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

#include <sitkShapeDetectionLevelSetImageFilter.h>

Inheritance diagram for itk::simple::ShapeDetectionLevelSetImageFilter:

Collaboration diagram for itk::simple::ShapeDetectionLevelSetImageFilter:

Detailed Description

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

IMPORTANT: The SegmentationLevelSetImageFilter class and the ShapeDetectionLevelSetFunction 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. This approach for segmentation follows that of Malladi et al (1995).

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. Note that for this algorithm the initial contour has to be wholly within (or wholly outside) the structure to be segmented.

: 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).

The smoothness of the resulting contour/surface can be adjusted using a combination of PropagationScaling and CurvatureScaling parameters. The larger the CurvatureScaling parameter, the smoother the resulting contour. The CurvatureScaling parameter should be non-negative for proper operation of this algorithm. To follow the implementation in Malladi et al paper, set the PropagationScaling to \(\pm 1.0\) and CurvatureScaling to \( \epsilon \) .

Note that there is no advection term for this filter. Setting the advection scaling will have no effect.

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

: "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: SegmentationLevelSetImageFilter; ShapeDetectionLevelSetFunction; SparseFieldLevelSetImageFilter; itk::simple::ShapeDetectionLevelSet for the procedural interface; itk::ShapeDetectionLevelSetImageFilter for the Doxygen on the original ITK class.

Definition at line 95 of file sitkShapeDetectionLevelSetImageFilter.h.

Public Types
using	PixelIDTypeList = RealPixelIDTypeList

using	Self = ShapeDetectionLevelSetImageFilter

Public Types inherited from itk::simple::ImageFilter
using	Self = ImageFilter

Public Types inherited from itk::simple::ProcessObject
using	Self = ProcessObject

Public Member Functions
Image	Execute (const Image &initialImage, const Image &featureImage)

Image	Execute (Image &&initialImage, const Image &featureImage)

double	GetCurvatureScaling () const

uint32_t	GetElapsedIterations () const
	Number of iterations run. More...

double	GetMaximumRMSError () const

std::string	GetName () const

uint32_t	GetNumberOfIterations () const

double	GetPropagationScaling () const

bool	GetReverseExpansionDirection () const

double	GetRMSChange () const
	The Root Mean Square of the levelset upon termination. More...

Self &	ReverseExpansionDirectionOff ()

Self &	ReverseExpansionDirectionOn ()

Self &	SetCurvatureScaling (double CurvatureScaling)

Self &	SetMaximumRMSError (double MaximumRMSError)

Self &	SetNumberOfIterations (uint32_t NumberOfIterations)

Self &	SetPropagationScaling (double PropagationScaling)

Self &	SetReverseExpansionDirection (bool ReverseExpansionDirection)

	ShapeDetectionLevelSetImageFilter ()

std::string	ToString () const

virtual	~ShapeDetectionLevelSetImageFilter ()

Public Member Functions inherited from itk::simple::ImageFilter
	ImageFilter ()

virtual	~ImageFilter ()=0

Public Member Functions inherited from itk::simple::ProcessObject
virtual void	Abort ()

virtual int	AddCommand (itk::simple::EventEnum event, const std::function< void()> &func)
	Directly add a callback to observe an event. More...

virtual int	AddCommand (itk::simple::EventEnum event, itk::simple::Command &cmd)
	Add a Command Object to observer the event. More...

virtual float	GetProgress () const
	An Active Measurement of the progress of execution. More...

virtual bool	HasCommand (itk::simple::EventEnum event) const
	Query of this object has any registered commands for event. More...

	ProcessObject ()

virtual void	RemoveAllCommands ()
	Remove all registered commands. More...

virtual	~ProcessObject ()

virtual void	DebugOn ()

virtual void	DebugOff ()

virtual bool	GetDebug () const

virtual void	SetDebug (bool debugFlag)

virtual void	SetNumberOfThreads (unsigned int n)

virtual unsigned int	GetNumberOfThreads () const

virtual void	SetNumberOfWorkUnits (unsigned int n)

virtual unsigned int	GetNumberOfWorkUnits () const

Private Types
using	MemberFunctionType = Image(Self::)(const Image initialImage, const Image *featureImage)

Private Member Functions
template<class TImageType >
Image	ExecuteInternal (const Image initialImage, const Image featureImage)

