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

The LevelSetFunction class is a generic function object which can be used to create a level set method filter when combined with an appropriate finite difference image filter. (See FiniteDifferenceImageFilter.). More...

#include <itkLevelSetFunction.h>

Inheritance diagram for itk::LevelSetFunction< TImageType >:

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Collaboration diagram for itk::LevelSetFunction< TImageType >:

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Detailed Description

template<class TImageType>
class itk::LevelSetFunction< TImageType >

The LevelSetFunction class is a generic function object which can be used to create a level set method filter when combined with an appropriate finite difference image filter. (See FiniteDifferenceImageFilter.).

LevelSetFunction implements a generic level set function. This function is an expanded form of the basic equation developed in [1].

$\phi_{t} + \alpha \stackrel{\rightharpoonup}{A}(\mathbf{x})\cdot\nabla\phi + \beta P(\mathbf{x})\mid\nabla\phi\mid = \gamma Z(\mathbf{x})\kappa\mid\nabla\phi\mid$

where $\stackrel{\rightharpoonup}{A}$ is an advection term, $ P $ is a propagation (growth) term, and $ Z $ is a spatial modifier term for the mean curvature $\kappa$ . $\alpha$ , $\beta$ , and $\gamma$ are all scalar constants.

Terms in the equation above are supplied through virtual methods, which must be subclassed to complete an implementation. Terms can be eliminated from the equation by setting the corresponding constants to zero. A wide variety of level set methods can be implemented by subclassing this basic equation.

In ITK, the usual sign convention is that the INSIDE of a surface contains NEGATIVE values and the OUTSIDE of the surface contains POSITIVE values.

Warning:: You MUST call Initialize() in the constructor of subclasses of this object to set it up properly to do level-set Calculations. The argument that you pass Initialize is the radius of the neighborhood needed to perform the calculations. If your subclass does not do any additional neighborhood processing, then the default radius should be 1 in each direction.

REFERENCES

: [1] Sethian, J.A. Level Set Methods. Cambridge University Press. 1996.

Definition at line 64 of file itkLevelSetFunction.h.

Member Typedef Documentation

template<class TImageType>

typedef SmartPointer<const Self> itk::LevelSetFunction< TImageType >::ConstPointer

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

Definition at line 72 of file itkLevelSetFunction.h.

typedef ZeroFluxNeumannBoundaryCondition<ImageType> itk::FiniteDifferenceFunction< TImageType >::DefaultBoundaryConditionType [inherited]

The default boundary condition for finite difference functions that is used unless overridden in the Evaluate() method.

Definition at line 92 of file itkFiniteDifferenceFunction.h.

template<class TImageType>

typedef Superclass::FloatOffsetType itk::LevelSetFunction< TImageType >::FloatOffsetType

A floating point offset from an image grid location. Used for interpolation among grid values in a neighborhood.

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

Definition at line 92 of file itkLevelSetFunction.h.

template<class TImageType>

typedef Superclass::ImageType itk::LevelSetFunction< TImageType >::ImageType

Extract some parameters from the image type

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

Definition at line 85 of file itkLevelSetFunction.h.

typedef int itk::LightObject::InternalReferenceCountType [protected, inherited]

Define the type of the reference count according to the target. This allows the use of atomic operations

Definition at line 139 of file itkLightObject.h.

template<class TImageType>

typedef Superclass::NeighborhoodScalesType itk::LevelSetFunction< TImageType >::NeighborhoodScalesType

The type of data structure that holds the scales with which the neighborhood is weighted to properly account for spacing and neighborhood radius.

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

Reimplemented in itk::LevelSetFunctionWithRefitTerm< TImageType, TSparseImageType >.

Definition at line 91 of file itkLevelSetFunction.h.

template<class TImageType>

typedef Superclass::NeighborhoodType itk::LevelSetFunction< TImageType >::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::FiniteDifferenceFunction< TImageType >.

