itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage > Class Template Reference

#include <itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h>

Inheritance diagram for itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >:

Collaboration diagram for itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >:

Public Types
using	AccessorType = typename Superclass::AccessorType
using	FrequencyType = typename ImageType::SpacingType
using	FrequencyValueType = typename ImageType::SpacingValueType
using	ImageType = typename Superclass::ImageType
using	IndexType = typename Superclass::IndexType
using	InternalPixelType = typename Superclass::InternalPixelType
using	OffsetType = typename Superclass::OffsetType
using	PixelContainer = typename Superclass::PixelContainer
using	PixelContainerPointer = typename Superclass::PixelContainerPointer
using	PixelType = typename Superclass::PixelType
using	RegionType = typename Superclass::RegionType
using	Self = FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex
using	SizeType = typename Superclass::SizeType
using	Superclass = ImageRegionConstIteratorWithIndex< TImage >
Public Types inherited from itk::ImageRegionConstIteratorWithIndex< TImage >
using	AccessorType = typename Superclass::AccessorType
using	ImageType = typename Superclass::ImageType
using	IndexType = typename Superclass::IndexType
using	InternalPixelType = typename Superclass::InternalPixelType
using	OffsetType = typename Superclass::OffsetType
using	PixelContainer = typename Superclass::PixelContainer
using	PixelContainerPointer = typename Superclass::PixelContainerPointer
using	PixelType = typename Superclass::PixelType
using	RegionType = typename Superclass::RegionType
using	Self = ImageRegionConstIteratorWithIndex
using	SizeType = typename Superclass::SizeType
using	Superclass = ImageConstIteratorWithIndex< TImage >
Public Types inherited from itk::ImageConstIteratorWithIndex< TImage >
using	AccessorFunctorType = typename TImage::AccessorFunctorType
using	AccessorType = typename TImage::AccessorType
using	ImageType = TImage
using	IndexType = typename TImage::IndexType
using	IndexValueType = typename IndexType::IndexValueType
using	InternalPixelType = typename TImage::InternalPixelType
using	OffsetType = typename TImage::OffsetType
using	OffsetValueType = typename OffsetType::OffsetValueType
using	PixelContainer = typename TImage::PixelContainer
using	PixelContainerPointer = typename PixelContainer::Pointer
using	PixelType = typename TImage::PixelType
using	RegionType = typename TImage::RegionType
using	Self = ImageConstIteratorWithIndex
using	SizeType = typename TImage::SizeType
using	SizeValueType = typename SizeType::SizeValueType

Public Member Functions
	FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex ()
	FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex (const Superclass &it)
	FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex (const TImage *ptr, const RegionType &region)
IndexType	GetFrequencyBin () const
Public Member Functions inherited from itk::ImageRegionConstIteratorWithIndex< TImage >
	ImageRegionConstIteratorWithIndex ()
	ImageRegionConstIteratorWithIndex (const ImageConstIteratorWithIndex< TImage > &it)
	ImageRegionConstIteratorWithIndex (const TImage *ptr, const RegionType &region)
Self &	operator++ ()
Self &	operator-- ()
Public Member Functions inherited from itk::ImageConstIteratorWithIndex< TImage >
const IndexType &	GetIndex () const
const RegionType &	GetRegion () const
	ImageConstIteratorWithIndex ()
	ImageConstIteratorWithIndex (const Self &it)
	ImageConstIteratorWithIndex (const TImage *ptr, const RegionType &region)
bool	operator!= (const Self &it) const
bool	operator< (const Self &it) const
bool	operator<= (const Self &it) const
Self &	operator= (const Self &it)
bool	operator== (const Self &it) const
bool	operator> (const Self &it) const
bool	operator>= (const Self &it) const
virtual	~ImageConstIteratorWithIndex ()=default
void	SetIndex (const IndexType &ind)
PixelType	Get () const
const PixelType &	Value () const
void	GoToBegin ()
void	GoToReverseBegin ()
bool	IsAtReverseEnd () const
bool	IsAtEnd () const
bool	Remaining ()
IndexType	m_ZeroFrequencyIndex
FrequencyType	m_FrequencyOrigin
FrequencyType	m_FrequencySpacing
bool	m_ActualXDimensionIsOdd
FrequencyType	GetFrequency () const
FrequencyValueType	GetFrequencyModuloSquare () const
virtual const IndexType &	GetZeroFrequencyIndex () const
virtual const FrequencyType &	GetFrequencyOrigin () const
virtual const FrequencyType &	GetFrequencySpacing () const
void	SetActualXDimensionIsOdd (bool value)
virtual bool	GetActualXDimensionIsOdd ()
virtual void	ActualXDimensionIsOddOn ()
virtual void	ActualXDimensionIsOddOff ()
void	Init ()

