rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage > Class Template Reference

#include <rtkFDKWeightProjectionFilter.h>

Inheritance diagram for rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >:

Collaboration diagram for rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >:

Public Types
using	ConstPointer = itk::SmartPointer< const Self >
using	InputImageType = TInputImage
using	OutputImageRegionType = typename OutputImageType::RegionType
using	OutputImageType = TOutputImage
using	Pointer = itk::SmartPointer< Self >
using	Self = FDKWeightProjectionFilter
using	Superclass = itk::ImageToImageFilter< TInputImage, TOutputImage >

Public Member Functions
virtual ::itk::LightObject::Pointer	CreateAnother () const
const char *	GetNameOfClass () const override
virtual ThreeDCircularProjectionGeometry::Pointer	GetGeometry ()
virtual void	SetGeometry (ThreeDCircularProjectionGeometry *_arg)

Static Public Member Functions
static Pointer	New ()

Protected Member Functions
void	BeforeThreadedGenerateData () override
void	DynamicThreadedGenerateData (const OutputImageRegionType &outputRegionForThread) override
	FDKWeightProjectionFilter ()=default
void	VerifyPreconditions () const override
	~FDKWeightProjectionFilter () override=default

Private Attributes
std::vector< double >	m_ConstantProjectionFactor
ThreeDCircularProjectionGeometry::Pointer	m_Geometry
std::vector< double >	m_TiltAngles

Detailed Description

template<class TInputImage, class TOutputImage = TInputImage>
class rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >

Weighting of projections to correct for the divergence in filtered backprojection reconstruction algorithms. The weighting comprises:

• the 2D weighting of the FDK algorithm [Feldkamp, 1984],
• its modification described in [Rit and Clackdoyle, CT meeting, 2014] for tilted detector
• the correction of the ramp factor for divergent full scan,
• the angular weighting for the final 3D integral of FDK. Note that SourceToDetectorDistance, SourceToDetectorIsocenter SouceOffsets and ProjectionOffsets are accounted for on a per projection basis but InPlaneRotation and OutOfPlaneRotation are not accounted for.

  Author

  Simon Rit

  Test:

  rtkfdktest.cxx, rtkrampfiltertest.cxx, rtkdisplaceddetectortest.cxx, rtkshortscantest.cxx, rtkfdkprojweightcompcudatest.cxx

Definition at line 51 of file rtkFDKWeightProjectionFilter.h.

Member Typedef Documentation

ConstPointer

template<class TInputImage , class TOutputImage = TInputImage>

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

Definition at line 60 of file rtkFDKWeightProjectionFilter.h.

InputImageType

template<class TInputImage , class TOutputImage = TInputImage>

using rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::InputImageType = TInputImage

Some convenient type alias.

Definition at line 63 of file rtkFDKWeightProjectionFilter.h.

OutputImageRegionType

template<class TInputImage , class TOutputImage = TInputImage>

using rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::OutputImageRegionType = typename OutputImageType::RegionType

Definition at line 65 of file rtkFDKWeightProjectionFilter.h.

OutputImageType

template<class TInputImage , class TOutputImage = TInputImage>

using rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::OutputImageType = TOutputImage

Definition at line 64 of file rtkFDKWeightProjectionFilter.h.

Pointer

template<class TInputImage , class TOutputImage = TInputImage>

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

Definition at line 59 of file rtkFDKWeightProjectionFilter.h.

Self

template<class TInputImage , class TOutputImage = TInputImage>

using rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::Self = FDKWeightProjectionFilter

Standard class type alias.

Definition at line 57 of file rtkFDKWeightProjectionFilter.h.

Superclass

template<class TInputImage , class TOutputImage = TInputImage>

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

Definition at line 58 of file rtkFDKWeightProjectionFilter.h.

Constructor & Destructor Documentation

FDKWeightProjectionFilter()

template<class TInputImage , class TOutputImage = TInputImage>

rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::FDKWeightProjectionFilter ( )

protecteddefault

~FDKWeightProjectionFilter()

template<class TInputImage , class TOutputImage = TInputImage>

rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::~FDKWeightProjectionFilter ( )

overrideprotecteddefault

Member Function Documentation

BeforeThreadedGenerateData()

template<class TInputImage , class TOutputImage = TInputImage>

void rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::BeforeThreadedGenerateData ( )

overrideprotected

CreateAnother()

template<class TInputImage , class TOutputImage = TInputImage>

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

virtual

Reimplemented from itk::Object.

DynamicThreadedGenerateData()

template<class TInputImage , class TOutputImage = TInputImage>

void rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::DynamicThreadedGenerateData ( const OutputImageRegionType &  outputRegionForThread )

overrideprotected

GetGeometry()

template<class TInputImage , class TOutputImage = TInputImage>

virtual ThreeDCircularProjectionGeometry::Pointer rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::GetGeometry ( )

virtual

Get/ Set geometry structure

GetNameOfClass()

template<class TInputImage , class TOutputImage = TInputImage>

const char* rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::GetNameOfClass ( ) const

overridevirtual

Runtime information support.

Reimplemented from itk::ProcessObject.

New()

template<class TInputImage , class TOutputImage = TInputImage>

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

static

Standard New method.

SetGeometry()

template<class TInputImage , class TOutputImage = TInputImage>

virtual void rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::SetGeometry ( ThreeDCircularProjectionGeometry *  _arg )

virtual

Get/ Set geometry structure

VerifyPreconditions()

template<class TInputImage , class TOutputImage = TInputImage>

void rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::VerifyPreconditions ( ) const

overrideprotectedvirtual

Checks that inputs are correctly set.

Reimplemented from itk::ProcessObject.

Member Data Documentation

m_ConstantProjectionFactor

template<class TInputImage , class TOutputImage = TInputImage>

std::vector<double> rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::m_ConstantProjectionFactor

private

Angular weights for each projection

Definition at line 94 of file rtkFDKWeightProjectionFilter.h.

m_Geometry

template<class TInputImage , class TOutputImage = TInputImage>

ThreeDCircularProjectionGeometry::Pointer rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::m_Geometry

private

Geometrical description of the system

Definition at line 100 of file rtkFDKWeightProjectionFilter.h.

m_TiltAngles

template<class TInputImage , class TOutputImage = TInputImage>

std::vector<double> rtk::FDKWeightProjectionFilter< TInputImage, TOutputImage >::m_TiltAngles

private

Tilt angles with respect to the conventional situation

Definition at line 97 of file rtkFDKWeightProjectionFilter.h.

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

• rtkFDKWeightProjectionFilter.h