Definition at line 90 of file itkLevelSetFunction.h.

template<class TImageType>

typedef Superclass::PixelRealType itk::LevelSetFunction< TImageType >::PixelRealType

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

Reimplemented in itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >, and itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >.

Definition at line 88 of file itkLevelSetFunction.h.

template<class TImageType>

typedef Superclass::PixelType itk::LevelSetFunction< TImageType >::PixelType

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

Reimplemented in itk::CurvesLevelSetFunction< TImageType, TFeatureImageType >, itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >, and itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >.

Definition at line 86 of file itkLevelSetFunction.h.

template<class TImageType>

typedef SmartPointer<Self> itk::LevelSetFunction< TImageType >::Pointer

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

Definition at line 71 of file itkLevelSetFunction.h.

template<class TImageType>

typedef Superclass::RadiusType itk::LevelSetFunction< TImageType >::RadiusType

Neighborhood radius type

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

Definition at line 89 of file itkLevelSetFunction.h.

template<class TImageType>

typedef PixelType itk::LevelSetFunction< TImageType >::ScalarValueType

Definition at line 87 of file itkLevelSetFunction.h.

template<class TImageType>

typedef LevelSetFunction itk::LevelSetFunction< TImageType >::Self

Standard class typedefs.

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

Definition at line 69 of file itkLevelSetFunction.h.

template<class TImageType>

typedef FiniteDifferenceFunction<TImageType> itk::LevelSetFunction< TImageType >::Superclass

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

Definition at line 70 of file itkLevelSetFunction.h.

template<class TImageType>

typedef double itk::LevelSetFunction< TImageType >::TimeStepType

Convenient typedefs.

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

Reimplemented in itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >, itk::LevelSetFunctionWithRefitTerm< TImageType, TSparseImageType >, and itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >.

Definition at line 84 of file itkLevelSetFunction.h.

template<class TImageType>

typedef FixedArray<ScalarValueType, itkGetStaticConstMacro(ImageDimension)> itk::LevelSetFunction< TImageType >::VectorType

The vector type that will be used in the calculations.

Reimplemented in itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >, and itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >.

Definition at line 96 of file itkLevelSetFunction.h.

Constructor & Destructor Documentation

template<class TImageType>

itk::LevelSetFunction< TImageType >::LevelSetFunction ( ) [inline, protected]

Definition at line 295 of file itkLevelSetFunction.h.

template<class TImageType>

virtual itk::LevelSetFunction< TImageType >::~LevelSetFunction ( ) [inline, protected, virtual]

Definition at line 303 of file itkLevelSetFunction.h.

Member Function Documentation

template<class TImageType>

virtual VectorType itk::LevelSetFunction< TImageType >::AdvectionField	(	const NeighborhoodType &	,
		const FloatOffsetType &	,
		GlobalDataStruct *	= `0`
	)			const `[inline, virtual]`

Advection field. Default implementation returns a vector of zeros.

Definition at line 124 of file itkLevelSetFunction.h.

static void itk::LightObject::BreakOnError ( ) [static, inherited]

This method is called when itkExceptionMacro executes. It allows the debugger to break on error.

template<class TImageType>

virtual ScalarValueType itk::LevelSetFunction< TImageType >::Compute3DMinimalCurvature	(	const NeighborhoodType &	,
		const FloatOffsetType &	,
		GlobalDataStruct *	gd = `0`
	)			`[virtual]`

template<class TImageType>

virtual ScalarValueType itk::LevelSetFunction< TImageType >::ComputeCurvatureTerm	(	const NeighborhoodType &	,
		const FloatOffsetType &	,
		GlobalDataStruct *	gd = `0`
	)			`[virtual]`

template<class TImageType>

virtual TimeStepType itk::LevelSetFunction< TImageType >::ComputeGlobalTimeStep ( void * GlobalData ) const [virtual]

Computes the time step for an update given a global data structure. The data used in the computation may take different forms depending on the nature of the equations. This global data cannot be kept in the instance of the equation object itself since the equation object must remain stateless for thread safety. The global data is therefore managed for each thread by the finite difference solver filters.