Additional Inherited Members
Static Public Member Functions inherited from itk::ImageConstIteratorWithIndex< TImage >
static unsigned int	GetImageDimension ()
Static Public Attributes inherited from itk::ImageConstIteratorWithIndex< TImage >
static constexpr unsigned int	ImageDimension = TImage::ImageDimension
Protected Attributes inherited from itk::ImageConstIteratorWithIndex< TImage >
TImage::ConstWeakPointer	m_Image
IndexType	m_PositionIndex
IndexType	m_BeginIndex
IndexType	m_EndIndex
RegionType	m_Region
OffsetValueType	m_OffsetTable [ImageDimension+1]
const InternalPixelType *	m_Position
const InternalPixelType *	m_Begin
const InternalPixelType *	m_End
bool	m_Remaining
AccessorType	m_PixelAccessor
AccessorFunctorType	m_PixelAccessorFunctor

Detailed Description

template<typename TImage>
class itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >

A multi-dimensional iterator templated over image type that walks pixels within a region and is specialized to keep track of its image index location.

This class is a specialization of ImageRegionConstIteratorWithIndex, adding method GetFrequencyBins to give the frequency bins corresponding to image indices, and GetFrequency to get the frequency of the bin. The frequency bins depends on the image size. The default assumes that the image to iterate over is the output of a forward FFT filter, where the first index corresponds to 0 frequency, and Nyquist Frequencies are in the middle, between positive and negative frequencies.

This class can be specialized further to iterate over other frequency layouts, for example shifted images (where 0 frequency is in the middle of the image, and Nyquist are in the border). For different layout, use other frequency iterator.

This iterator is for the frequency layout that results from applying a FFT (vnl or fftw) to an image. The default ImageInformation is: Origin = {{0}}, Spacing = {{1}}. In this case the frequency values will be in the range: [-1/2, 1/2] Hz Or [-pi, pi] rad/s To modify those ranges: a) Avoid modifying the origin. The origin index always corresponds to zero frequency after a FFT. The range should be always centered around zero. b) The spacing control the range of frequencies (always around zero). If the spacing is = {{0.5}} we get a frequency range of [-1/4, 1/4] or [-pi/2, pi/2].

The frequency layout is assumed to be: where fs is frequency sampling, or frequency spacing (1.0 by default). If N is even: Nyquist frequency at index=N/2 is shared between + and - regions. <---------—positive f ------------—><---------—negative f-----------—> 0(DC) fs/N 2*fs/N ... (N/2 -1)*fs/N fs/2 -(N/2-1)*fs/N ... -2*fs/N -fs/N

Example: Size 6:

+ | -

0 <– DC Component (0 freq) 1 | 5 2 | 4 3 <– Shared between regions, unique Nyquist.

If N is odd: Nyquist frequency is not represented but there are symmetric largest frequencies at index=N/2, N/2 +1 <-------—positive f ------------—><---------—negative f--------------—> 0(DC) fs/N 2*fs/N ...... fs/2*(N-1)/N -fs/2*(N-1)/N ... -2*fs/N -fs/N

Example: Size 5:

+ | -

0 <– DC Component (0 freq) 1 | 4 2 | 3 <– Absolute Largest Frequency bins (+, -)

Please see ImageRegionConstIteratorWithIndex for more information.

See also

ForwardFFTImageFilter

MORE INFORMATION

For a complete description of the ITK Image Iterators and their API, please see the Iterators chapter in the ITK Software Guide. The ITK Software Guide is available in print and as a free .pdf download from https://www.itk.org.

