ITK  4.2.0
Insight Segmentation and Registration Toolkit
Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Private Attributes
itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType > Class Template Reference

#include <itkGeodesicActiveContourLevelSetImageFilter.h>

+ Inheritance diagram for itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >:
+ Collaboration diagram for itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >:

List of all members.

Public Types

typedef SmartPointer< const SelfConstPointer
typedef
Superclass::FeatureImageType 
FeatureImageType
typedef
GeodesicActiveContourFunctionType::Pointer 
GeodesicActiveContourFunctionPointer
typedef
GeodesicActiveContourLevelSetFunction
< OutputImageType,
FeatureImageType
GeodesicActiveContourFunctionType
typedef Superclass::OutputImageType OutputImageType
typedef SmartPointer< SelfPointer
typedef
GeodesicActiveContourLevelSetImageFilter 
Self
typedef
SegmentationLevelSetImageFilter
< TInputImage, TFeatureImage,
TOutputPixelType > 
Superclass
typedef Superclass::ValueType ValueType
- Public Types inherited from itk::SegmentationLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >
typedef Superclass::IndexType IndexType
typedef Superclass::InputImageType InputImageType
typedef
SegmentationLevelSetFunction
< OutputImageType,
FeatureImageType
SegmentationFunctionType
typedef
SegmentationFunctionType::ImageType 
SpeedImageType
typedef Superclass::TimeStepType TimeStepType
typedef
SegmentationFunctionType::VectorImageType 
VectorImageType
- Public Types inherited from itk::SparseFieldLevelSetImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
typedef std::vector
< LayerPointerType
LayerListType
typedef ObjectStore
< LayerNodeType
LayerNodeStorageType
typedef
SparseFieldLevelSetNode
< IndexType
LayerNodeType
typedef LayerType::Pointer LayerPointerType
typedef SparseFieldLayer
< LayerNodeType
LayerType
typedef
Superclass::NeighborhoodScalesType 
NeighborhoodScalesType
typedef Superclass::RadiusType RadiusType
typedef Image< StatusType,
itkGetStaticConstMacro(ImageDimension) > 
StatusImageType
typedef signed char StatusType
typedef std::vector< ValueTypeUpdateBufferType
- Public Types inherited from itk::FiniteDifferenceImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
typedef
FiniteDifferenceFunction
< Image< TOutputPixelType,::itk::GetImageDimension
< TInputImage >
::ImageDimension > > 
FiniteDifferenceFunctionType
typedef TInputImage::PixelType InputPixelType
typedef NumericTraits
< InputPixelType >::ValueType 
InputPixelValueType
typedef Image
< TOutputPixelType,::itk::GetImageDimension
< TInputImage >
::ImageDimension >::PixelType 
OutputPixelType
typedef NumericTraits
< OutputPixelType >::ValueType 
OutputPixelValueType
typedef OutputPixelType PixelType
- Public Types inherited from itk::InPlaceImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
typedef
InputImageType::ConstPointer 
InputImageConstPointer
typedef InputImageType::PixelType InputImagePixelType
typedef InputImageType::Pointer InputImagePointer
typedef InputImageType::RegionType InputImageRegionType
typedef
Superclass::OutputImagePixelType 
OutputImagePixelType
typedef
Superclass::OutputImagePointer 
OutputImagePointer
typedef
Superclass::OutputImageRegionType 
OutputImageRegionType
- Public Types inherited from itk::ImageToImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
- Public Types inherited from itk::ImageSource< Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
typedef
Superclass::DataObjectIdentifierType 
DataObjectIdentifierType
typedef DataObject::Pointer DataObjectPointer
typedef
Superclass::DataObjectPointerArraySizeType 
DataObjectPointerArraySizeType
- Public Types inherited from itk::ProcessObject
typedef std::vector
< DataObjectPointer
DataObjectPointerArray
typedef std::vector
< DataObjectIdentifierType
NameArray
- Public Types inherited from itk::Object
- Public Types inherited from itk::LightObject