Private Attributes
double	m_CurvatureScaling {1.0}

uint32_t	m_ElapsedIterations {0}

bool	m_InPlace {false}

double	m_MaximumRMSError {0.02}

std::unique_ptr< detail::MemberFunctionFactory< MemberFunctionType > >	m_MemberFactory

uint32_t	m_NumberOfIterations {1000u}

double	m_PropagationScaling {1.0}

bool	m_ReverseExpansionDirection {false}

double	m_RMSChange {0.0}

Friends
struct	detail::MemberFunctionAddressor< MemberFunctionType >

Additional Inherited Members
Static Public Member Functions inherited from itk::simple::ProcessObject
static bool	GetGlobalDefaultDebug ()

static void	GlobalDefaultDebugOff ()

static void	GlobalDefaultDebugOn ()

static void	SetGlobalDefaultDebug (bool debugFlag)

static void	GlobalWarningDisplayOn ()

static void	GlobalWarningDisplayOff ()

static void	SetGlobalWarningDisplay (bool flag)

static bool	GetGlobalWarningDisplay ()

static double	GetGlobalDefaultCoordinateTolerance ()
	Access the global tolerance to determine congruent spaces. More...

static void	SetGlobalDefaultCoordinateTolerance (double)
	Access the global tolerance to determine congruent spaces. More...

static double	GetGlobalDefaultDirectionTolerance ()
	Access the global tolerance to determine congruent spaces. More...

static void	SetGlobalDefaultDirectionTolerance (double)
	Access the global tolerance to determine congruent spaces. More...

static bool	SetGlobalDefaultThreader (const std::string &threader)
	Set/Get the default threader used for process objects. More...

static std::string	GetGlobalDefaultThreader ()
	Set/Get the default threader used for process objects. More...

static void	SetGlobalDefaultNumberOfThreads (unsigned int n)

static unsigned int	GetGlobalDefaultNumberOfThreads ()
	Set/Get the default threader used for process objects. More...

Protected Member Functions inherited from itk::simple::ImageFilter
void	CheckImageMatchingDimension (const Image &image1, const Image &image2, const std::string &image2Name)

void	CheckImageMatchingPixelType (const Image &image1, const Image &image2, const std::string &image2Name)

void	CheckImageMatchingSize (const Image &image1, const Image &image2, const std::string &image2Name)

Protected Member Functions inherited from itk::simple::ProcessObject
virtual unsigned long	AddITKObserver (const itk::EventObject &, itk::Command *)

virtual itk::ProcessObject *	GetActiveProcess ()

virtual void	OnActiveProcessDelete ()

virtual void	onCommandDelete (const itk::simple::Command *cmd) noexcept

virtual void	PreUpdate (itk::ProcessObject *p)

virtual void	RemoveITKObserver (EventCommand &e)

Protected Member Functions inherited from itk::simple::NonCopyable
	NonCopyable ()=default

	NonCopyable (const NonCopyable &)=delete

NonCopyable &	operator= (const NonCopyable &)=delete

Static Protected Member Functions inherited from itk::simple::ImageFilter
template<class TImageType >
static void	FixNonZeroIndex (TImageType *img)

Static Protected Member Functions inherited from itk::simple::ProcessObject
template<class TImageType >
static TImageType::ConstPointer	CastImageToITK (const Image &img)

template<class TPixelType , unsigned int VImageDimension, unsigned int VLength, template< typename, unsigned int > class TVector>
static Image	CastITKToImage (itk::Image< TVector< TPixelType, VLength >, VImageDimension > *img)

template<unsigned int VImageDimension, unsigned int VLength, template< unsigned int > class TVector>
static Image	CastITKToImage (itk::Image< TVector< VLength >, VImageDimension > *img)

template<class TImageType >
static Image	CastITKToImage (TImageType *img)

static const itk::EventObject &	GetITKEventObject (EventEnum e)

template<typename T >
static std::ostream &	ToStringHelper (std::ostream &os, const T &v)

static std::ostream &	ToStringHelper (std::ostream &os, const char &v)

static std::ostream &	ToStringHelper (std::ostream &os, const signed char &v)

static std::ostream &	ToStringHelper (std::ostream &os, const unsigned char &v)

