SimpleITK  1.0.1
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:

Public Types

typedef RealPixelIDTypeList PixelIDTypeList
typedef LaplacianSegmentationLevelSetImageFilter Self
- Public Types inherited from itk::simple::ImageFilter< 2 >
typedef ImageFilter Self
- Public Types inherited from itk::simple::ProcessObject
typedef ProcessObject Self

Public Member Functions

Image Execute (const Image &image1, const Image &image2)
Image Execute (const Image &image1, const Image &image2, double maximumRMSError, double propagationScaling, double curvatureScaling, uint32_t numberOfIterations, bool reverseExpansionDirection)
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
 ~LaplacianSegmentationLevelSetImageFilter ()
- Public Member Functions inherited from itk::simple::ImageFilter< 2 >
 ImageFilter ()
virtual ~ImageFilter ()=0
- Public Member Functions inherited from itk::simple::ProcessObject
virtual void Abort ()
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

Private Types

typedef Image(Self::* MemberFunctionType) (const Image &image1, const Image &image2)

Private Member Functions

template<class TImageType >
Image ExecuteInternal (const Image &image1, const Image &image2)

Private Attributes

double m_CurvatureScaling
uint32_t m_ElapsedIterations
double m_MaximumRMSError
nsstd::auto_ptr< detail::MemberFunctionFactory< MemberFunctionType > > m_MemberFactory
uint32_t m_NumberOfIterations
double m_PropagationScaling
bool m_ReverseExpansionDirection
double m_RMSChange


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 void SetGlobalDefaultNumberOfThreads (unsigned int n)
static unsigned int GetGlobalDefaultNumberOfThreads ()
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...
- 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) throw ()
virtual void PreUpdate (itk::ProcessObject *p)
virtual void RemoveITKObserver (EventCommand &e)
- Protected Member Functions inherited from itk::simple::NonCopyable
 NonCopyable ()
- Static Protected Member Functions inherited from itk::simple::ImageFilter< 2 >
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 TImageType >
static Image CastITKToImage (TImageType *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)
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)

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 segmentated 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 78 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

Member Typedef Documentation

typedef Image(Self::* itk::simple::LaplacianSegmentationLevelSetImageFilter::MemberFunctionType) (const Image &image1, const Image &image2)

Setup for member function dispatching

Definition at line 172 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

Define the pixels types supported by this filter

Definition at line 90 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

Constructor & Destructor Documentation

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

Default Constructor that takes no arguments and initializes default parameters

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


Member Function Documentation

Image itk::simple::LaplacianSegmentationLevelSetImageFilter::Execute ( const Image image1,
const Image image2 

Execute the filter on the input images

Image itk::simple::LaplacianSegmentationLevelSetImageFilter::Execute ( const Image image1,
const Image image2,
double  maximumRMSError,
double  propagationScaling,
double  curvatureScaling,
uint32_t  numberOfIterations,
bool  reverseExpansionDirection 

Execute the filter on the input images with the given parameters

template<class TImageType >
Image itk::simple::LaplacianSegmentationLevelSetImageFilter::ExecuteInternal ( const Image image1,
const Image image2 
double itk::simple::LaplacianSegmentationLevelSetImageFilter::GetCurvatureScaling ( ) const
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 143 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

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

Name of this class

Implements itk::simple::ProcessObject.

Definition at line 154 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

uint32_t itk::simple::LaplacianSegmentationLevelSetImageFilter::GetNumberOfIterations ( ) const
double itk::simple::LaplacianSegmentationLevelSetImageFilter::GetPropagationScaling ( ) const
bool itk::simple::LaplacianSegmentationLevelSetImageFilter::GetReverseExpansionDirection ( ) const
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 151 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

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

Set the value of ReverseExpansionDirection to true or false respectfully.

Definition at line 131 of file sitkLaplacianSegmentationLevelSetImageFilter.h.

Self& itk::simple::LaplacianSegmentationLevelSetImageFilter::SetCurvatureScaling ( double  CurvatureScaling)
Self& itk::simple::LaplacianSegmentationLevelSetImageFilter::SetMaximumRMSError ( double  MaximumRMSError)
Self& itk::simple::LaplacianSegmentationLevelSetImageFilter::SetNumberOfIterations ( uint32_t  NumberOfIterations)
Self& itk::simple::LaplacianSegmentationLevelSetImageFilter::SetPropagationScaling ( double  PropagationScaling)
Self& itk::simple::LaplacianSegmentationLevelSetImageFilter::SetReverseExpansionDirection ( bool  ReverseExpansionDirection)
std::string itk::simple::LaplacianSegmentationLevelSetImageFilter::ToString ( ) const

Print ourselves out

Reimplemented from itk::simple::ProcessObject.

Friends And Related Function Documentation

Member Data Documentation

double itk::simple::LaplacianSegmentationLevelSetImageFilter::m_CurvatureScaling
uint32_t itk::simple::LaplacianSegmentationLevelSetImageFilter::m_ElapsedIterations
double itk::simple::LaplacianSegmentationLevelSetImageFilter::m_MaximumRMSError
nsstd::auto_ptr<detail::MemberFunctionFactory<MemberFunctionType> > itk::simple::LaplacianSegmentationLevelSetImageFilter::m_MemberFactory
uint32_t itk::simple::LaplacianSegmentationLevelSetImageFilter::m_NumberOfIterations
double itk::simple::LaplacianSegmentationLevelSetImageFilter::m_PropagationScaling
bool itk::simple::LaplacianSegmentationLevelSetImageFilter::m_ReverseExpansionDirection
double itk::simple::LaplacianSegmentationLevelSetImageFilter::m_RMSChange

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