Public Member Functions

virtual ::itk::LightObject::Pointer CreateAnother (void) const
virtual const char * GetNameOfClass () const
void SetDerivativeSigma (float value)
- Public Member Functions inherited from itk::SegmentationLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >
void GenerateAdvectionImage ()
void GenerateSpeedImage ()
virtual const VectorImageTypeGetAdvectionImage () const
ValueType GetAdvectionScaling () const
ValueType GetCurvatureScaling () const
virtual FeatureImageTypeGetFeatureImage ()
double GetMaximumCurvatureTimeStep () const
unsigned int GetMaximumIterations ()
double GetMaximumPropagationTimeStep () const
ValueType GetPropagationScaling () const
virtual SegmentationFunctionTypeGetSegmentationFunction ()
virtual const SpeedImageTypeGetSpeedImage () const
bool GetUseMinimalCurvature () const
bool GetUseNegativeFeatures () const
void SetAdvectionImage (VectorImageType *v)
virtual void SetInitialImage (InputImageType *f)
void SetInput2 (const FeatureImageType *input)
virtual void SetSegmentationFunction (SegmentationFunctionType *s)
void SetSpeedImage (SpeedImageType *s)
void SetUseNegativeFeaturesOff ()
 typedef (Concept::HasNumericTraits< TOutputPixelType >) OutputHasNumericTraitsCheck
void UseMinimalCurvatureOff ()
void UseMinimalCurvatureOn ()
void SetMaximumIterations (unsigned int i)
virtual void SetFeatureImage (const FeatureImageType *f)
void SetUseNegativeFeaturesOn ()
void SetUseNegativeFeatures (bool u)
virtual void SetReverseExpansionDirection (bool _arg)
virtual bool GetReverseExpansionDirection () const
virtual void ReverseExpansionDirectionOn ()
virtual void ReverseExpansionDirectionOff ()
virtual void SetAutoGenerateSpeedAdvection (bool _arg)
virtual bool GetAutoGenerateSpeedAdvection () const
virtual void AutoGenerateSpeedAdvectionOn ()
virtual void AutoGenerateSpeedAdvectionOff ()
void SetFeatureScaling (ValueType v)
void SetPropagationScaling (ValueType v)
void SetAdvectionScaling (ValueType v)
void SetCurvatureScaling (ValueType v)
void SetUseMinimalCurvature (bool b)
void SetMaximumCurvatureTimeStep (double n)
void SetMaximumPropagationTimeStep (double n)
- Public Member Functions inherited from itk::SparseFieldLevelSetImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
 typedef (Concept::EqualityComparable< typename Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension >::PixelType >) OutputEqualityComparableCheck
 typedef (Concept::Convertible< double, typename Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension >::PixelType >) DoubleConvertibleToOutputCheck
 typedef (Concept::OStreamWritable< typename Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension >::PixelType >) OutputOStreamWritableCheck
virtual void SetNumberOfLayers (unsigned int _arg)
virtual unsigned int GetNumberOfLayers () const
virtual void SetIsoSurfaceValue (ValueType _arg)
virtual ValueType GetIsoSurfaceValue () const
virtual void SetInterpolateSurfaceLocation (bool _arg)
virtual bool GetInterpolateSurfaceLocation () const
void InterpolateSurfaceLocationOn ()
void InterpolateSurfaceLocationOff ()
- Public Member Functions inherited from itk::FiniteDifferenceImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
virtual const
FiniteDifferenceFunctionType::Pointer
GetDifferenceFunction () const
virtual const IdentifierTypeGetElapsedIterations ()
virtual bool GetIsInitialized ()
virtual void SetDifferenceFunction (FiniteDifferenceFunctionType *_arg)
virtual void SetIsInitialized (bool _arg)
void SetStateToInitialized ()
void SetStateToUninitialized ()
virtual void SetNumberOfIterations (IdentifierType _arg)
virtual const IdentifierTypeGetNumberOfIterations ()
virtual void SetUseImageSpacing (bool _arg)
virtual void UseImageSpacingOn ()
virtual void UseImageSpacingOff ()
virtual const bool & GetUseImageSpacing ()
virtual void SetMaximumRMSError (double _arg)
virtual const double & GetMaximumRMSError ()
virtual void SetRMSChange (double _arg)
virtual const double & GetRMSChange ()
virtual void SetManualReinitialization (bool _arg)
virtual const bool & GetManualReinitialization ()
virtual void ManualReinitializationOn ()
virtual void ManualReinitializationOff ()
- Public Member Functions inherited from itk::InPlaceImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
