vtkImageMRIFFT Class Reference

#include <vtkImageMRIFFT.h>

Inheritance diagram for vtkImageMRIFFT:

[legend]Collaboration diagram for vtkImageMRIFFT:

[legend]List of all members.

---

Detailed Description

Inverse Fast Fourier Transform.

vtkImageMRIFFT implements the inverse fast Fourier transform. The input can have real or complex data in any components and data types, but the output is always complex doubles with real values in component0, and imaginary values in component1. The filter is fastest for images that have power of two sizes. The filter uses a butterfly fitlers for each prime factor of the dimension. This makes images with prime number dimensions (i.e. 17x17) much slower to compute. Multi dimensional (i.e volumes) FFT's are decomposed so that each axis executes in series. In most cases the IFFT will produce an image whose imaginary values are all zero's. In this case vtkImageExtractComponents can be used to remove this imaginary components leaving only the real image. This implementaion does not perform decimation for use in MRI image reconstruction.

See also:

vtkImageExtractComponents

Definition at line 58 of file vtkImageMRIFFT.h.

Public Member Functions
	vtkTypeRevisionMacro (vtkImageMRIFFT, vtkImageMRIFourierFilter)
virtual void	SetIFFT (int)
virtual int	GetIFFT ()
virtual void	IFFTOn ()
virtual void	IFFTOff ()
int	SplitExtent (int splitExt[6], int startExt[6], int num, int total)
Static Public Member Functions
static vtkImageMRIFFT *	New ()
Protected Member Functions
	vtkImageMRIFFT ()
	~vtkImageMRIFFT ()
virtual int	IterativeRequestInformation (vtkInformation *in, vtkInformation *out)
virtual int	IterativeRequestUpdateExtent (vtkInformation *in, vtkInformation *out)
void	ThreadedExecute (vtkImageData *inData, vtkImageData *outData, int outExt[6], int threadId)
Protected Attributes
int	IFFT

---

Constructor & Destructor Documentation

vtkImageMRIFFT::vtkImageMRIFFT

(

)

[protected]

vtkImageMRIFFT::~vtkImageMRIFFT

(

)

[inline, protected]

Definition at line 87 of file vtkImageMRIFFT.h.

---

Member Function Documentation

static vtkImageMRIFFT* vtkImageMRIFFT::New

(

)

[static]

Reimplemented from vtkAlgorithm.

vtkImageMRIFFT::vtkTypeRevisionMacro	(	vtkImageMRIFFT	,
		vtkImageMRIFourierFilter
	)

virtual void vtkImageMRIFFT::SetIFFT

(

int

)

[virtual]

Set/Get whether to perform Inverse Fourier Transform.

virtual int vtkImageMRIFFT::GetIFFT

(

)

[virtual]

Set/Get whether to perform Inverse Fourier Transform.

virtual void vtkImageMRIFFT::IFFTOn

(

)

[virtual]

Set/Get whether to perform Inverse Fourier Transform.

virtual void vtkImageMRIFFT::IFFTOff

(

)

[virtual]

Set/Get whether to perform Inverse Fourier Transform.

int vtkImageMRIFFT::SplitExtent	(	int	splitExt[6],
		int	startExt[6],
		int	num,
		int	total
	)			[virtual]

For streaming and threads. Splits output update extent into num pieces. This method needs to be called num times. Results must not overlap for consistent starting extent. Subclass can override this method. This method returns the number of pieces resulting from a successful split. This can be from 1 to "total". If 1 is returned, the extent cannot be split.

Reimplemented from vtkThreadedImageAlgorithm.

virtual int vtkImageMRIFFT::IterativeRequestInformation	(	vtkInformation *	in,
		vtkInformation *	out
	)			[protected, virtual]

Reimplemented from vtkImageIterateFilter.

virtual int vtkImageMRIFFT::IterativeRequestUpdateExtent	(	vtkInformation *	in,
		vtkInformation *	out
	)			[protected, virtual]

Reimplemented from vtkImageIterateFilter.

void vtkImageMRIFFT::ThreadedExecute	(	vtkImageData *	inData,
		vtkImageData *	outData,
		int	outExt[6],
		int	threadId
	)			[protected, virtual]

Reimplemented from vtkThreadedImageAlgorithm.

---

Member Data Documentation

int vtkImageMRIFFT::IFFT [protected]

Definition at line 87 of file vtkImageMRIFFT.h.

---

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

• dox/Imaging/vtkImageMRIFFT.h

---