Public Types | Public Member Functions | Private Types | Private Member Functions | Private Attributes | Friends | List of all members
itk::simple::LaplacianSegmentationLevelSetImageFilter Class Reference

Segments structures in images based on a second derivative image features. More...

#include <sitkLaplacianSegmentationLevelSetImageFilter.h>

+ Inheritance diagram for itk::simple::LaplacianSegmentationLevelSetImageFilter:
+ Collaboration diagram for itk::simple::LaplacianSegmentationLevelSetImageFilter:

Detailed Description

Segments structures in images based on a second derivative image features.

The SegmentationLevelSetImageFilter class and the LaplacianSegmentationLevelSetFunction class contain additional information necessary to the full understanding of how to use this filter.
This class is a level set method segmentation filter. It constructs a speed function which is zero at image edges as detected by a Laplacian filter. The evolving level set front will therefore tend to lock onto zero crossings in the image. The level set front moves fastest near edges.
The Laplacian segmentation filter is intended primarily as a tool for refining existing segmentations. The initial isosurface (as given in the seed input image) should ideally be very close to the segmentation boundary of interest. The idea is that a rough segmentation can be refined by allowing the isosurface to deform slightly to achieve a better fit to the edge features of an image. One example of such an application is to refine the output of a hand segmented image.
Because values in the Laplacian feature image will tend to be low except near edge features, this filter is not effective for segmenting large image regions from small seed surfaces.
This filter requires two inputs. The first input is a seed image. This seed image must contain an isosurface that you want to use as the seed for your segmentation. It can be a binary, graylevel, or floating point image. The only requirement is that it contain a closed isosurface that you will identify as the seed by setting the IsosurfaceValue parameter of the filter. For a binary image you will want to set your isosurface value halfway between your on and off values (i.e. for 0's and 1's, use an isosurface value of 0.5).
The second input is the feature image. This is the image from which the speed function will be calculated. For most applications, this is the image that you want to segment. The desired isosurface in your seed image should lie within the region of your feature image that you are trying to segment.

Note that this filter does no preprocessing of the feature image before thresholding. Because second derivative calculations are highly sensitive to noise, isotropic or anisotropic smoothing of the feature image can dramatically improve the results.

See SegmentationLevelSetImageFilter for more information on Inputs.
The filter outputs a single, scalar, real-valued image. Positive *values in the output image are inside the segmented region and negative *values in the image are outside of the inside region. The zero crossings of *the image correspond to the position of the level set front.
See SparseFieldLevelSetImageFilter and SegmentationLevelSetImageFilter for more information.
This filter has no parameters other than those described in SegmentationLevelSetImageFilter .
See also
LaplacianSegmentationLevelSetFunction ,
itk::simple::LaplacianSegmentationLevelSet for the procedural interface
itk::LaplacianSegmentationLevelSetImageFilter for the Doxygen on the original ITK class.

Definition at line 89 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

Public Types

using PixelIDTypeList = RealPixelIDTypeList
using Self = LaplacianSegmentationLevelSetImageFilter
- 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...
 LaplacianSegmentationLevelSetImageFilter ()
SelfReverseExpansionDirectionOff ()
SelfReverseExpansionDirectionOn ()
SelfSetCurvatureScaling (double CurvatureScaling)
SelfSetMaximumRMSError (double MaximumRMSError)
SelfSetNumberOfIterations (uint32_t NumberOfIterations)
SelfSetPropagationScaling (double PropagationScaling)
SelfSetReverseExpansionDirection (bool ReverseExpansionDirection)
std::string ToString () const
virtual ~LaplacianSegmentationLevelSetImageFilter ()
- 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}


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::ProcessObjectGetActiveProcess ()
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
NonCopyableoperator= (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::EventObjectGetITKEventObject (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::LaplacianSegmentationLevelSetImageFilter::MemberFunctionType = Image (Self::*)( const Image * initialImage, const Image * featureImage )

Setup for member function dispatching

Definition at line 181 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

◆ PixelIDTypeList

Define the pixels types supported by this filter

Definition at line 101 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

◆ Self

Constructor & Destructor Documentation

◆ ~LaplacianSegmentationLevelSetImageFilter()

virtual itk::simple::LaplacianSegmentationLevelSetImageFilter::~LaplacianSegmentationLevelSetImageFilter ( )


◆ LaplacianSegmentationLevelSetImageFilter()

itk::simple::LaplacianSegmentationLevelSetImageFilter::LaplacianSegmentationLevelSetImageFilter ( )

Default Constructor that takes no arguments and initializes default parameters

Member Function Documentation

◆ Execute() [1/2]

Image itk::simple::LaplacianSegmentationLevelSetImageFilter::Execute ( const Image initialImage,
const Image featureImage 

◆ Execute() [2/2]

Image itk::simple::LaplacianSegmentationLevelSetImageFilter::Execute ( Image &&  initialImage,
const Image featureImage 

Execute the filter on the input image

◆ ExecuteInternal()

template<class TImageType >
Image itk::simple::LaplacianSegmentationLevelSetImageFilter::ExecuteInternal ( const Image initialImage,
const Image featureImage 

◆ GetCurvatureScaling()

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

◆ GetElapsedIterations()

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

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 153 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

◆ GetMaximumRMSError()

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

◆ GetName()

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

Name of this class

Implements itk::simple::ProcessObject.

Definition at line 165 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

◆ GetNumberOfIterations()

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

◆ GetPropagationScaling()

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

◆ GetReverseExpansionDirection()

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

◆ GetRMSChange()

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

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 161 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

◆ ReverseExpansionDirectionOff()

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

◆ ReverseExpansionDirectionOn()

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

Set the value of ReverseExpansionDirection to true or false respectfully.

Definition at line 141 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

◆ SetCurvatureScaling()

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

◆ SetMaximumRMSError()

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

◆ SetNumberOfIterations()

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

◆ SetPropagationScaling()

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

◆ SetReverseExpansionDirection()

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

◆ ToString()

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

Print ourselves out

Reimplemented from itk::simple::ProcessObject.

Friends And Related Function Documentation

◆ detail::MemberFunctionAddressor< MemberFunctionType >

Member Data Documentation

◆ m_CurvatureScaling

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

◆ m_ElapsedIterations

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

◆ m_InPlace

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

◆ m_MaximumRMSError

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

◆ m_MemberFactory

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

◆ m_NumberOfIterations

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

◆ m_PropagationScaling

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

◆ m_ReverseExpansionDirection

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

◆ m_RMSChange

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

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