virtual bool CanRunInPlace () const
virtual void SetInPlace (bool _arg)
virtual bool GetInPlace () const
virtual void InPlaceOn ()
virtual void InPlaceOff ()
- Public Member Functions inherited from itk::ImageToImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
const InputImageTypeGetInput (void) const
const InputImageTypeGetInput (unsigned int idx) const
virtual void PopBackInput ()
virtual void PopFrontInput ()
virtual void PushBackInput (const InputImageType *image)
virtual void PushFrontInput (const InputImageType *image)
virtual void SetInput (const InputImageType *image)
virtual void SetInput (unsigned int, const TInputImage *image)
- Public Member Functions inherited from itk::ImageSource< Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
OutputImageTypeGetOutput (unsigned int idx)
virtual void GraftNthOutput (unsigned int idx, DataObject *output)
virtual void GraftOutput (DataObject *output)
virtual void GraftOutput (const DataObjectIdentifierType &key, DataObject *output)
OutputImageTypeGetOutput (void)
const OutputImageTypeGetOutput (void) const
virtual
ProcessObject::DataObjectPointer 
MakeOutput (ProcessObject::DataObjectPointerArraySizeType idx)
- Public Member Functions inherited from itk::ProcessObject
virtual void AbortGenerateDataOff ()
virtual void AbortGenerateDataOn ()
virtual void EnlargeOutputRequestedRegion (DataObject *)
virtual const bool & GetAbortGenerateData ()
NameArray GetInputNames () const
MultiThreader * GetMultiThreader () const
DataObjectPointerArraySizeType GetNumberOfIndexedInputs () const
DataObjectPointerArraySizeType GetNumberOfInputs () const
DataObjectPointerArraySizeType GetNumberOfOutputs () const
virtual
DataObjectPointerArraySizeType 
GetNumberOfValidRequiredInputs () const
NameArray GetOutputNames () const
virtual const float & GetProgress ()
NameArray GetRequiredInputNames () const
bool HasInput (const DataObjectIdentifierType &key) const
bool HasOutput (const DataObjectIdentifierType &key) const
virtual DataObjectPointer MakeOutput (const DataObjectIdentifierType &)
virtual void PrepareOutputs ()
virtual void PropagateRequestedRegion (DataObject *output)
virtual void ResetPipeline ()
virtual void SetAbortGenerateData (bool _arg)
virtual void SetProgress (float _arg)
virtual void Update ()
virtual void UpdateLargestPossibleRegion ()
virtual void UpdateOutputData (DataObject *output)
virtual void UpdateOutputInformation ()
void UpdateProgress (float amount)
DataObjectPointerArray GetInputs ()
DataObjectPointerArray GetOutputs ()
DataObjectPointerArray GetIndexedInputs ()
DataObjectPointerArray GetIndexedOutputs ()
DataObjectPointerArraySizeType GetNumberOfIndexedOutputs () const
virtual void SetReleaseDataFlag (bool flag)
virtual bool GetReleaseDataFlag () const
void ReleaseDataFlagOn ()
void ReleaseDataFlagOff ()
virtual void SetReleaseDataBeforeUpdateFlag (bool _arg)
virtual const bool & GetReleaseDataBeforeUpdateFlag ()
virtual void ReleaseDataBeforeUpdateFlagOn ()
virtual void ReleaseDataBeforeUpdateFlagOff ()
virtual void SetNumberOfThreads (ThreadIdType _arg)
virtual const ThreadIdTypeGetNumberOfThreads ()
- Public Member Functions inherited from itk::Object
unsigned long AddObserver (const EventObject &event, Command *)
unsigned long AddObserver (const EventObject &event, Command *) const
virtual void DebugOff () const
virtual void DebugOn () const
CommandGetCommand (unsigned long tag)
bool GetDebug () const
MetaDataDictionaryGetMetaDataDictionary (void)
const MetaDataDictionaryGetMetaDataDictionary (void) const
virtual unsigned long GetMTime () const
virtual const TimeStampGetTimeStamp () const
bool HasObserver (const EventObject &event) const
void InvokeEvent (const EventObject &)
void InvokeEvent (const EventObject &) const
virtual void Modified () const
virtual void Register () const
void RemoveAllObservers ()
void RemoveObserver (unsigned long tag)
void SetDebug (bool debugFlag) const
void SetMetaDataDictionary (const MetaDataDictionary &rhs)
virtual void SetReferenceCount (int)
virtual void UnRegister () const
- Public Member Functions inherited from itk::LightObject
virtual void Delete ()
virtual int GetReferenceCount () const
 itkCloneMacro (Self)
void Print (std::ostream &os, Indent indent=0) const