Implements itk::FiniteDifferenceFunction< TImageType >.

Reimplemented in itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >, itk::LevelSetFunctionWithRefitTerm< TImageType, TSparseImageType >, and itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >.

template<class TImageType>

virtual ScalarValueType itk::LevelSetFunction< TImageType >::ComputeMeanCurvature	(	const NeighborhoodType &	,
		const FloatOffsetType &	,
		GlobalDataStruct *	gd = `0`
	)			`[virtual]`

template<class TImageType>

virtual ScalarValueType itk::LevelSetFunction< TImageType >::ComputeMinimalCurvature	(	const NeighborhoodType &	,
		const FloatOffsetType &	,
		GlobalDataStruct *	gd = `0`
	)			`[virtual]`

const NeighborhoodScalesType itk::FiniteDifferenceFunction< TImageType >::ComputeNeighborhoodScales ( ) const [inherited]

Compute the scales that weight the neighborhood during difference operations to properly account for spacing and neighborhood radius

template<class TImageType>

virtual PixelType itk::LevelSetFunction< TImageType >::ComputeUpdate	(	const NeighborhoodType &	neighborhood,
		void *	globalData,
		const FloatOffsetType &	= `FloatOffsetType(0.0)`
	)			`[virtual]`

Compute the equation value.

Implements itk::FiniteDifferenceFunction< TImageType >.

Reimplemented in itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >, and itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >.

virtual Pointer itk::LightObject::CreateAnother ( ) const [virtual, inherited]

Create an object from an instance, potentially deferring to a factory. This method allows you to create an instance of an object that is exactly the same type as the referring object. This is useful in cases where an object has been cast back to a base class.

Reimplemented in itk::Object.

template<class TImageType>

virtual ScalarValueType itk::LevelSetFunction< TImageType >::CurvatureSpeed	(	const NeighborhoodType &	,
		const FloatOffsetType &	,
		GlobalDataStruct *	= `0`
	)			const `[inline, virtual]`

Curvature speed. Can be used to spatially modify the effects of curvature . The default implementation returns one.

Definition at line 137 of file itkLevelSetFunction.h.

virtual void itk::LightObject::Delete ( ) [virtual, inherited]

Delete an itk object. This method should always be used to delete an object when the new operator was used to create it. Using the C delete method will not work with reference counting.

template<class TImageType>

ScalarValueType itk::LevelSetFunction< TImageType >::GetAdvectionWeight ( ) const [inline]

Alpha. Scales all advection term values.

Definition at line 152 of file itkLevelSetFunction.h.

template<class TImageType>

ScalarValueType itk::LevelSetFunction< TImageType >::GetCurvatureWeight ( ) const [inline]

Gamma. Scales all curvature weight values

Definition at line 166 of file itkLevelSetFunction.h.

template<class TImageType>

ScalarValueType itk::LevelSetFunction< TImageType >::GetEpsilonMagnitude ( ) const [inline]

Epsilon.

Definition at line 180 of file itkLevelSetFunction.h.

template<class TImageType>

virtual void* itk::LevelSetFunction< TImageType >::GetGlobalDataPointer ( ) const [inline, virtual]

Returns a pointer to a global data structure that is passed to this object from the solver at each calculation. The idea is that the solver holds the state of any global values needed to calculate the time step, while the equation object performs the actual calculations. The global data should also be initialized in this method. Global data can be used for caching any values used or reused by the FunctionObject. Each thread should receive its own global data struct.

Implements itk::FiniteDifferenceFunction< TImageType >.

Reimplemented in itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >, and itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >.

