#include <rtkFFTRampImageFilter.h>

Inheritance diagram for rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >:

Collaboration diagram for rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >:

Public Types
using	ConstPointer = itk::SmartPointer< const Self >

using	FFTInputImagePointer = typename FFTInputImageType::Pointer

using	FFTInputImageType = typename Superclass::FFTInputImageType

using	FFTOutputImagePointer = typename FFTOutputImageType::Pointer

using	FFTOutputImageType = typename Superclass::FFTOutputImageType

using	FFTPrecisionType = TFFTPrecision

using	IndexType = typename InputImageType::IndexType

using	InputImageType = TInputImage

using	OutputImageType = TOutputImage

using	Pointer = itk::SmartPointer< Self >

using	Self = FFTRampImageFilter

using	SizeType = typename InputImageType::SizeType

using	Superclass = rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >

Public Types inherited from rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >
using	ConstPointer = itk::SmartPointer< const Self >

using	FFTInputImagePointer = typename FFTInputImageType::Pointer

using	FFTInputImageType = typename itk::Image< TFFTPrecision, TInputImage::ImageDimension >

using	FFTOutputImagePointer = typename FFTOutputImageType::Pointer

using	FFTOutputImageType = typename itk::Image< std::complex< TFFTPrecision >, TInputImage::ImageDimension >

using	IndexType = typename InputImageType::IndexType

using	InputImageType = TInputImage

using	OutputImageType = TOutputImage

using	Pointer = itk::SmartPointer< Self >

using	RegionType = typename InputImageType::RegionType

using	Self = FFTProjectionsConvolutionImageFilter

using	SizeType = typename InputImageType::SizeType

using	Superclass = itk::ImageToImageFilter< TInputImage, TOutputImage >

using	ZeroPadFactorsType = itk::Vector< int, 2 >

Public Member Functions
virtual ::itk::LightObject::Pointer	CreateAnother () const


virtual const char *	GetNameOfClass () const


virtual double	GetHannCutFrequency () const

	itkSetMacro (HannCutFrequency, double)


virtual double	GetCosineCutFrequency () const

	itkSetMacro (CosineCutFrequency, double)


virtual double	GetHammingFrequency () const

	itkSetMacro (HammingFrequency, double)


virtual double	GetHannCutFrequencyY () const

	itkSetMacro (HannCutFrequencyY, double)


virtual double	GetRamLakCutFrequency () const

	itkSetMacro (RamLakCutFrequency, double)


virtual double	GetSheppLoganCutFrequency () const

	itkSetMacro (SheppLoganCutFrequency, double)

Public Member Functions inherited from rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >
virtual int	GetGreatestPrimeFactor () const

virtual void	SetGreatestPrimeFactor (int _arg)

virtual double	GetTruncationCorrection () const

virtual void	SetTruncationCorrection (double _arg)

virtual ZeroPadFactorsType	GetZeroPadFactors () const

virtual void	SetZeroPadFactors (ZeroPadFactorsType _arg)

Static Public Member Functions
static Pointer	New ()

Protected Member Functions
	FFTRampImageFilter ()

void	GenerateInputRequestedRegion () override

void	UpdateFFTProjectionsConvolutionKernel (const SizeType s) override

	~FFTRampImageFilter () override=default

Protected Member Functions inherited from rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >
void	AfterThreadedGenerateData () override

void	BeforeThreadedGenerateData () override

	FFTProjectionsConvolutionImageFilter ()

int	GreatestPrimeFactor (int n) const

bool	IsPrime (int n) const

void	PrintSelf (std::ostream &os, itk::Indent indent) const override

void	ThreadedGenerateData (const RegionType &outputRegionForThread, ThreadIdType threadId) override

virtual void	UpdateTruncationMirrorWeights ()

	~FFTProjectionsConvolutionImageFilter () override=default

virtual FFTInputImagePointer	PadInputImageRegion (const RegionType &inputRegion)

RegionType	GetPaddedImageRegion (const RegionType &inputRegion)

Private Attributes
double	m_CosineCutFrequency { 0. }

double	m_HammingFrequency { 0. }

double	m_HannCutFrequency { 0. }

double	m_HannCutFrequencyY { 0. }

SizeType	m_PreviousKernelUpdateSize

double	m_RamLakCutFrequency { 0. }

double	m_SheppLoganCutFrequency { 0. }

Additional Inherited Members
Static Public Attributes inherited from rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >
static constexpr unsigned int	ImageDimension = TOutputImage::ImageDimension

Protected Attributes inherited from rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >
int	m_KernelDimension { 1 }

FFTOutputImagePointer	m_KernelFFT

std::vector< TFFTPrecision >	m_TruncationMirrorWeights

Detailed Description

template<class TInputImage, class TOutputImage = TInputImage, class TFFTPrecision = double>
class rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >

Implements the ramp image filter of the filtered backprojection algorithm.

The filter code is based on FFTProjectionsConvolutionImageFilter by Gaetan Lehmann (see https://hdl.handle.net/10380/3154)

Test:: rtkrampfiltertest.cxx

Author: Simon Rit

Definition at line 74 of file rtkFFTRampImageFilter.h.