Static Public Member Functions

static Pointer New ()

Protected Member Functions

void GenerateData ()
 GeodesicActiveContourLevelSetImageFilter (const Self &)
void operator= (const Self &)
virtual void PrintSelf (std::ostream &os, Indent indent) const
- Protected Member Functions inherited from itk::SegmentationLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >
 SegmentationLevelSetImageFilter ()
virtual ~SegmentationLevelSetImageFilter ()
virtual void InitializeIteration ()
- Protected Member Functions inherited from itk::SparseFieldLevelSetImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
void AllocateUpdateBuffer ()
void ApplyUpdate (const TimeStepType &dt)
TimeStepType CalculateChange ()
virtual ValueType CalculateUpdateValue (const IndexType &, const TimeStepType &dt, const ValueType &value, const ValueType &change)
void ConstructActiveLayer ()
void ConstructLayer (StatusType from, StatusType to)
void CopyInputToOutput ()
virtual ValueType GetValueOne () const
virtual ValueType GetValueZero () const
void Initialize ()
void InitializeActiveLayerValues ()
virtual void InitializeBackgroundPixels ()
virtual void PostProcessOutput ()
void ProcessOutsideList (LayerType *OutsideList, StatusType ChangeToStatus)
void ProcessStatusList (LayerType *InputList, LayerType *OutputList, StatusType ChangeToStatus, StatusType SearchForStatus)
void PropagateAllLayerValues ()
void PropagateLayerValues (StatusType from, StatusType to, StatusType promote, int InOrOut)
void UpdateActiveLayerValues (TimeStepType dt, LayerType *StatusUpList, LayerType *StatusDownList)
 SparseFieldLevelSetImageFilter ()
 ~SparseFieldLevelSetImageFilter ()
- Protected Member Functions inherited from itk::FiniteDifferenceImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
 FiniteDifferenceImageFilter ()
virtual void GenerateInputRequestedRegion ()
virtual bool Halt ()
virtual TimeStepType ResolveTimeStep (const std::vector< TimeStepType > &timeStepList, const std::vector< bool > &valid) const
virtual void SetElapsedIterations (IdentifierType _arg)
virtual bool ThreadedHalt (void *)
virtual ~FiniteDifferenceImageFilter ()
- Protected Member Functions inherited from itk::InPlaceImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
virtual void AllocateOutputs ()
virtual bool GetRunningInPlace () const
 InPlaceImageFilter ()
virtual void ReleaseInputs ()
 ~InPlaceImageFilter ()
- Protected Member Functions inherited from itk::ImageToImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
virtual void CallCopyInputRegionToOutputRegion (OutputImageRegionType &destRegion, const InputImageRegionType &srcRegion)
virtual void CallCopyOutputRegionToInputRegion (InputImageRegionType &destRegion, const OutputImageRegionType &srcRegion)
 ImageToImageFilter ()
virtual void VerifyInputInformation ()
 ~ImageToImageFilter ()
void PushBackInput (const DataObject *input)
void PushFrontInput (const DataObject *input)
- Protected Member Functions inherited from itk::ImageSource< Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
virtual void AfterThreadedGenerateData ()
virtual void BeforeThreadedGenerateData ()
 ImageSource ()
virtual unsigned int SplitRequestedRegion (unsigned int i, unsigned int num, OutputImageRegionType &splitRegion)
virtual void ThreadedGenerateData (const OutputImageRegionType &outputRegionForThread, ThreadIdType threadId)
virtual ~ImageSource ()