See also

ImageRegionIteratorWithIndex

ImageConstIterator

ConditionalConstIterator

ConstNeighborhoodIterator

ConstShapedNeighborhoodIterator

ConstSliceIterator

CorrespondenceDataStructureIterator

FloodFilledFunctionConditionalConstIterator

FloodFilledImageFunctionConditionalConstIterator

FloodFilledImageFunctionConditionalIterator

FloodFilledSpatialFunctionConditionalConstIterator

FloodFilledSpatialFunctionConditionalIterator

ImageConstIterator

ImageConstIteratorWithIndex

ImageIterator

ImageIteratorWithIndex

ImageLinearConstIteratorWithIndex

ImageLinearIteratorWithIndex

ImageRandomConstIteratorWithIndex

ImageRandomIteratorWithIndex

ImageRegionConstIterator

ImageRegionConstIteratorWithIndex

ImageRegionExclusionConstIteratorWithIndex

ImageRegionExclusionIteratorWithIndex

ImageRegionIterator

ImageRegionIteratorWithIndex

ImageRegionReverseConstIterator

ImageRegionReverseIterator

ImageReverseConstIterator

ImageReverseIterator

ImageSliceConstIteratorWithIndex

ImageSliceIteratorWithIndex

NeighborhoodIterator

PathConstIterator

PathIterator

ShapedNeighborhoodIterator

SliceIterator

ImageConstIteratorWithIndex

Definition at line 115 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

Member Typedef Documentation

AccessorType

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::AccessorType = typename Superclass::AccessorType

Definition at line 133 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

FrequencyType

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::FrequencyType = typename ImageType::SpacingType

Definition at line 135 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

FrequencyValueType

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::FrequencyValueType = typename ImageType::SpacingValueType

Definition at line 136 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

ImageType

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::ImageType = typename Superclass::ImageType

Definition at line 128 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

IndexType

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::IndexType = typename Superclass::IndexType

Types inherited from the Superclass

Definition at line 124 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

InternalPixelType

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::InternalPixelType = typename Superclass::InternalPixelType

Definition at line 131 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

OffsetType

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::OffsetType = typename Superclass::OffsetType

Definition at line 126 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

PixelContainer

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::PixelContainer = typename Superclass::PixelContainer

Definition at line 129 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

PixelContainerPointer

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::PixelContainerPointer = typename Superclass::PixelContainerPointer

Definition at line 130 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

PixelType

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::PixelType = typename Superclass::PixelType

Definition at line 132 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

RegionType

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::RegionType = typename Superclass::RegionType

Definition at line 127 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

Self

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::Self = FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex

Standard class type alias.

Definition at line 120 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

SizeType

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::SizeType = typename Superclass::SizeType

Definition at line 125 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

Superclass

template<typename TImage>

using itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::Superclass = ImageRegionConstIteratorWithIndex<TImage>

Definition at line 121 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

Constructor & Destructor Documentation

FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex() [1/3]

template<typename TImage>

itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex ( )

inline

Default constructor. Needed since we provide a cast constructor.

Definition at line 138 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

References itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::Init().

FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex() [2/3]

template<typename TImage>

itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex ( const TImage *  ptr, const RegionType &  region  )

inline

Constructor establishes an iterator to walk a particular image and a particular region of that image.

Definition at line 146 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

References itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::Init().

FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex() [3/3]

template<typename TImage>

itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex ( const Superclass &  it )

inlineexplicit

Constructor that can be used to cast from an ImageIterator to an ImageRegionIteratorWithIndex. Many routines return an ImageIterator, but for a particular task, you may want an ImageRegionIteratorWithIndex. Rather than provide overloaded APIs that return different types of Iterators, itk returns ImageIterators and uses constructors to cast from an ImageIterator to a ImageRegionIteratorWithIndex.

Definition at line 158 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

References itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::Init().

Member Function Documentation

ActualXDimensionIsOddOff()

template<typename TImage>

virtual void itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::ActualXDimensionIsOddOff ( )

virtual

Note that this method is independent of the region in the constructor. It takes into account the ImageInformation of the Image in the frequency domain. This iterator is for the frequency layout that results from applying a FFT and then ShiftFFT to center the zero frequency component. If your image has a different layout, use other frequency iterator. The default ImageInformation is: Origin = {{0}}, Spacing = {{1}}. In this case the frequency values will be in the range: [-1/2, 1/2] Hz Or [-pi, pi] rad/s To modify those ranges: a) Avoid modifying the origin. The origin index always corresponds to zero frequency after a FFT. The range should be always centered around zero. b) The spacing control the range of frequencies (always around zero). If the spacing is = {{0.5}} we get a frequency range of [-1/4, 1/4] or [-pi/2, pi/2].

ActualXDimensionIsOddOn()

template<typename TImage>

virtual void itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::ActualXDimensionIsOddOn ( )

virtual

Note that this method is independent of the region in the constructor. It takes into account the ImageInformation of the Image in the frequency domain. This iterator is for the frequency layout that results from applying a FFT and then ShiftFFT to center the zero frequency component. If your image has a different layout, use other frequency iterator. The default ImageInformation is: Origin = {{0}}, Spacing = {{1}}. In this case the frequency values will be in the range: [-1/2, 1/2] Hz Or [-pi, pi] rad/s To modify those ranges: a) Avoid modifying the origin. The origin index always corresponds to zero frequency after a FFT. The range should be always centered around zero. b) The spacing control the range of frequencies (always around zero). If the spacing is = {{0.5}} we get a frequency range of [-1/4, 1/4] or [-pi/2, pi/2].

