LowResolutionImageAcquisition Class Reference

#include <LowResolutionImageAcquisition.h>

Inheritance diagram for LowResolutionImageAcquisition:

Collaboration diagram for LowResolutionImageAcquisition:

Public Types
typedef float	PrecisionType
Public Types inherited from ImageAcquisition
typedef float	PrecisionType

Public Member Functions
	LowResolutionImageAcquisition ()
virtual	~LowResolutionImageAcquisition ()
nifti_image *	SimulateImageAcquisition (nifti_image *imgInFullImgSpace, nifti_image *imgInAcquisitionSpace, unsigned int dynamicImageTimePoint)
void	CalculateAdjoint (nifti_image *imgInFullImgSpace, nifti_image *imgInAcquisitionSpace, unsigned int dynamicImageTimePoint)
nifti_image *	AllocateMinimumSizeImgInFullImgSpace (nifti_image *imgInFullImgSpace, nifti_image *imgInAcquisitionSpace, unsigned int dynamicImageTimePoint)
Public Member Functions inherited from ImageAcquisition
	ImageAcquisition ()
virtual	~ImageAcquisition ()
virtual nifti_image *	SimulateImageAcquisition (nifti_image *imgInFullImgSpace, nifti_image *imgInAcquisitionSpace, unsigned int dynamicImageTimePoint)=0
virtual void	CalculateAdjoint (nifti_image *imgInFullImgSpace, nifti_image *imgInAcquisitionSpace, unsigned int dynamicImageTimePoint)=0
virtual nifti_image *	AllocateMinimumSizeImgInFullImgSpace (nifti_image *imgInFullImgSpace, nifti_image *imgInAcquisitionSpace, unsigned int dynamicImageTimePoint)=0
virtual nifti_image *	GetImageAfterAdjoint ()
virtual nifti_image *	GetWeightsImageAfterAdjoint ()

Protected Member Functions
virtual void	AllocateImageAfterAdjoint ()
Protected Member Functions inherited from ImageAcquisition
virtual void	AllocateImageAfterAdjoint ()=0
virtual void	AllocateWeightsImageAfterAdjoint ()
virtual void	ClearImageAfterAdjoint ()
virtual void	ClearWeightsImageAfterAdjoint ()

Protected Attributes
const PrecisionType	lowResolutionThreshold
	Ratio between the high and low resolution image. Only if ratio is larger, low resolution acquisition will be simulated. More...
const PrecisionType	roundErrorThreshold
	Value used below which rounding can be savely done without loss of accuracy. More...
PrecisionType	paddingValue
	The padding value used in simulating the image acquisition. More...
Protected Attributes inherited from ImageAcquisition
nifti_image *	imageAfterAdjoint
nifti_image *	weightsImageAfterAdjoint
nifti_image *	curImageInAcquisitionSpace
	Current image in acquisition space. More...
nifti_image *	curImageInFullImgSpace
	Current image in full image space. More...
unsigned int	curDynamicImageTimePoint
	Current dynamic image time point. More...

Member Typedef Documentation

PrecisionType

typedef float LowResolutionImageAcquisition::PrecisionType

Constructor & Destructor Documentation

LowResolutionImageAcquisition()

LowResolutionImageAcquisition::LowResolutionImageAcquisition

(

)

Default constructor

~LowResolutionImageAcquisition()

LowResolutionImageAcquisition::~LowResolutionImageAcquisition ( )

virtual

Destructor

Member Function Documentation

AllocateImageAfterAdjoint()

void LowResolutionImageAcquisition::AllocateImageAfterAdjoint ( )

protectedvirtual

Implements ImageAcquisition.

AllocateMinimumSizeImgInFullImgSpace()

nifti_image * LowResolutionImageAcquisition::AllocateMinimumSizeImgInFullImgSpace ( nifti_image *  imgInFullImgSpace, nifti_image *  imgInAcquisitionSpace, unsigned int  dynamicImageTimePoint  )

virtual

Computes the minimum sized image in full image space for efficient warping in the objective function calculations. Only the geometric information of the images is used, the dynamic image time point is ignored here.

Parameters

imgInFullImgSpace	Pointer to nifti image holding the image in full image space.
imgInAcquisitionSpace	Pointer to the nifti image in acquisition space.
dynamicImageTimePoint	Not used in this method.

Implements ImageAcquisition.

CalculateAdjoint()

void LowResolutionImageAcquisition::CalculateAdjoint ( nifti_image *  imgInFullImgSpace, nifti_image *  imgInAcquisitionSpace, unsigned int  dynamicImageTimePoint  )

virtual

Backproject the low-resoution image into full image space.

Parameters

imgInFullImgSpace	Pointer to nifti image holding the image in full image space.
imgInAcquisitionSpace	Pointer to the nifti image in acquisition space.
dynamicImageTimePoint	Not used in this method.

Implements ImageAcquisition.

SimulateImageAcquisition()

nifti_image * LowResolutionImageAcquisition::SimulateImageAcquisition ( nifti_image *  imgInFullImgSpace, nifti_image *  imgInAcquisitionSpace, unsigned int  dynamicImageTimePoint  )

virtual

Implementation of the low-resolution image acquisition simulation. Calculates a low-resolution image using the information provided by the image in image space. The simulated image will be allocated and returned as a pointer. The image in acuqisition space will be used to determine the smoothing and downwampling.

Parameters

imgInFullImgSpace	Pointer to nifti image holding the image in full image space.
imgInAcquisitionSpace	Pointer to the nifti image in acquisition space.
dynamicImageTimePoint	The dynamic image time point in case time-dependent meta data needs to be used internally.

Returns

Pointer to the simulated dyanmic image. This image will be allocated by this function and is expected to be deleted after usaage using nifti_image_free() .

Implements ImageAcquisition.

Member Data Documentation

lowResolutionThreshold

const PrecisionType LowResolutionImageAcquisition::lowResolutionThreshold

protected

Ratio between the high and low resolution image. Only if ratio is larger, low resolution acquisition will be simulated.

paddingValue

PrecisionType LowResolutionImageAcquisition::paddingValue

protected

The padding value used in simulating the image acquisition.

roundErrorThreshold

const PrecisionType LowResolutionImageAcquisition::roundErrorThreshold

protected

Value used below which rounding can be savely done without loss of accuracy.

---

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

• motion-lib/LowResolutionImageAcquisition.h
• motion-lib/LowResolutionImageAcquisition.cpp