction.h.

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

• itkEntropyPreservingGradientMagnitudeImageFunction.h

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