Member Typedef Documentation

◆ MemberFunctionType

using itk::simple::ShapeDetectionLevelSetImageFilter::MemberFunctionType = Image (Self::*)( const Image * initialImage, const Image * featureImage )

private

Setup for member function dispatching

Definition at line 187 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ PixelIDTypeList

using itk::simple::ShapeDetectionLevelSetImageFilter::PixelIDTypeList = RealPixelIDTypeList

Define the pixels types supported by this filter

Definition at line 107 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ Self

using itk::simple::ShapeDetectionLevelSetImageFilter::Self = ShapeDetectionLevelSetImageFilter

Definition at line 97 of file sitkShapeDetectionLevelSetImageFilter.h.

Constructor & Destructor Documentation

◆ ~ShapeDetectionLevelSetImageFilter()

virtual itk::simple::ShapeDetectionLevelSetImageFilter::~ShapeDetectionLevelSetImageFilter ( )

virtual

Destructor

◆ ShapeDetectionLevelSetImageFilter()

itk::simple::ShapeDetectionLevelSetImageFilter::ShapeDetectionLevelSetImageFilter ( )

Default Constructor that takes no arguments and initializes default parameters

Member Function Documentation

◆ Execute() [1/2]

Image itk::simple::ShapeDetectionLevelSetImageFilter::Execute	(	const Image &	initialImage,
		const Image &	featureImage
	)

◆ Execute() [2/2]

Image itk::simple::ShapeDetectionLevelSetImageFilter::Execute	(	Image &&	initialImage,
		const Image &	featureImage
	)

Execute the filter on the input image

◆ ExecuteInternal()

template<class TImageType >

Image itk::simple::ShapeDetectionLevelSetImageFilter::ExecuteInternal	(	const Image *	initialImage,
		const Image *	featureImage
	)

private

◆ GetCurvatureScaling()

double itk::simple::ShapeDetectionLevelSetImageFilter::GetCurvatureScaling ( ) const

inline

Definition at line 132 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ GetElapsedIterations()

uint32_t itk::simple::ShapeDetectionLevelSetImageFilter::GetElapsedIterations ( ) const

inline

Number of iterations run.

This is a measurement. Its value is updated in the Execute methods, so the value will only be valid after an execution.

Definition at line 159 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ GetMaximumRMSError()

double itk::simple::ShapeDetectionLevelSetImageFilter::GetMaximumRMSError ( ) const

inline

Definition at line 116 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ GetName()

std::string itk::simple::ShapeDetectionLevelSetImageFilter::GetName ( ) const

inlinevirtual

Name of this class

Implements itk::simple::ProcessObject.

Definition at line 171 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ GetNumberOfIterations()

uint32_t itk::simple::ShapeDetectionLevelSetImageFilter::GetNumberOfIterations ( ) const

inline

Definition at line 140 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ GetPropagationScaling()

double itk::simple::ShapeDetectionLevelSetImageFilter::GetPropagationScaling ( ) const

inline

Definition at line 124 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ GetReverseExpansionDirection()

bool itk::simple::ShapeDetectionLevelSetImageFilter::GetReverseExpansionDirection ( ) const

inline

Definition at line 152 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ GetRMSChange()

double itk::simple::ShapeDetectionLevelSetImageFilter::GetRMSChange ( ) const

inline

The Root Mean Square of the levelset upon termination.

This is a measurement. Its value is updated in the Execute methods, so the value will only be valid after an execution.

Definition at line 167 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ ReverseExpansionDirectionOff()

Self& itk::simple::ShapeDetectionLevelSetImageFilter::ReverseExpansionDirectionOff ( )

inline

Definition at line 148 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ ReverseExpansionDirectionOn()

Self& itk::simple::ShapeDetectionLevelSetImageFilter::ReverseExpansionDirectionOn ( )

inline

Set the value of ReverseExpansionDirection to true or false respectfully.