Definition at line 204 of file itkLevelSetFunction.h.

template<class TImageType>

ScalarValueType itk::LevelSetFunction< TImageType >::GetLaplacianSmoothingWeight ( ) const [inline]

Weight of the laplacian smoothing term

Definition at line 173 of file itkLevelSetFunction.h.

template<class TImageType>

static double itk::LevelSetFunction< TImageType >::GetMaximumCurvatureTimeStep ( ) [inline, static]

Set/Get the maximum constraint for the curvature term factor in the time step calculation. Changing this value from the default is not recommended or necessary, but can be used to speed up the surface evolution at the risk of creating an unstable solution.

Definition at line 274 of file itkLevelSetFunction.h.

template<class TImageType>

static double itk::LevelSetFunction< TImageType >::GetMaximumPropagationTimeStep ( ) [inline, static]

Set/Get the maximum constraint for the scalar/vector term factor of the time step calculation. Changing this value from the default is not recommended or necessary, but can be used to speed up the surface evolution at the risk of creating an unstable solution.

Definition at line 288 of file itkLevelSetFunction.h.

template<class TImageType>

virtual const char* itk::LevelSetFunction< TImageType >::GetNameOfClass ( ) const [virtual]

Run-time type information (and related methods)

Reimplemented from itk::FiniteDifferenceFunction< TImageType >.

template<class TImageType>

ScalarValueType itk::LevelSetFunction< TImageType >::GetPropagationWeight ( ) const [inline]

Beta. Scales all propagation term values.

Definition at line 159 of file itkLevelSetFunction.h.

const RadiusType& itk::FiniteDifferenceFunction< TImageType >::GetRadius ( void ) const [inline, inherited]

Returns the radius of the neighborhood this FiniteDifferenceFunction needs to perform its calculations.

Definition at line 146 of file itkFiniteDifferenceFunction.h.

virtual int itk::LightObject::GetReferenceCount ( ) const [inline, virtual, inherited]

Gets the reference count on this object.

Definition at line 106 of file itkLightObject.h.

template<class TImageType>

bool itk::LevelSetFunction< TImageType >::GetUseMinimalCurvature ( ) const [inline]

Definition at line 252 of file itkLevelSetFunction.h.

template<class TImageType>

virtual void itk::LevelSetFunction< TImageType >::Initialize ( const RadiusType & r ) [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 in itk::SegmentationLevelSetFunction< TImageType, TFeatureImageType >.

virtual void itk::FiniteDifferenceFunction< TImageType >::InitializeIteration ( ) [inline, virtual, inherited]

This method allows the function to set its state before each iteration of the finite difference solver (image filter) that uses it. This is a thread-safe time to manipulate the object's state.

An example of how this can be used: the Anisotropic diffusion class of FiniteDifferenceFunctions use this method to pre-calculate an average gradient magnitude across the entire image region. This value is set in the function object and used by the ComputeUpdate methods that are called at each pixel as a constant.

Definition at line 118 of file itkFiniteDifferenceFunction.h.

template<class TImageType>

static VectorType itk::LevelSetFunction< TImageType >::InitializeZeroVectorConstant ( ) [static, protected]

This method's only purpose is to initialize the zero vector constant.

itk::FiniteDifferenceFunction< TImageType >::itkStaticConstMacro	(	ImageDimension	,
		unsigned	int,
		ImageType::ImageDimension
	)			`[inherited]`

Save image dimension.

template<class TImageType>

itk::LevelSetFunction< TImageType >::itkStaticConstMacro	(	ImageDimension	,
		unsigned	int,
		Superclass::ImageDimension
	)

Extract some parameters from the superclass.

template<class TImageType>

virtual ScalarValueType itk::LevelSetFunction< TImageType >::LaplacianSmoothingSpeed	(	const NeighborhoodType &	,
		const FloatOffsetType &	,
		GlobalDataStruct *	= `0`
	)			const `[inline, virtual]`

Laplacian smoothing speed. Can be used to spatially modify the effects of laplacian smoothing of the level set function

Definition at line 144 of file itkLevelSetFunction.h.

template<class TImageType>

static Pointer itk::LevelSetFunction< TImageType >::New ( ) [static]

Method for creation through the object factory.