- Protected Member Functions inherited from itk::ProcessObject
virtual void AddInput (DataObject *input)
virtual void AddOutput (DataObject *output)
bool AddRequiredInputName (const DataObjectIdentifierType &)
virtual void CacheInputReleaseDataFlags ()
virtual void GenerateOutputInformation ()
virtual void GenerateOutputRequestedRegion (DataObject *output)
virtual const
DataObjectPointerArraySizeType
GetNumberOfRequiredInputs ()
virtual const
DataObjectPointerArraySizeType
GetNumberOfRequiredOutputs ()
bool IsIndexedName (const DataObjectIdentifierType &) const
bool IsRequiredInputName (const DataObjectIdentifierType &) const
 itkLegacyMacro (virtual void RemoveInput(DataObject *input))
 itkLegacyMacro (virtual void RemoveOutput(DataObject *output))
 itkLegacyMacro (void SetNumberOfInputs(DataObjectPointerArraySizeType num))
 itkLegacyMacro (void SetNumberOfOutputs(DataObjectPointerArraySizeType num))
DataObjectPointerArraySizeType MakeIndexFromName (const DataObjectIdentifierType &) const
DataObjectIdentifierType MakeNameFromIndex (DataObjectPointerArraySizeType) const
 ProcessObject ()
virtual void PropagateResetPipeline ()
virtual void RemoveInput (const DataObjectIdentifierType &key)
virtual void RemoveInput (DataObjectPointerArraySizeType)
virtual void RemoveOutput (const DataObjectIdentifierType &key)
virtual void RemoveOutput (DataObjectPointerArraySizeType idx)
bool RemoveRequiredInputName (const DataObjectIdentifierType &)
virtual void RestoreInputReleaseDataFlags ()
virtual void SetInput (const DataObjectIdentifierType &key, DataObject *input)
virtual void SetNthInput (DataObjectPointerArraySizeType num, DataObject *input)
virtual void SetNthOutput (DataObjectPointerArraySizeType num, DataObject *output)
void SetNumberOfIndexedInputs (DataObjectPointerArraySizeType num)
void SetNumberOfIndexedOutputs (DataObjectPointerArraySizeType num)
virtual void SetNumberOfRequiredInputs (DataObjectPointerArraySizeType)
virtual void SetNumberOfRequiredOutputs (DataObjectPointerArraySizeType _arg)
virtual void SetOutput (const DataObjectIdentifierType &key, DataObject *output)
virtual void SetPrimaryInput (DataObject *input)
virtual void SetPrimaryOutput (DataObject *output)
void SetRequiredInputNames (const NameArray &)
virtual void VerifyPreconditions ()
 ~ProcessObject ()
DataObjectGetInput (const DataObjectIdentifierType &key)
const DataObjectGetInput (const DataObjectIdentifierType &key) const
DataObjectGetInput (DataObjectPointerArraySizeType)
const DataObjectGetInput (DataObjectPointerArraySizeType idx) const
DataObjectGetPrimaryInput ()
const DataObjectGetPrimaryInput () const
DataObjectGetOutput (const DataObjectIdentifierType &key)
const DataObjectGetOutput (const DataObjectIdentifierType &key) const
DataObjectGetOutput (DataObjectPointerArraySizeType idx)
const DataObjectGetOutput (DataObjectPointerArraySizeType idx) const
DataObjectGetPrimaryOutput ()
const DataObjectGetPrimaryOutput () const
- Protected Member Functions inherited from itk::Object
 Object ()
bool PrintObservers (std::ostream &os, Indent indent) const
virtual void SetTimeStamp (const TimeStamp &time)
virtual ~Object ()
- Protected Member Functions inherited from itk::LightObject
virtual LightObject::Pointer InternalClone () const
 LightObject ()
virtual void PrintHeader (std::ostream &os, Indent indent) const
virtual void PrintTrailer (std::ostream &os, Indent indent) const
virtual ~LightObject ()

