itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType > Class Template Reference
[Finite Difference Functions]

This function is used in ShapeDetectionLevelSetImageFilter to segment structures in images based on user supplied edge potential map. More...

#include <itkShapeDetectionLevelSetFunction.h>

Inheritance diagram for itk::ShapeDetectionLevelSetFunction:

[legend]Collaboration diagram for itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >:

[legend]List of all members.

Public Types
typedef ShapeDetectionLevelSetFunction	Self
typedef SegmentationLevelSetFunction< TImageType >	Superclass
typedef SmartPointer< Self >	Pointer
typedef SmartPointer< const Self >	ConstPointer
typedef TFeatureImageType	FeatureImageType
typedef Superclass::ImageType	ImageType
typedef Superclass::NeighborhoodType	NeighborhoodType
typedef Superclass::ScalarValueType	ScalarValueType
typedef Superclass::FeatureScalarType	FeatureScalarType
typedef Superclass::RadiusType	RadiusType
typedef Superclass::FloatOffsetType	FloatOffsetType
Public Methods
virtual const char *	GetClassName () const
	itkStaticConstMacro (ImageDimension, unsigned int, Superclass::ImageDimension)
virtual void	CalculateSpeedImage ()
virtual ScalarValueType	CurvatureSpeed (const NeighborhoodType &neighborhood, const FloatOffsetType &offset) const
virtual void	Initialize (const RadiusType &r)
Static Public Methods
Pointer	New ()
Protected Methods
	ShapeDetectionLevelSetFunction ()
virtual	~ShapeDetectionLevelSetFunction ()
	ShapeDetectionLevelSetFunction (const Self &)
void	operator= (const Self &)
void	PrintSelf (std::ostream &os, Indent indent) const

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Detailed Description

template<class TImageType, class TFeatureImageType = TImageType>
class itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >

This function is used in ShapeDetectionLevelSetImageFilter to segment structures in images based on user supplied edge potential map.

ShapeDetectionLevelSetFunction is a subclass of the generic LevelSetFunction.

It is useful for segmentations based on a user supplied edge potential map which has values close to zero in regions near edges (or high image gradient) and values close to one in regions with relatively constant intensity. Typically, the edge potential map is a function of the gradient, for example:

where is image intensity and is the derivative of Gaussian operator.

In this function both the propagation term \form#47

and the curvature spatial modifier term $ are taken directly from the edge potential image. The edge potential image is set via the SetFeatureImage() method. Note that there is no advection term in this function.

This implementation is based on:

"Shape Modeling with Front Propagation: A Level Set Approach", R. Malladi, J. A. Sethian and B. C. Vermuri. IEEE Trans. on Pattern Analysis and Machine Intelligence, Vol 17, No. 2, pp 158-174, February 1995

See also:

LevelSetFunction , SegmentationLevelSetImageFunction , ShapeDetectionLevelSetImageFilter

Definition at line 59 of file itkShapeDetectionLevelSetFunction.h.

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Member Typedef Documentation

template<class TImageType, class TFeatureImageType = TImageType> typedef SmartPointer<const Self> itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::ConstPointer

Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 67 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> typedef TFeatureImageType itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::FeatureImageType

Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 68 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> typedef Superclass::FeatureScalarType itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::FeatureScalarType

Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 80 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> typedef Superclass::FloatOffsetType itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::FloatOffsetType

A floating point offset from an image grid location. Used for interpolation among grid values in a neighborhood. Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 82 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> typedef Superclass::ImageType itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::ImageType

Extract some parameters from the superclass. Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 77 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> typedef Superclass::NeighborhoodType itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::NeighborhoodType

The type of data structure that is passed to this function object to evaluate at a pixel that does not lie on a data set boundary. Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 78 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> typedef SmartPointer<Self> itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::Pointer

Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 66 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> typedef Superclass::RadiusType itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::RadiusType

Neighborhood radius type Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 81 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> typedef Superclass::ScalarValueType itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::ScalarValueType

Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 79 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> typedef ShapeDetectionLevelSetFunction itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::Self

Standard class typedefs. Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 64 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> typedef SegmentationLevelSetFunction<TImageType> itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::Superclass

Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 65 of file itkShapeDetectionLevelSetFunction.h.

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Constructor & Destructor Documentation

template<class TImageType, class TFeatureImageType = TImageType> itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::ShapeDetectionLevelSetFunction (    )  [inline, protected]

Definition at line 105 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> virtual itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::~ShapeDetectionLevelSetFunction (    )  [inline, protected, virtual]

Definition at line 111 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::ShapeDetectionLevelSetFunction (  const Self &    )  [protected]

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Member Function Documentation

template<class TImageType, class TFeatureImageType = TImageType> virtual void itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::CalculateSpeedImage (    )  [virtual]

This method must be defined in a subclass to implement a working function object. This method is called before the solver begins its work to produce the speed image used as the level set function's Propagation speed term. See LevelSetFunction for more information. Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >.

template<class TImageType, class TFeatureImageType = TImageType> virtual ScalarValueType itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::CurvatureSpeed (  const NeighborhoodType &    neighborhood, const FloatOffsetType &    offset )  const [inline, virtual]

The curvature speed is same as the propagation speed. Reimplemented from itk::LevelSetFunctionBase< TImageType >. Definition at line 91 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> virtual const char* itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::GetClassName (    )  const [virtual]

Run-time type information (and related methods) Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >.

template<class TImageType, class TFeatureImageType = TImageType> virtual void itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::Initialize (  const RadiusType &    r )  [inline, virtual]

This method creates the appropriate member variable operators for the level-set calculations. The argument to this function is a the radius necessary for performing the level-set calculations. Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >. Definition at line 95 of file itkShapeDetectionLevelSetFunction.h.

template<class TImageType, class TFeatureImageType = TImageType> itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::itkStaticConstMacro (  ImageDimension   , unsigned    int, Superclass::ImageDimension    )

Extract some parameters from the superclass. Reimplemented from itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >.

template<class TImageType, class TFeatureImageType = TImageType> Pointer itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::New (    )  [static]

Method for creation through the object factory. Reimplemented from itk::LevelSetFunction< TImageType >.

template<class TImageType, class TFeatureImageType = TImageType> void itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::operator= (  const Self &    )  [protected]

Reimplemented from itk::LevelSetFunction< TImageType >.

template<class TImageType, class TFeatureImageType = TImageType> void itk::ShapeDetectionLevelSetFunction< TImageType, TFeatureImageType >::PrintSelf (  std::ostream &    os, Indent    indent )  const [inline, 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::LevelSetFunction< TImageType >. Definition at line 116 of file itkShapeDetectionLevelSetFunction.h. References HardConnectedComponentImageFilter::PrintSelf().

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

• itkShapeDetectionLevelSetFunction.h

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