Definition at line 147 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ SetCurvatureScaling()

Self& itk::simple::ShapeDetectionLevelSetImageFilter::SetCurvatureScaling ( double CurvatureScaling )

inline

Definition at line 128 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ SetMaximumRMSError()

Self& itk::simple::ShapeDetectionLevelSetImageFilter::SetMaximumRMSError ( double MaximumRMSError )

inline

Definition at line 112 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ SetNumberOfIterations()

Self& itk::simple::ShapeDetectionLevelSetImageFilter::SetNumberOfIterations ( uint32_t NumberOfIterations )

inline

Definition at line 136 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ SetPropagationScaling()

Self& itk::simple::ShapeDetectionLevelSetImageFilter::SetPropagationScaling ( double PropagationScaling )

inline

Definition at line 120 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ SetReverseExpansionDirection()

Self& itk::simple::ShapeDetectionLevelSetImageFilter::SetReverseExpansionDirection ( bool ReverseExpansionDirection )

inline

Definition at line 144 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ ToString()

std::string itk::simple::ShapeDetectionLevelSetImageFilter::ToString ( ) const

virtual

Print ourselves out

Reimplemented from itk::simple::ProcessObject.

Friends And Related Function Documentation

◆ detail::MemberFunctionAddressor< MemberFunctionType >

friend struct detail::MemberFunctionAddressor< MemberFunctionType >

friend

Definition at line 191 of file sitkShapeDetectionLevelSetImageFilter.h.

Member Data Documentation

◆ m_CurvatureScaling

double itk::simple::ShapeDetectionLevelSetImageFilter::m_CurvatureScaling {1.0}

private

Definition at line 203 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ m_ElapsedIterations

uint32_t itk::simple::ShapeDetectionLevelSetImageFilter::m_ElapsedIterations {0}

private

Definition at line 212 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ m_InPlace

bool itk::simple::ShapeDetectionLevelSetImageFilter::m_InPlace {false}

private

Definition at line 217 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ m_MaximumRMSError

double itk::simple::ShapeDetectionLevelSetImageFilter::m_MaximumRMSError {0.02}

private

Definition at line 197 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ m_MemberFactory

std::unique_ptr<detail::MemberFunctionFactory<MemberFunctionType> > itk::simple::ShapeDetectionLevelSetImageFilter::m_MemberFactory

private

Definition at line 193 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ m_NumberOfIterations

uint32_t itk::simple::ShapeDetectionLevelSetImageFilter::m_NumberOfIterations {1000u}

private

Definition at line 206 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ m_PropagationScaling

double itk::simple::ShapeDetectionLevelSetImageFilter::m_PropagationScaling {1.0}

private

Definition at line 200 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ m_ReverseExpansionDirection

bool itk::simple::ShapeDetectionLevelSetImageFilter::m_ReverseExpansionDirection {false}

private

Definition at line 209 of file sitkShapeDetectionLevelSetImageFilter.h.

◆ m_RMSChange

double itk::simple::ShapeDetectionLevelSetImageFilter::m_RMSChange {0.0}

private

Definition at line 214 of file sitkShapeDetectionLevelSetImageFilter.h.

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

sitkShapeDetectionLevelSetImageFilter.h

Detailed Description

Public Types

Public Member Functions

Private Types

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Member Typedef Documentation

◆ MemberFunctionType

◆ PixelIDTypeList

◆ Self

Constructor & Destructor Documentation

◆ ~ShapeDetectionLevelSetImageFilter()

◆ ShapeDetectionLevelSetImageFilter()

Member Function Documentation

◆ Execute() [1/2]

◆ Execute() [2/2]

◆ ExecuteInternal()

◆ GetCurvatureScaling()

◆ GetElapsedIterations()

◆ GetMaximumRMSError()

◆ GetName()

◆ GetNumberOfIterations()

◆ GetPropagationScaling()

◆ GetReverseExpansionDirection()

◆ GetRMSChange()

◆ ReverseExpansionDirectionOff()

◆ ReverseExpansionDirectionOn()

◆ SetCurvatureScaling()

◆ SetMaximumRMSError()

◆ SetNumberOfIterations()

◆ SetPropagationScaling()

◆ SetReverseExpansionDirection()

◆ ToString()

Friends And Related Function Documentation

◆ detail::MemberFunctionAddressor< MemberFunctionType >

Member Data Documentation

◆ m_CurvatureScaling

◆ m_ElapsedIterations

◆ m_InPlace

◆ m_MaximumRMSError

◆ m_MemberFactory

◆ m_NumberOfIterations

◆ m_PropagationScaling

◆ m_ReverseExpansionDirection

◆ m_RMSChange