Private Attributes

GeodesicActiveContourFunctionPointer m_GeodesicActiveContourFunction
float GetDerivativeSigma () const
 ~GeodesicActiveContourLevelSetImageFilter ()
 GeodesicActiveContourLevelSetImageFilter ()

Additional Inherited Members

- Protected Attributes inherited from itk::SegmentationLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >
bool m_ReverseExpansionDirection
bool m_AutoGenerateSpeedAdvection
- Protected Attributes inherited from itk::SparseFieldLevelSetImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
double m_ConstantGradientValue
ValueType m_IsoSurfaceValue
LayerNodeStorageType::Pointer m_LayerNodeStore
LayerListType m_Layers
SparseFieldCityBlockNeighborList
< NeighborhoodIterator
< OutputImageType > > 
m_NeighborList
unsigned int m_NumberOfLayers
OutputImageType::Pointer m_ShiftedImage
StatusImageType::Pointer m_StatusImage
UpdateBufferType m_UpdateBuffer
bool m_InterpolateSurfaceLocation
- Protected Attributes inherited from itk::FiniteDifferenceImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >
IdentifierType m_ElapsedIterations
bool m_IsInitialized
bool m_ManualReinitialization
double m_MaximumRMSError
IdentifierType m_NumberOfIterations
double m_RMSChange

Detailed Description

template<class TInputImage, class TFeatureImage, class TOutputPixelType = float>
class itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >

Segments structures in images based on a user supplied edge potential map.

IMPORTANT
The SegmentationLevelSetImageFilter class and the GeodesicActiveContourLevelSetFunction class contain additional information necessary to gain full understanding of how to use this filter.
OVERVIEW
This class is a level set method segmentation filter. An initial contour is propagated outwards (or inwards) until it ''sticks'' to the shape boundaries. This is done by using a level set speed function based on a user supplied edge potential map.
INPUTS
This filter requires two inputs. The first input is a initial level set. The initial level set is a real image which contains the initial contour/surface as the zero level set. For example, a signed distance function from the initial contour/surface is typically used. Unlike the simpler ShapeDetectionLevelSetImageFilter the initial contour does not have to lie wholly within the shape to be segmented. The initial contour is allow to overlap the shape boundary. The extra advection term in the update equation behaves like a doublet and attracts the contour to the boundary. This approach for segmentation follows that of Caselles et al (1997).
The second input is the feature image. For this filter, this is the edge potential map. General characteristics of an edge potential map is that it has values close to zero in regions near the edges and values close to one inside the shape itself. Typically, the edge potential map is compute from the image gradient, for example:

\[ g(I) = 1 / ( 1 + | (\nabla * G)(I)| ) \]

\[ g(I) = \exp^{-|(\nabla * G)(I)|} \]

where $ I $ is image intensity and $ (\nabla * G) $ is the derivative of Gaussian operator.

See SegmentationLevelSetImageFilter and SparseFieldLevelSetImageFilter for more information on Inputs.
PARAMETERS
The PropagationScaling parameter can be used to switch from propagation outwards (POSITIVE scaling parameter) versus propagating inwards (NEGATIVE scaling parameter).

This implementation allows the user to set the weights between the propagation, advection and curvature term using methods SetPropagationScaling(), SetAdvectionScaling(), SetCurvatureScaling(). In general, the larger the CurvatureScaling, the smoother the resulting contour. To follow the implementation in Caselles et al paper, set the PropagationScaling to $ c $ (the inflation or ballon force) and AdvectionScaling and CurvatureScaling both to 1.0.