Member Typedef Documentation

◆ ConstPointer

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::ConstPointer = itk::SmartPointer<const Self>

Definition at line 84 of file rtkFFTRampImageFilter.h.

◆ FFTInputImagePointer

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTInputImagePointer = typename FFTInputImageType::Pointer

Definition at line 94 of file rtkFFTRampImageFilter.h.

◆ FFTInputImageType

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTInputImageType = typename Superclass::FFTInputImageType

Definition at line 93 of file rtkFFTRampImageFilter.h.

◆ FFTOutputImagePointer

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTOutputImagePointer = typename FFTOutputImageType::Pointer

Definition at line 96 of file rtkFFTRampImageFilter.h.

◆ FFTOutputImageType

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTOutputImageType = typename Superclass::FFTOutputImageType

Definition at line 95 of file rtkFFTRampImageFilter.h.

◆ FFTPrecisionType

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTPrecisionType = TFFTPrecision

Definition at line 89 of file rtkFFTRampImageFilter.h.

◆ IndexType

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::IndexType = typename InputImageType::IndexType

Definition at line 90 of file rtkFFTRampImageFilter.h.

◆ InputImageType

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::InputImageType = TInputImage

Some convenient type alias.

Definition at line 87 of file rtkFFTRampImageFilter.h.

◆ OutputImageType

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::OutputImageType = TOutputImage

Definition at line 88 of file rtkFFTRampImageFilter.h.

◆ Pointer

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::Pointer = itk::SmartPointer<Self>

Definition at line 83 of file rtkFFTRampImageFilter.h.

◆ Self

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::Self = FFTRampImageFilter

Standard class type alias.

Definition at line 81 of file rtkFFTRampImageFilter.h.

◆ SizeType

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::SizeType = typename InputImageType::SizeType

Definition at line 91 of file rtkFFTRampImageFilter.h.

◆ Superclass

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

using rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::Superclass = rtk::FFTProjectionsConvolutionImageFilter<TInputImage, TOutputImage, TFFTPrecision>

Definition at line 82 of file rtkFFTRampImageFilter.h.

Constructor & Destructor Documentation

◆ FFTRampImageFilter()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTRampImageFilter ( )

protected

◆ ~FFTRampImageFilter()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::~FFTRampImageFilter ( )

overrideprotecteddefault

Member Function Documentation

◆ CreateAnother()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

virtual::itk::LightObject::Pointer rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::CreateAnother ( ) const

virtual

Reimplemented from itk::Object.

◆ GenerateInputRequestedRegion()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

void rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::GenerateInputRequestedRegion ( )

overrideprotectedvirtual

Reimplemented from rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >.

◆ GetCosineCutFrequency()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

virtual double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::GetCosineCutFrequency ( ) const

virtual

Set/Get the Cosine Cut window frequency. 0 (default) disables it

◆ GetHammingFrequency()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

virtual double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::GetHammingFrequency ( ) const

virtual

Set/Get the Hamming window frequency. 0 (default) disables it

◆ GetHannCutFrequency()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

virtual double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::GetHannCutFrequency ( ) const

virtual

Set/Get the Hann window frequency. 0 (default) disables it

◆ GetHannCutFrequencyY()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

virtual double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::GetHannCutFrequencyY ( ) const

virtual

Set/Get the Hann window frequency in Y direction. 0 (default) disables it

◆ GetNameOfClass()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

virtual const char* rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::GetNameOfClass ( ) const

virtual

Runtime information support.

Reimplemented from rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >.

◆ GetRamLakCutFrequency()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

virtual double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::GetRamLakCutFrequency ( ) const

virtual

Set/Get the Ram-Lak window frequency (0...1). 0 (default) disable it. Equation and further explanation about Ram-Lak filter could be found in:

Fundamentals of 2D and 3D reconstruction (by Dr. Gunter Lauritsch). https://campar.in.tum.de/twiki/pub/Chair/TeachingWs04IOIV/08CTReconstruction.pdf
Reconstruction. http://oftankonyv.reak.bme.hu/tiki-index.php?page=Reconstruction

◆ GetSheppLoganCutFrequency()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

virtual double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::GetSheppLoganCutFrequency ( ) const

virtual

Set/Get the Shepp-Logan window frequency (0...1). 0 (default) disable it. Equation and further explanation about Shepp-Logan filter could be found in:

Fundamentals of 2D and 3D reconstruction (by Dr. Gunter Lauritsch). https://campar.in.tum.de/twiki/pub/Chair/TeachingWs04IOIV/08CTReconstruction.pdf
Reconstruction. http://oftankonyv.reak.bme.hu/tiki-index.php?page=Reconstruction

◆ itkSetMacro() [1/6]

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::itkSetMacro	(	HannCutFrequency	,
		double
	)

Set/Get the Hann window frequency. 0 (default) disables it

◆ itkSetMacro() [2/6]

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::itkSetMacro	(	CosineCutFrequency	,
		double
	)

