Blurs an image while preserving edges. More...

#include <sitkBilateralImageFilter.h>

Inheritance diagram for itk::simple::BilateralImageFilter:

Collaboration diagram for itk::simple::BilateralImageFilter:

Detailed Description

Blurs an image while preserving edges.

This filter uses bilateral filtering to blur an image using both domain and range "neighborhoods". Pixels that are close to a pixel in the image domain and similar to a pixel in the image range are used to calculate the filtered value. Two gaussian kernels (one in the image domain and one in the image range) are used to smooth the image. The result is an image that is smoothed in homogeneous regions yet has edges preserved. The result is similar to anisotropic diffusion but the implementation in non-iterative. Another benefit to bilateral filtering is that any distance metric can be used for kernel smoothing the image range. Hence, color images can be smoothed as vector images, using the CIE distances between intensity values as the similarity metric (the Gaussian kernel for the image domain is evaluated using CIE distances). A separate version of this filter will be designed for color and vector images.

Bilateral filtering is capable of reducing the noise in an image by an order of magnitude while maintaining edges.

The bilateral operator used here was described by Tomasi and Manduchi (Bilateral Filtering for Gray and ColorImages. IEEE ICCV. 1998.)

See also: GaussianOperator; RecursiveGaussianImageFilter; DiscreteGaussianImageFilter; AnisotropicDiffusionImageFilter; Image; Neighborhood; NeighborhoodOperator

TodoSupport color images

Support vector images

See also: itk::simple::Bilateral for the procedural interface; itk::BilateralImageFilter for the Doxygen on the original ITK class.

Definition at line 70 of file sitkBilateralImageFilter.h.

Public Types
using	PixelIDTypeList = BasicPixelIDTypeList

using	Self = BilateralImageFilter

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

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

Public Member Functions
	BilateralImageFilter ()

Image	Execute (const Image &image1)

double	GetDomainSigma () const

std::string	GetName () const

unsigned int	GetNumberOfRangeGaussianSamples () const

double	GetRangeSigma () const

Self &	SetDomainSigma (double DomainSigma)

Self &	SetNumberOfRangeGaussianSamples (unsigned int NumberOfRangeGaussianSamples)

Self &	SetRangeSigma (double RangeSigma)

std::string	ToString () const

virtual	~BilateralImageFilter ()

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)

template<class TImageType >
Image	ExecuteInternalVectorImage (const Image &image)

Private Attributes
double	m_DomainSigma {4.0}

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

unsigned int	m_NumberOfRangeGaussianSamples {100u}

double	m_RangeSigma {50.0}

Friends
struct	detail::ExecuteInternalVectorImageAddressor< MemberFunctionType >

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::BilateralImageFilter::MemberFunctionType = Image (Self::*)( const Image& image1 )

private

Setup for member function dispatching

Definition at line 130 of file sitkBilateralImageFilter.h.

◆ PixelIDTypeList

using itk::simple::BilateralImageFilter::PixelIDTypeList = BasicPixelIDTypeList

Define the pixels types supported by this filter

Definition at line 82 of file sitkBilateralImageFilter.h.

◆ Self

using itk::simple::BilateralImageFilter::Self = BilateralImageFilter

Definition at line 72 of file sitkBilateralImageFilter.h.

Constructor & Destructor Documentation

◆ ~BilateralImageFilter()

virtual itk::simple::BilateralImageFilter::~BilateralImageFilter ( )

virtual

Destructor

◆ BilateralImageFilter()

itk::simple::BilateralImageFilter::BilateralImageFilter ( )

Default Constructor that takes no arguments and initializes default parameters

Member Function Documentation

◆ Execute()

Image itk::simple::BilateralImageFilter::Execute ( const Image & image1 )

Execute the filter on the input image

◆ ExecuteInternal()

template<class TImageType >

Image itk::simple::BilateralImageFilter::ExecuteInternal ( const Image & image1 )

private

◆ ExecuteInternalVectorImage()

template<class TImageType >

Image itk::simple::BilateralImageFilter::ExecuteInternalVectorImage ( const Image & image )

private

Dispatched methods which calls ExecuteInternal on each component

◆ GetDomainSigma()

double itk::simple::BilateralImageFilter::GetDomainSigma ( ) const

inline

Standard get/set macros for filter parameters. DomainSigma is specified in the same units as the Image spacing. RangeSigma is specified in the units of intensity.

Definition at line 93 of file sitkBilateralImageFilter.h.

◆ GetName()

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

inlinevirtual

Name of this class

Implements itk::simple::ProcessObject.

Definition at line 116 of file sitkBilateralImageFilter.h.

◆ GetNumberOfRangeGaussianSamples()

unsigned int itk::simple::BilateralImageFilter::GetNumberOfRangeGaussianSamples ( ) const

inline

Set/Get the number of samples in the approximation to the Gaussian used for the range smoothing. Samples are only generated in the range of [0, 4*m_RangeSigma]. Default is 100.

Definition at line 113 of file sitkBilateralImageFilter.h.

◆ GetRangeSigma()

double itk::simple::BilateralImageFilter::GetRangeSigma ( ) const

inline

Standard get/set macros for filter parameters. DomainSigma is specified in the same units as the Image spacing. RangeSigma is specified in the units of intensity.

Definition at line 103 of file sitkBilateralImageFilter.h.

◆ SetDomainSigma()

Self& itk::simple::BilateralImageFilter::SetDomainSigma ( double DomainSigma )

inline

Convenience get/set methods for setting all domain parameters to the same values.

Definition at line 88 of file sitkBilateralImageFilter.h.

◆ SetNumberOfRangeGaussianSamples()

Self& itk::simple::BilateralImageFilter::SetNumberOfRangeGaussianSamples ( unsigned int NumberOfRangeGaussianSamples )

inline

Set/Get the number of samples in the approximation to the Gaussian used for the range smoothing. Samples are only generated in the range of [0, 4*m_RangeSigma]. Default is 100.

Definition at line 108 of file sitkBilateralImageFilter.h.

◆ SetRangeSigma()

Self& itk::simple::BilateralImageFilter::SetRangeSigma ( double RangeSigma )

inline

Standard get/set macros for filter parameters. DomainSigma is specified in the same units as the Image spacing. RangeSigma is specified in the units of intensity.

Definition at line 98 of file sitkBilateralImageFilter.h.