OUTPUTS
The filter outputs a single, scalar, real-valued image. Negative values in the output image represent the inside of the segmented region and positive values in the image represent the outside of the segmented region. The zero crossings of the image correspond to the position of the propagating front.
See SparseFieldLevelSetImageFilter and SegmentationLevelSetImageFilter for more information.
REFERENCES
"Geodesic Active Contours", V. Caselles, R. Kimmel and G. Sapiro. International Journal on Computer Vision, Vol 22, No. 1, pp 61-97, 1997
See also:
SegmentationLevelSetImageFilter
GeodesicActiveContourLevelSetFunction
SparseFieldLevelSetImageFilter

Definition at line 107 of file itkGeodesicActiveContourLevelSetImageFilter.h.


Member Typedef Documentation

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
typedef SmartPointer< const Self > itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::ConstPointer
template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
typedef Superclass::FeatureImageType itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::FeatureImageType
template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
typedef GeodesicActiveContourFunctionType::Pointer itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::GeodesicActiveContourFunctionPointer
template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
typedef GeodesicActiveContourLevelSetFunction< OutputImageType, FeatureImageType > itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::GeodesicActiveContourFunctionType

Type of the segmentation function

Definition at line 127 of file itkGeodesicActiveContourLevelSetImageFilter.h.

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
typedef Superclass::OutputImageType itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::OutputImageType
template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
typedef SmartPointer< Self > itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::Pointer
template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
typedef GeodesicActiveContourLevelSetImageFilter itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::Self
template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
typedef SegmentationLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType > itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::Superclass
template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
typedef Superclass::ValueType itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::ValueType

Inherited typedef from the superclass.

Reimplemented from itk::SegmentationLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >.

Definition at line 121 of file itkGeodesicActiveContourLevelSetImageFilter.h.


Constructor & Destructor Documentation

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::~GeodesicActiveContourLevelSetImageFilter ( )
inlineprotected

Get the value of sigma used to compute the edge potential map derivatives.

Definition at line 153 of file itkGeodesicActiveContourLevelSetImageFilter.h.

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::GeodesicActiveContourLevelSetImageFilter ( )
protected

Get the value of sigma used to compute the edge potential map derivatives.

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::GeodesicActiveContourLevelSetImageFilter ( const Self )
protected

Member Function Documentation

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
virtual::itk::LightObject::Pointer itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::CreateAnother ( void  ) const
virtual

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 from itk::SparseFieldLevelSetImageFilter< TInputImage, Image< TOutputPixelType,::itk::GetImageDimension< TInputImage >::ImageDimension > >.

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
void itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::GenerateData ( )
protectedvirtual

Overridden from Superclass to handle the case when PropagationScaling is zero.

Reimplemented from itk::SegmentationLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >.

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
float itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::GetDerivativeSigma ( ) const
inline

Get the value of sigma used to compute the edge potential map derivatives.

Definition at line 150 of file itkGeodesicActiveContourLevelSetImageFilter.h.

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
virtual const char* itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::GetNameOfClass ( ) const
virtual

Run-time type information (and related methods).

Reimplemented from itk::SegmentationLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >.

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
static Pointer itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::New ( )
static
template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
void itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::operator= ( const Self )
protected

Flag to indicate whether Speed and Advection images are automatically generated when running the filter. Otherwise, a pointer to images must be explicitly set or GenerateSpeedImage() and/or GenerateAdvectionImage() called directly before updating the filter

Reimplemented from itk::SegmentationLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >.

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
virtual void itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::PrintSelf ( std::ostream &  os,
Indent  indent 
) const
protectedvirtual
template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
void itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::SetDerivativeSigma ( float  value)
inline

Set the value of sigma used to compute the edge potential map derivatives

Definition at line 138 of file itkGeodesicActiveContourLevelSetImageFilter.h.


Member Data Documentation

template<class TInputImage , class TFeatureImage , class TOutputPixelType = float>
GeodesicActiveContourFunctionPointer itk::GeodesicActiveContourLevelSetImageFilter< TInputImage, TFeatureImage, TOutputPixelType >::m_GeodesicActiveContourFunction
private

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