Reimplemented from itk::LightObject.

void itk::LightObject::Print	(	std::ostream &	os,
		Indent	indent = `0`
	)			const `[inherited]`

Cause the object to print itself out.

Referenced by itk::WeakPointer< ProcessObject >::Print().

virtual void itk::LightObject::PrintHeader	(	std::ostream &	os,
		Indent	indent
	)			const `[protected, virtual, inherited]`

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.

template<class TImageType>

void itk::LevelSetFunction< TImageType >::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::FiniteDifferenceFunction< TImageType >.

Reimplemented in itk::CurvesLevelSetFunction< TImageType, TFeatureImageType >, itk::GeodesicActiveContourLevelSetFunction< TImageType, TFeatureImageType >, itk::GeodesicActiveContourShapePriorLevelSetFunction< TImageType, TFeatureImageType >, itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >, itk::ThresholdSegmentationLevelSetFunction< TImageType, TFeatureImageType >, itk::VectorThresholdSegmentationLevelSetFunction< TImageType, TFeatureImageType >, itk::LevelSetFunctionWithRefitTerm< TImageType, TSparseImageType >, and itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >.

virtual void itk::LightObject::PrintTrailer	(	std::ostream &	os,
		Indent	indent
	)			const `[protected, virtual, inherited]`

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.

template<class TImageType>

virtual ScalarValueType itk::LevelSetFunction< TImageType >::PropagationSpeed	(	const NeighborhoodType &	,
		const FloatOffsetType &	,
		GlobalDataStruct *	= `0`
	)			const `[inline, virtual]`

Propagation speed. This term controls surface expansion/contraction. Default implementation returns zero.

Definition at line 130 of file itkLevelSetFunction.h.

virtual void itk::LightObject::Register ( ) const [virtual, inherited]

Increase the reference count (mark as used by another object).

Reimplemented in itk::Object.

template<class TImageType>

virtual void itk::LevelSetFunction< TImageType >::ReleaseGlobalDataPointer ( void * GlobalData ) const [inline, virtual]

When the finite difference solver filter has finished using a global data pointer, it passes it to this method, which frees the memory. The solver cannot free the memory because it does not know the type to which the pointer points.

Implements itk::FiniteDifferenceFunction< TImageType >.

Reimplemented in itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >, and itk::ShapePriorSegmentationLevelSetFunction< TImageType, TFeatureImageType >.

Definition at line 223 of file itkLevelSetFunction.h.

template<class TImageType>

virtual void itk::LevelSetFunction< TImageType >::SetAdvectionWeight ( const ScalarValueType a ) [inline, virtual]

Alpha. Scales all advection term values.

Definition at line 150 of file itkLevelSetFunction.h.

template<class TImageType>

virtual void itk::LevelSetFunction< TImageType >::SetCurvatureWeight ( const ScalarValueType c ) [inline, virtual]

Gamma. Scales all curvature weight values

Definition at line 164 of file itkLevelSetFunction.h.

template<class TImageType>

void itk::LevelSetFunction< TImageType >::SetEpsilonMagnitude ( const ScalarValueType e ) [inline]

Epsilon.

Definition at line 178 of file itkLevelSetFunction.h.

template<class TImageType>

void itk::LevelSetFunction< TImageType >::SetLaplacianSmoothingWeight ( const ScalarValueType c ) [inline]

Weight of the laplacian smoothing term

Definition at line 171 of file itkLevelSetFunction.h.

template<class TImageType>

static void itk::LevelSetFunction< TImageType >::SetMaximumCurvatureTimeStep ( double n ) [inline, static]

Set/Get the maximum constraint for the curvature term factor in the time step calculation. Changing this value from the default is not recommended or necessary, but can be used to speed up the surface evolution at the risk of creating an unstable solution.