GetActualXDimensionIsOdd()

template<typename TImage>

virtual bool itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetActualXDimensionIsOdd ( )

virtual

Note that this method is independent of the region in the constructor. It takes into account the ImageInformation of the Image in the frequency domain. This iterator is for the frequency layout that results from applying a FFT and then ShiftFFT to center the zero frequency component. If your image has a different layout, use other frequency iterator. The default ImageInformation is: Origin = {{0}}, Spacing = {{1}}. In this case the frequency values will be in the range: [-1/2, 1/2] Hz Or [-pi, pi] rad/s To modify those ranges: a) Avoid modifying the origin. The origin index always corresponds to zero frequency after a FFT. The range should be always centered around zero. b) The spacing control the range of frequencies (always around zero). If the spacing is = {{0.5}} we get a frequency range of [-1/4, 1/4] or [-pi/2, pi/2].

GetFrequency()

template<typename TImage>

FrequencyType itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequency ( ) const

inline

Note that this method is independent of the region in the constructor. It takes into account the ImageInformation of the Image in the frequency domain. This iterator is for the frequency layout that results from applying a FFT and then ShiftFFT to center the zero frequency component. If your image has a different layout, use other frequency iterator. The default ImageInformation is: Origin = {{0}}, Spacing = {{1}}. In this case the frequency values will be in the range: [-1/2, 1/2] Hz Or [-pi, pi] rad/s To modify those ranges: a) Avoid modifying the origin. The origin index always corresponds to zero frequency after a FFT. The range should be always centered around zero. b) The spacing control the range of frequencies (always around zero). If the spacing is = {{0.5}} we get a frequency range of [-1/4, 1/4] or [-pi/2, pi/2].

Definition at line 193 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

References itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequencyBin(), itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::m_FrequencyOrigin, and itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::m_FrequencySpacing.

Referenced by itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequencyModuloSquare().

GetFrequencyBin()

template<typename TImage>

IndexType itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequencyBin ( ) const

inline

Definition at line 170 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

References itk::ImageConstIteratorWithIndex< TImage >::m_PositionIndex, and itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::m_ZeroFrequencyIndex.

Referenced by itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequency().

GetFrequencyModuloSquare()

template<typename TImage>

FrequencyValueType itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequencyModuloSquare ( ) const

inline

Note that this method is independent of the region in the constructor. It takes into account the ImageInformation of the Image in the frequency domain. This iterator is for the frequency layout that results from applying a FFT and then ShiftFFT to center the zero frequency component. If your image has a different layout, use other frequency iterator. The default ImageInformation is: Origin = {{0}}, Spacing = {{1}}. In this case the frequency values will be in the range: [-1/2, 1/2] Hz Or [-pi, pi] rad/s To modify those ranges: a) Avoid modifying the origin. The origin index always corresponds to zero frequency after a FFT. The range should be always centered around zero. b) The spacing control the range of frequencies (always around zero). If the spacing is = {{0.5}} we get a frequency range of [-1/4, 1/4] or [-pi/2, pi/2].

Definition at line 207 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

References itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequency().

GetFrequencyOrigin()

template<typename TImage>

virtual const FrequencyType& itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequencyOrigin ( ) const

virtual

Origin of frequencies is zero for FFT output.

GetFrequencySpacing()

template<typename TImage>

virtual const FrequencyType& itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequencySpacing ( ) const

virtual

This is the pixel width, or the bin size of the frequency in physical or world coordinates. SamplingFrequency = 1.0 / SpatialImageSpacing FrequencySpacing = SamplingFrequency / ImageSize FrequencySpacing = 1.0 / (SpatialImageSpacing * ImageSize) FrequencySpacing is computed at construction from the spacing of the input image, and cannot be modified.

GetZeroFrequencyIndex()

template<typename TImage>

virtual const IndexType& itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetZeroFrequencyIndex ( ) const

virtual

Index with the zero frequency value. By default: ZeroFrequencyIndex = floor(sizeImage / 2); This is: N/2 if N even, (N - 1)/2 if N odd.

Init()

template<typename TImage>

void itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::Init ( )

inlineprivate

Calculate m_ZeroFrequencyIndex, and frequency spacing/origin. Called by constructors.