Set/Get the Cosine Cut window frequency. 0 (default) disables it

◆ itkSetMacro() [3/6]

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::itkSetMacro	(	HammingFrequency	,
		double
	)

Set/Get the Hamming window frequency. 0 (default) disables it

◆ itkSetMacro() [4/6]

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::itkSetMacro	(	HannCutFrequencyY	,
		double
	)

Set/Get the Hann window frequency in Y direction. 0 (default) disables it

◆ itkSetMacro() [5/6]

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::itkSetMacro	(	RamLakCutFrequency	,
		double
	)

Set/Get the Ram-Lak window frequency (0...1). 0 (default) disable it. Equation and further explanation about Ram-Lak filter could be found in:

Fundamentals of 2D and 3D reconstruction (by Dr. Gunter Lauritsch). https://campar.in.tum.de/twiki/pub/Chair/TeachingWs04IOIV/08CTReconstruction.pdf
Reconstruction. http://oftankonyv.reak.bme.hu/tiki-index.php?page=Reconstruction

◆ itkSetMacro() [6/6]

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::itkSetMacro	(	SheppLoganCutFrequency	,
		double
	)

Set/Get the Shepp-Logan window frequency (0...1). 0 (default) disable it. Equation and further explanation about Shepp-Logan filter could be found in:

Fundamentals of 2D and 3D reconstruction (by Dr. Gunter Lauritsch). https://campar.in.tum.de/twiki/pub/Chair/TeachingWs04IOIV/08CTReconstruction.pdf
Reconstruction. http://oftankonyv.reak.bme.hu/tiki-index.php?page=Reconstruction

◆ New()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

static Pointer rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::New ( )

static

Standard New method.

◆ UpdateFFTProjectionsConvolutionKernel()

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

void rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::UpdateFFTProjectionsConvolutionKernel ( const SizeType s )

overrideprotectedvirtual

Creates and return a pointer to one line of the ramp kernel in Fourier space. Used in generate data functions.

Implements rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >.

Member Data Documentation

◆ m_CosineCutFrequency

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_CosineCutFrequency { 0. }

private

Definition at line 169 of file rtkFFTRampImageFilter.h.

◆ m_HammingFrequency

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_HammingFrequency { 0. }

private

Definition at line 170 of file rtkFFTRampImageFilter.h.

◆ m_HannCutFrequency

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_HannCutFrequency { 0. }

private

Cut frequency of Hann, Cosine and Hamming windows. The first one which is non-zero is used.

Definition at line 168 of file rtkFFTRampImageFilter.h.

◆ m_HannCutFrequencyY

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_HannCutFrequencyY { 0. }

private

Definition at line 171 of file rtkFFTRampImageFilter.h.

◆ m_PreviousKernelUpdateSize

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

SizeType rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_PreviousKernelUpdateSize

private

Definition at line 178 of file rtkFFTRampImageFilter.h.

◆ m_RamLakCutFrequency

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_RamLakCutFrequency { 0. }

private

Cut frequency of Ram-Lak and Shepp-Logan

Definition at line 175 of file rtkFFTRampImageFilter.h.

◆ m_SheppLoganCutFrequency

template<class TInputImage , class TOutputImage = TInputImage, class TFFTPrecision = double>

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_SheppLoganCutFrequency { 0. }

private

Definition at line 176 of file rtkFFTRampImageFilter.h.

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

rtkFFTRampImageFilter.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

template<class TInputImage, class TOutputImage = TInputImage, class TFFTPrecision = double> class rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >

Member Typedef Documentation

◆ ConstPointer

◆ FFTInputImagePointer

◆ FFTInputImageType

◆ FFTOutputImagePointer

◆ FFTOutputImageType

◆ FFTPrecisionType

◆ IndexType

◆ InputImageType

◆ OutputImageType

◆ Pointer

◆ Self

◆ SizeType

◆ Superclass

Constructor & Destructor Documentation

◆ FFTRampImageFilter()

◆ ~FFTRampImageFilter()

Member Function Documentation

◆ CreateAnother()

◆ GenerateInputRequestedRegion()

◆ GetCosineCutFrequency()

◆ GetHammingFrequency()

◆ GetHannCutFrequency()

◆ GetHannCutFrequencyY()

◆ GetNameOfClass()

◆ GetRamLakCutFrequency()

◆ GetSheppLoganCutFrequency()

◆ itkSetMacro() [1/6]

◆ itkSetMacro() [2/6]

◆ itkSetMacro() [3/6]

◆ itkSetMacro() [4/6]

◆ itkSetMacro() [5/6]

◆ itkSetMacro() [6/6]

◆ New()

◆ UpdateFFTProjectionsConvolutionKernel()

Member Data Documentation

◆ m_CosineCutFrequency

◆ m_HammingFrequency

◆ m_HannCutFrequency

◆ m_HannCutFrequencyY

◆ m_PreviousKernelUpdateSize

◆ m_RamLakCutFrequency

◆ m_SheppLoganCutFrequency

template<class TInputImage, class TOutputImage = TInputImage, class TFFTPrecision = double>
class rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >