vtkNIFTIWriter Class Reference

Write NIfTI-1 and NIfTI-2 medical image files. More...

#include <vtkNIFTIWriter.h>

Inheritance diagram for vtkNIFTIWriter:

Collaboration diagram for vtkNIFTIWriter:

Public Types
enum	EndianEnum { BigEndian = 0 , LittleEndian = 1 }
	Endianness of output file.
typedef vtkImageWriter	Superclass
Public Types inherited from vtkImageWriter
typedef vtkImageAlgorithm	Superclass
Public Types inherited from vtkImageAlgorithm
typedef vtkAlgorithm	Superclass
Public Types inherited from vtkAlgorithm
enum	DesiredOutputPrecision { SINGLE_PRECISION , DOUBLE_PRECISION , DEFAULT_PRECISION }
typedef vtkObject	Superclass

Public Member Functions
virtual vtkTypeBool	IsA (const char *type)
vtkNIFTIWriter *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) VTK_DICOM_OVERRIDE
	Print information about this object.
virtual void	SetNIFTIVersion (int)
	Set the version number for the NIfTI file format to use. More...
virtual int	GetNIFTIVersion ()
virtual void	SetDescription (const char *)
	Set a short description (max 80 chars) of how the file was produced.
virtual char *	GetDescription ()
virtual int	GetTimeDimension ()
	Set the time dimension to use in the NIFTI file (or zero if none). More...
virtual void	SetTimeDimension (int)
virtual double	GetTimeSpacing ()
virtual void	SetTimeSpacing (double)
virtual void	SetRescaleSlope (double)
	Set the slope and intercept for calibrating the scalar values. More...
virtual double	GetRescaleSlope ()
virtual void	SetRescaleIntercept (double)
virtual double	GetRescaleIntercept ()
virtual bool	GetPlanarRGB ()
	Write planar RGB (separate R, G, and B planes), rather than packed RGB. More...
virtual void	SetPlanarRGB (bool)
virtual void	PlanarRGBOn ()
virtual void	PlanarRGBOff ()
virtual void	SetQFac (double)
	The QFac sets the ordering of the slices in the NIFTI file. More...
virtual double	GetQFac ()
void	SetQFormMatrix (vtkMatrix4x4 *)
	Set the "qform" orientation and offset for the image data. More...
vtkMatrix4x4 *	GetQFormMatrix ()
void	SetSFormMatrix (vtkMatrix4x4 *)
	Set a matrix for the "sform" transformation stored in the file. More...
vtkMatrix4x4 *	GetSFormMatrix ()
void	SetNIFTIHeader (vtkNIFTIHeader *hdr)
	Set the NIFTI header information to use when writing the file. More...
vtkNIFTIHeader *	GetNIFTIHeader ()
virtual void	SetDataByteOrder (EndianEnum)
	Set the byte order for the files (default: little endian). More...
void	SetDataByteOrderToBigEndian ()
void	SetDataByteOrderToLittleEndian ()
virtual EndianEnum	GetDataByteOrder ()
Public Member Functions inherited from vtkImageWriter
vtkImageWriter *	NewInstance () const
virtual void	SetFileName (const char *)
virtual char *	GetFileName ()
virtual void	SetFilePrefix (const char *)
virtual char *	GetFilePrefix ()
virtual void	SetFilePattern (const char *)
virtual char *	GetFilePattern ()
virtual void	SetFileDimensionality (int)
virtual int	GetFileDimensionality ()
vtkImageData *	GetInput ()
virtual void	Write ()
void	DeleteFiles ()
Public Member Functions inherited from vtkImageAlgorithm
vtkImageAlgorithm *	NewInstance () const
vtkImageData *	GetOutput ()
vtkImageData *	GetOutput (int)
virtual void	SetOutput (vtkDataObject *d)
int	ProcessRequest (vtkInformation *, vtkInformationVector **, vtkInformationVector *) VTK_OVERRIDE
void	SetInputData (vtkDataObject *)
void	SetInputData (int, vtkDataObject *)
vtkDataObject *	GetInput (int port)
vtkDataObject *	GetInput ()