Definition at line 270 of file itkLevelSetFunction.h.

template<class TImageType>

static void itk::LevelSetFunction< TImageType >::SetMaximumPropagationTimeStep ( double n ) [inline, static]

Set/Get the maximum constraint for the scalar/vector term factor of the time step calculation. Changing this value from the default is not recommended or necessary, but can be used to speed up the surface evolution at the risk of creating an unstable solution.

Definition at line 284 of file itkLevelSetFunction.h.

template<class TImageType>

virtual void itk::LevelSetFunction< TImageType >::SetPropagationWeight ( const ScalarValueType p ) [inline, virtual]

Beta. Scales all propagation term values.

Definition at line 157 of file itkLevelSetFunction.h.

void itk::FiniteDifferenceFunction< TImageType >::SetRadius ( const RadiusType & r ) [inline, inherited]

Sets the radius of the neighborhood this FiniteDifferenceFunction needs to perform its calculations.

Definition at line 141 of file itkFiniteDifferenceFunction.h.

virtual void itk::LightObject::SetReferenceCount ( int ) [virtual, inherited]

Sets the reference count on this object. This is a dangerous method, use it with care.

Reimplemented in itk::Object.

void itk::FiniteDifferenceFunction< TImageType >::SetScaleCoefficients ( PixelRealType vals[ImageDimension] ) [inline, inherited]

Set the ScaleCoefficients for the difference operators. The defaults a 1.0. These can be set to take the image spacing into account.

Definition at line 152 of file itkFiniteDifferenceFunction.h.

template<class TImageType>

void itk::LevelSetFunction< TImageType >::SetUseMinimalCurvature ( bool b ) [inline]

Definition at line 248 of file itkLevelSetFunction.h.

virtual void itk::LightObject::UnRegister ( ) const [virtual, inherited]

Decrease the reference count (release by another object).

Reimplemented in itk::Object.

template<class TImageType>

void itk::LevelSetFunction< TImageType >::UseMinimalCurvatureOff ( ) [inline]

Definition at line 260 of file itkLevelSetFunction.h.

template<class TImageType>

void itk::LevelSetFunction< TImageType >::UseMinimalCurvatureOn ( ) [inline]

Definition at line 256 of file itkLevelSetFunction.h.

Member Data Documentation

template<class TImageType>

ScalarValueType itk::LevelSetFunction< TImageType >::m_AdvectionWeight [protected]

Alpha.

Definition at line 332 of file itkLevelSetFunction.h.

template<class TImageType>

:: vcl_size_t itk::LevelSetFunction< TImageType >::m_Center [protected]

The offset of the center pixel in the neighborhood.

Definition at line 314 of file itkLevelSetFunction.h.

template<class TImageType>

ScalarValueType itk::LevelSetFunction< TImageType >::m_CurvatureWeight [protected]

Gamma.

Definition at line 338 of file itkLevelSetFunction.h.

template<class TImageType>

double itk::LevelSetFunction< TImageType >::m_DT [static, protected]

Definition at line 308 of file itkLevelSetFunction.h.

template<class TImageType>

ScalarValueType itk::LevelSetFunction< TImageType >::m_EpsilonMagnitude [protected]

Epsilon magnitude controls the lower limit for gradient magnitude.

Definition at line 329 of file itkLevelSetFunction.h.

template<class TImageType>

ScalarValueType itk::LevelSetFunction< TImageType >::m_LaplacianSmoothingWeight [protected]

Laplacean smoothing term

Definition at line 341 of file itkLevelSetFunction.h.

template<class TImageType>

ScalarValueType itk::LevelSetFunction< TImageType >::m_PropagationWeight [protected]

Beta.

Definition at line 335 of file itkLevelSetFunction.h.

RadiusType itk::FiniteDifferenceFunction< TImageType >::m_Radius [protected, inherited]

Definition at line 203 of file itkFiniteDifferenceFunction.h.

