rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision > Class Template Reference

#include <rtkFFTRampImageFilter.h>

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

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

Public Types
typedef itk::SmartPointer< const Self >	ConstPointer
typedef FFTInputImageType::Pointer	FFTInputImagePointer
typedef Superclass::FFTInputImageType	FFTInputImageType
typedef FFTOutputImageType::Pointer	FFTOutputImagePointer
typedef Superclass::FFTOutputImageType	FFTOutputImageType
typedef TFFTPrecision	FFTPrecisionType
typedef InputImageType::IndexType	IndexType
typedef TInputImage	InputImageType
typedef TOutputImage	OutputImageType
typedef itk::SmartPointer< Self >	Pointer
typedef FFTRampImageFilter	Self
typedef InputImageType::SizeType	SizeType
typedef rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >	Superclass
Public Types inherited from rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >
typedef itk::SmartPointer< const Self >	ConstPointer
typedef FFTInputImageType::Pointer	FFTInputImagePointer
typedef itk::Image< TFFTPrecision, TInputImage::ImageDimension >	FFTInputImageType
typedef FFTOutputImageType::Pointer	FFTOutputImagePointer
typedef itk::Image< std::complex< TFFTPrecision >, TInputImage::ImageDimension >	FFTOutputImageType
typedef InputImageType::IndexType	IndexType
typedef TInputImage	InputImageType
typedef TOutputImage	OutputImageType
typedef itk::SmartPointer< Self >	Pointer
typedef InputImageType::RegionType	RegionType
typedef FFTProjectionsConvolutionImageFilter	Self
typedef InputImageType::SizeType	SizeType
typedef itk::ImageToImageFilter< TInputImage, TOutputImage >	Superclass
typedef itk::Vector< int, 2 >	ZeroPadFactorsType

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 size) override
virtual	~FFTRampImageFilter () override
Protected Member Functions inherited from rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >
void	AfterThreadedGenerateData () override
void	BeforeThreadedGenerateData () override
	FFTProjectionsConvolutionImageFilter ()
void	GenerateInputRequestedRegion () override
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 ()
virtual	~FFTProjectionsConvolutionImageFilter () override
virtual FFTInputImagePointer	PadInputImageRegion (const RegionType &inputRegion)
RegionType	GetPaddedImageRegion (const RegionType &inputRegion)

Private Member Functions
	FFTRampImageFilter (const Self &)
void	operator= (const Self &)

Private Attributes
double	m_CosineCutFrequency
double	m_HammingFrequency
double	m_HannCutFrequency
double	m_HannCutFrequencyY
SizeType	m_PreviousKernelUpdateSize
double	m_RamLakCutFrequency
double	m_SheppLoganCutFrequency

Additional Inherited Members
Static Public Attributes inherited from rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >
static const unsigned int	ImageDimension = TOutputImage::ImageDimension
Protected Attributes inherited from rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision >
int	m_KernelDimension
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 http://hdl.handle.net/10380/3154)

Test:

rtkrampfiltertest.cxx

Author

Simon Rit

Definition at line 62 of file rtkFFTRampImageFilter.h.

Member Typedef Documentation

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

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

Definition at line 72 of file rtkFFTRampImageFilter.h.

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

typedef FFTInputImageType::Pointer rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTInputImagePointer

Definition at line 82 of file rtkFFTRampImageFilter.h.

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

typedef Superclass::FFTInputImageType rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTInputImageType

Definition at line 81 of file rtkFFTRampImageFilter.h.

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

typedef FFTOutputImageType::Pointer rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTOutputImagePointer

Definition at line 84 of file rtkFFTRampImageFilter.h.

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

typedef Superclass::FFTOutputImageType rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTOutputImageType

Definition at line 83 of file rtkFFTRampImageFilter.h.

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

typedef TFFTPrecision rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTPrecisionType

Definition at line 77 of file rtkFFTRampImageFilter.h.

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

typedef InputImageType::IndexType rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::IndexType

Definition at line 78 of file rtkFFTRampImageFilter.h.

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

typedef TInputImage rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::InputImageType

Some convenient typedefs.

Definition at line 75 of file rtkFFTRampImageFilter.h.

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

typedef TOutputImage rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::OutputImageType

Definition at line 76 of file rtkFFTRampImageFilter.h.

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

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

Definition at line 71 of file rtkFFTRampImageFilter.h.

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

typedef FFTRampImageFilter rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::Self

Standard class typedefs.

Definition at line 67 of file rtkFFTRampImageFilter.h.

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

typedef InputImageType::SizeType rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::SizeType

Definition at line 79 of file rtkFFTRampImageFilter.h.

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

typedef rtk::FFTProjectionsConvolutionImageFilter< TInputImage, TOutputImage, TFFTPrecision> rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::Superclass

Definition at line 70 of file rtkFFTRampImageFilter.h.

Constructor & Destructor Documentation

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

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

protected

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

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

inlineoverrideprotectedvirtual

Definition at line 136 of file rtkFFTRampImageFilter.h.

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

rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::FFTRampImageFilter ( const Self &  )

private

Member Function Documentation

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

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

(

)

const

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

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

overrideprotected

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

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

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

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

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 >.

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:

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

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:

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

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

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

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

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

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:

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

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:

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

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

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

static

Standard New method.

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

void rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::operator= ( const Self &  )

private

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

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

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

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

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_CosineCutFrequency

private

Definition at line 153 of file rtkFFTRampImageFilter.h.

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

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_HammingFrequency

private

Definition at line 154 of file rtkFFTRampImageFilter.h.

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

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_HannCutFrequency

private

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

Definition at line 152 of file rtkFFTRampImageFilter.h.

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

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_HannCutFrequencyY

private

Definition at line 155 of file rtkFFTRampImageFilter.h.

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

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

private

Definition at line 162 of file rtkFFTRampImageFilter.h.

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

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_RamLakCutFrequency

private

Cut frequency of Ram-Lak and Shepp-Logan

Definition at line 159 of file rtkFFTRampImageFilter.h.

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

double rtk::FFTRampImageFilter< TInputImage, TOutputImage, TFFTPrecision >::m_SheppLoganCutFrequency

private

Definition at line 160 of file rtkFFTRampImageFilter.h.

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

• rtkFFTRampImageFilter.h