Definition at line 253 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

References itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::m_FrequencyOrigin, itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::m_FrequencySpacing, itk::ImageConstIteratorWithIndex< TImage >::m_Image, and itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::m_ZeroFrequencyIndex.

Referenced by itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex().

SetActualXDimensionIsOdd()

template<typename TImage>

void itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::SetActualXDimensionIsOdd ( bool  value )

inline

Does nothing. This member only affects HalfHermitianFrequencyIterator. Provided for homogeneous interface between iterators.

Definition at line 241 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

References itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::m_ActualXDimensionIsOdd.

Member Data Documentation

m_ActualXDimensionIsOdd

template<typename TImage>

bool itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::m_ActualXDimensionIsOdd

private

Note that this method is independent of the region in the constructor. It takes into account the ImageInformation of the Image in the frequency domain. This iterator is for the frequency layout that results from applying a FFT and then ShiftFFT to center the zero frequency component. If your image has a different layout, use other frequency iterator. The default ImageInformation is: Origin = {{0}}, Spacing = {{1}}. In this case the frequency values will be in the range: [-1/2, 1/2] Hz Or [-pi, pi] rad/s To modify those ranges: a) Avoid modifying the origin. The origin index always corresponds to zero frequency after a FFT. The range should be always centered around zero. b) The spacing control the range of frequencies (always around zero). If the spacing is = {{0.5}} we get a frequency range of [-1/4, 1/4] or [-pi/2, pi/2].

Definition at line 274 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

Referenced by itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::SetActualXDimensionIsOdd().

m_FrequencyOrigin

template<typename TImage>

FrequencyType itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::m_FrequencyOrigin

private

Note that this method is independent of the region in the constructor. It takes into account the ImageInformation of the Image in the frequency domain. This iterator is for the frequency layout that results from applying a FFT and then ShiftFFT to center the zero frequency component. If your image has a different layout, use other frequency iterator. The default ImageInformation is: Origin = {{0}}, Spacing = {{1}}. In this case the frequency values will be in the range: [-1/2, 1/2] Hz Or [-pi, pi] rad/s To modify those ranges: a) Avoid modifying the origin. The origin index always corresponds to zero frequency after a FFT. The range should be always centered around zero. b) The spacing control the range of frequencies (always around zero). If the spacing is = {{0.5}} we get a frequency range of [-1/4, 1/4] or [-pi/2, pi/2].

Definition at line 272 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

Referenced by itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequency(), and itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::Init().

m_FrequencySpacing

template<typename TImage>

FrequencyType itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::m_FrequencySpacing

private

Note that this method is independent of the region in the constructor. It takes into account the ImageInformation of the Image in the frequency domain. This iterator is for the frequency layout that results from applying a FFT and then ShiftFFT to center the zero frequency component. If your image has a different layout, use other frequency iterator. The default ImageInformation is: Origin = {{0}}, Spacing = {{1}}. In this case the frequency values will be in the range: [-1/2, 1/2] Hz Or [-pi, pi] rad/s To modify those ranges: a) Avoid modifying the origin. The origin index always corresponds to zero frequency after a FFT. The range should be always centered around zero. b) The spacing control the range of frequencies (always around zero). If the spacing is = {{0.5}} we get a frequency range of [-1/4, 1/4] or [-pi/2, pi/2].

Definition at line 273 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

Referenced by itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequency(), and itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::Init().

m_ZeroFrequencyIndex

template<typename TImage>

IndexType itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::m_ZeroFrequencyIndex

private

Note that this method is independent of the region in the constructor. It takes into account the ImageInformation of the Image in the frequency domain. This iterator is for the frequency layout that results from applying a FFT and then ShiftFFT to center the zero frequency component. If your image has a different layout, use other frequency iterator. The default ImageInformation is: Origin = {{0}}, Spacing = {{1}}. In this case the frequency values will be in the range: [-1/2, 1/2] Hz Or [-pi, pi] rad/s To modify those ranges: a) Avoid modifying the origin. The origin index always corresponds to zero frequency after a FFT. The range should be always centered around zero. b) The spacing control the range of frequencies (always around zero). If the spacing is = {{0.5}} we get a frequency range of [-1/4, 1/4] or [-pi/2, pi/2].

Definition at line 271 of file itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h.

Referenced by itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::GetFrequencyBin(), and itk::FrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex< TImage >::Init().

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

• itkFrequencyShiftedFFTLayoutImageRegionConstIteratorWithIndex.h