InternalReferenceCountType itk::LightObject::m_ReferenceCount [mutable, protected, inherited]

Number of uses of this object by other objects.

Definition at line 144 of file itkLightObject.h.

SimpleFastMutexLock itk::LightObject::m_ReferenceCountLock [mutable, protected, inherited]

Mutex lock to protect modification to the reference count

Definition at line 147 of file itkLightObject.h.

PixelRealType itk::FiniteDifferenceFunction< TImageType >::m_ScaleCoefficients[ImageDimension] [protected, inherited]

Definition at line 204 of file itkFiniteDifferenceFunction.h.

template<class TImageType>

bool itk::LevelSetFunction< TImageType >::m_UseMinimalCurvature [protected]

Definition at line 319 of file itkLevelSetFunction.h.

template<class TImageType>

double itk::LevelSetFunction< TImageType >::m_WaveDT [static, protected]

Constants used in the time step calculation.

Definition at line 307 of file itkLevelSetFunction.h.

template<class TImageType>

:: vcl_size_t itk::LevelSetFunction< TImageType >::m_xStride[itkGetStaticConstMacro(ImageDimension)] [protected]

Stride length along the y-dimension.

Definition at line 317 of file itkLevelSetFunction.h.

template<class TImageType>

VectorType itk::LevelSetFunction< TImageType >::m_ZeroVectorConstant [static, protected]

Zero vector constant.

Definition at line 326 of file itkLevelSetFunction.h.

template<class TImageType>

std::slice itk::LevelSetFunction< TImageType >::x_slice[itkGetStaticConstMacro(ImageDimension)] [protected]

Slices for the ND neighborhood.

Definition at line 311 of file itkLevelSetFunction.h.

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

itkLevelSetFunction.h


Classes
struct	GlobalDataStruct
Public Types
typedef SmartPointer< const Self >	ConstPointer
typedef ZeroFluxNeumannBoundaryCondition < ImageType >	DefaultBoundaryConditionType
typedef Superclass::FloatOffsetType	FloatOffsetType
typedef Superclass::ImageType	ImageType
typedef Superclass::NeighborhoodScalesType	NeighborhoodScalesType
typedef Superclass::NeighborhoodType	NeighborhoodType
typedef Superclass::PixelRealType	PixelRealType
typedef Superclass::PixelType	PixelType
typedef SmartPointer< Self >	Pointer
typedef Superclass::RadiusType	RadiusType
typedef PixelType	ScalarValueType
typedef LevelSetFunction	Self
typedef FiniteDifferenceFunction < TImageType >	Superclass
typedef double	TimeStepType
typedef FixedArray < ScalarValueType, itkGetStaticConstMacro(ImageDimension)>	VectorType
Public Member Functions
virtual VectorType	AdvectionField (const NeighborhoodType &, const FloatOffsetType &, GlobalDataStruct *=0) const
virtual ScalarValueType	Compute3DMinimalCurvature (const NeighborhoodType &, const FloatOffsetType &, GlobalDataStruct *gd=0)
virtual TimeStepType	ComputeGlobalTimeStep (void *GlobalData) const
virtual ScalarValueType	ComputeMinimalCurvature (const NeighborhoodType &, const FloatOffsetType &, GlobalDataStruct *gd=0)
const NeighborhoodScalesType	ComputeNeighborhoodScales () const
virtual PixelType	ComputeUpdate (const NeighborhoodType &neighborhood, void *globalData, const FloatOffsetType &=FloatOffsetType(0.0))
virtual Pointer	CreateAnother () const
virtual ScalarValueType	CurvatureSpeed (const NeighborhoodType &, const FloatOffsetType &, GlobalDataStruct *=0) const
virtual void	Delete ()
virtual const char *	GetNameOfClass () const
const RadiusType &	GetRadius () const
virtual int	GetReferenceCount () const
virtual void	Initialize (const RadiusType &r)
virtual void	InitializeIteration ()
	itkStaticConstMacro (ImageDimension, unsigned int, ImageType::ImageDimension)
	itkStaticConstMacro (ImageDimension, unsigned int, Superclass::ImageDimension)
virtual ScalarValueType	LaplacianSmoothingSpeed (const NeighborhoodType &, const FloatOffsetType &, GlobalDataStruct *=0) const
void	Print (std::ostream &os, Indent indent=0) const
virtual ScalarValueType	PropagationSpeed (const NeighborhoodType &, const FloatOffsetType &, GlobalDataStruct *=0) const
virtual void	Register () const
virtual void	ReleaseGlobalDataPointer (void *GlobalData) const
void	SetRadius (const RadiusType &r)
virtual void	SetReferenceCount (int)
virtual void	UnRegister () const

