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

Denoise an image using min/max curvature flow. More...

#include <sitkMinMaxCurvatureFlowImageFilter.h>

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

Detailed Description

Denoise an image using min/max curvature flow.

MinMaxCurvatureFlowImageFilter implements a curvature driven image denoising algorithm. Iso-brightness contours in the grayscale input image are viewed as a level set. The level set is then evolved using a curvature-based speed function:

\[ I_t = F_{\mbox{minmax}} |\nabla I| \]

where \( F_{\mbox{minmax}} = \max(\kappa,0) \) if \( \mbox{Avg}_{\mbox{stencil}}(x) \) is less than or equal to \( T_{threshold} \) and \( \min(\kappa,0) \) , otherwise. \( \kappa \) is the mean curvature of the iso-brightness contour at point \( x \) .

In min/max curvature flow, movement is turned on or off depending on the scale of the noise one wants to remove. Switching depends on the average image value of a region of radius \( R \) around each point. The choice of \( R \) , the stencil radius, governs the scale of the noise to be removed.

The threshold value \( T_{threshold} \) is the average intensity obtained in the direction perpendicular to the gradient at point \( x \) at the extrema of the local neighborhood.

This filter make use of the multi-threaded finite difference solver hierarchy. Updates are computed using a MinMaxCurvatureFlowFunction object. A zero flux Neumann boundary condition is used when computing derivatives near the data boundary.

This filter assumes that the input and output types have the same dimensions. This filter also requires that the output image pixels are of a real type. This filter works for any dimensional images, however for dimensions greater than 3D, an expensive brute-force search is used to compute the local threshold.

Reference: "Level Set Methods and Fast Marching Methods", J.A. Sethian, Cambridge Press, Chapter 16, Second edition, 1999.

See also
itk::simple::MinMaxCurvatureFlow for the procedural interface
itk::MinMaxCurvatureFlowImageFilter for the Doxygen on the original ITK class.

Definition at line 64 of file sitkMinMaxCurvatureFlowImageFilter.h.

Public Types

using PixelIDTypeList = RealPixelIDTypeList
using Self = MinMaxCurvatureFlowImageFilter
- 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 &image1)
Image Execute (Image &&image1)
std::string GetName () const
uint32_t GetNumberOfIterations () const
int GetStencilRadius () const
double GetTimeStep () const
 MinMaxCurvatureFlowImageFilter ()
SelfSetNumberOfIterations (uint32_t NumberOfIterations)
SelfSetStencilRadius (int StencilRadius)
SelfSetTimeStep (double TimeStep)
std::string ToString () const
virtual ~MinMaxCurvatureFlowImageFilter ()
- 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 &image1)

Private Member Functions

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

Private Attributes

bool m_InPlace {false}
std::unique_ptr< detail::MemberFunctionFactory< MemberFunctionType > > m_MemberFactory
uint32_t m_NumberOfIterations {5u}
int m_StencilRadius {2}
double m_TimeStep {0.05}


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

Setup for member function dispatching

Definition at line 122 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ PixelIDTypeList

Define the pixels types supported by this filter

Definition at line 76 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ Self

Definition at line 66 of file sitkMinMaxCurvatureFlowImageFilter.h.

Constructor & Destructor Documentation

◆ ~MinMaxCurvatureFlowImageFilter()

virtual itk::simple::MinMaxCurvatureFlowImageFilter::~MinMaxCurvatureFlowImageFilter ( )


◆ MinMaxCurvatureFlowImageFilter()

itk::simple::MinMaxCurvatureFlowImageFilter::MinMaxCurvatureFlowImageFilter ( )

Default Constructor that takes no arguments and initializes default parameters

Member Function Documentation

◆ Execute() [1/2]

Image itk::simple::MinMaxCurvatureFlowImageFilter::Execute ( const Image image1)

◆ Execute() [2/2]

Image itk::simple::MinMaxCurvatureFlowImageFilter::Execute ( Image &&  image1)

Execute the filter on the input image

◆ ExecuteInternal()

template<class TImageType >
Image itk::simple::MinMaxCurvatureFlowImageFilter::ExecuteInternal ( const Image image1)

◆ GetName()

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

Name of this class

Implements itk::simple::ProcessObject.

Definition at line 106 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ GetNumberOfIterations()

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

Definition at line 93 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ GetStencilRadius()

int itk::simple::MinMaxCurvatureFlowImageFilter::GetStencilRadius ( ) const

Set/Get the stencil radius.

Definition at line 103 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ GetTimeStep()

double itk::simple::MinMaxCurvatureFlowImageFilter::GetTimeStep ( ) const

Definition at line 85 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ SetNumberOfIterations()

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

Definition at line 89 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ SetStencilRadius()

Self& itk::simple::MinMaxCurvatureFlowImageFilter::SetStencilRadius ( int  StencilRadius)

Set/Get the stencil radius.

Definition at line 98 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ SetTimeStep()

Self& itk::simple::MinMaxCurvatureFlowImageFilter::SetTimeStep ( double  TimeStep)

Definition at line 81 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ ToString()

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

Print ourselves out

Reimplemented from itk::simple::ProcessObject.

Friends And Related Function Documentation

◆ detail::MemberFunctionAddressor< MemberFunctionType >

Definition at line 126 of file sitkMinMaxCurvatureFlowImageFilter.h.

Member Data Documentation

◆ m_InPlace

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

Definition at line 140 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ m_MemberFactory

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

Definition at line 128 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ m_NumberOfIterations

uint32_t itk::simple::MinMaxCurvatureFlowImageFilter::m_NumberOfIterations {5u}

Definition at line 135 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ m_StencilRadius

int itk::simple::MinMaxCurvatureFlowImageFilter::m_StencilRadius {2}

Definition at line 137 of file sitkMinMaxCurvatureFlowImageFilter.h.

◆ m_TimeStep

double itk::simple::MinMaxCurvatureFlowImageFilter::m_TimeStep {0.05}

Definition at line 132 of file sitkMinMaxCurvatureFlowImageFilter.h.

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