virtual ScalarValueType	ComputeCurvatureTerm (const NeighborhoodType &, const FloatOffsetType &, GlobalDataStruct *gd=0)
virtual ScalarValueType	ComputeMeanCurvature (const NeighborhoodType &, const FloatOffsetType &, GlobalDataStruct *gd=0)

ScalarValueType	GetAdvectionWeight () const
virtual void	SetAdvectionWeight (const ScalarValueType a)

ScalarValueType	GetCurvatureWeight () const
virtual void	SetCurvatureWeight (const ScalarValueType c)

ScalarValueType	GetEpsilonMagnitude () const
void	SetEpsilonMagnitude (const ScalarValueType e)

virtual void *	GetGlobalDataPointer () const

ScalarValueType	GetLaplacianSmoothingWeight () const
void	SetLaplacianSmoothingWeight (const ScalarValueType c)

ScalarValueType	GetPropagationWeight () const
virtual void	SetPropagationWeight (const ScalarValueType p)

bool	GetUseMinimalCurvature () const
void	SetUseMinimalCurvature (bool b)
void	UseMinimalCurvatureOff ()
void	UseMinimalCurvatureOn ()

void	SetScaleCoefficients (PixelRealType vals[ImageDimension])
Static Public Member Functions
static void	BreakOnError ()
static Pointer	New ()

static double	GetMaximumCurvatureTimeStep ()
static void	SetMaximumCurvatureTimeStep (double n)

static double	GetMaximumPropagationTimeStep ()
static void	SetMaximumPropagationTimeStep (double n)
Protected Types

typedef int	InternalReferenceCountType
Protected Member Functions
	LevelSetFunction ()
void	PrintSelf (std::ostream &s, Indent indent) const
virtual	~LevelSetFunction ()

virtual void	PrintHeader (std::ostream &os, Indent indent) const
virtual void	PrintTrailer (std::ostream &os, Indent indent) const
Static Protected Member Functions
static VectorType	InitializeZeroVectorConstant ()
Protected Attributes
ScalarValueType	m_AdvectionWeight
::vcl_size_t	m_Center
ScalarValueType	m_CurvatureWeight
ScalarValueType	m_EpsilonMagnitude
ScalarValueType	m_LaplacianSmoothingWeight
ScalarValueType	m_PropagationWeight
RadiusType	m_Radius
InternalReferenceCountType	m_ReferenceCount
SimpleFastMutexLock	m_ReferenceCountLock
PixelRealType	m_ScaleCoefficients [ImageDimension]
bool	m_UseMinimalCurvature
::vcl_size_t	m_xStride [itkGetStaticConstMacro(ImageDimension)]
std::slice	x_slice [itkGetStaticConstMacro(ImageDimension)]
Static Protected Attributes
static double	m_DT
static double	m_WaveDT
static VectorType	m_ZeroVectorConstant

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

Classes

Public Types

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

template<class TImageType> class itk::LevelSetFunction< TImageType >

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

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

template<class TImageType>
class itk::LevelSetFunction< TImageType >