vtkImageData *	GetImageDataInput (int port)
virtual void	AddInputData (vtkDataObject *)
virtual void	AddInputData (int, vtkDataObject *)
Public Member Functions inherited from vtkAlgorithm
vtkAlgorithm *	NewInstance () const
int	HasExecutive ()
vtkExecutive *	GetExecutive ()
virtual void	SetExecutive (vtkExecutive *executive)
int	ProcessRequest (vtkInformation *request, vtkCollection *inInfo, vtkInformationVector *outInfo)
virtual int	ComputePipelineMTime (vtkInformation *request, vtkInformationVector **inInfoVec, vtkInformationVector *outInfoVec, int requestFromOutputPort, vtkMTimeType *mtime)
virtual int	ModifyRequest (vtkInformation *request, int when)
vtkInformation *	GetInputPortInformation (int port)
vtkInformation *	GetOutputPortInformation (int port)
virtual vtkInformation *	GetInformation ()
virtual void	SetInformation (vtkInformation *)
int	GetNumberOfInputPorts ()
int	GetNumberOfOutputPorts ()
void	Register (vtkObjectBase *o) VTK_OVERRIDE
void	UnRegister (vtkObjectBase *o) VTK_OVERRIDE
virtual void	SetAbortExecute (int)
virtual int	GetAbortExecute ()
virtual void	AbortExecuteOn ()
virtual void	AbortExecuteOff ()
virtual void	SetProgress (double)
virtual double	GetProgress ()
void	UpdateProgress (double amount)
void	SetProgressText (const char *ptext)
virtual char *	GetProgressText ()
virtual unsigned long	GetErrorCode ()
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name)
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType)
virtual void	SetInputArrayToProcess (int idx, vtkInformation *info)
virtual void	SetInputArrayToProcess (int idx, int port, int connection, const char *fieldAssociation, const char *attributeTypeorName)
vtkInformation *	GetInputArrayInformation (int idx)
void	RemoveAllInputs ()
vtkDataObject *	GetOutputDataObject (int port)
vtkDataObject *	GetInputDataObject (int port, int connection)
virtual void	SetInputConnection (int port, vtkAlgorithmOutput *input)
virtual void	SetInputConnection (vtkAlgorithmOutput *input)
virtual void	AddInputConnection (int port, vtkAlgorithmOutput *input)
virtual void	AddInputConnection (vtkAlgorithmOutput *input)
virtual void	RemoveInputConnection (int port, vtkAlgorithmOutput *input)
virtual void	RemoveInputConnection (int port, int idx)
virtual void	RemoveAllInputConnections (int port)
virtual void	SetInputDataObject (int port, vtkDataObject *data)
virtual void	SetInputDataObject (vtkDataObject *data)
virtual void	AddInputDataObject (int port, vtkDataObject *data)
virtual void	AddInputDataObject (vtkDataObject *data)
vtkAlgorithmOutput *	GetOutputPort (int index)
vtkAlgorithmOutput *	GetOutputPort ()
int	GetNumberOfInputConnections (int port)
int	GetTotalNumberOfInputConnections ()
vtkAlgorithmOutput *	GetInputConnection (int port, int index)
vtkAlgorithm *	GetInputAlgorithm (int port, int index, int &algPort)
vtkAlgorithm *	GetInputAlgorithm (int port, int index)
vtkAlgorithm *	GetInputAlgorithm ()
vtkExecutive *	GetInputExecutive (int port, int index)
vtkExecutive *	GetInputExecutive ()
vtkInformation *	GetInputInformation (int port, int index)
vtkInformation *	GetInputInformation ()
vtkInformation *	GetOutputInformation (int port)
virtual void	Update (int port)
virtual void	Update ()
virtual int	Update (int port, vtkInformationVector *requests)
virtual int	Update (vtkInformation *requests)
virtual int	UpdatePiece (int piece, int numPieces, int ghostLevels, const int extents[6]=0)
virtual int	UpdateExtent (const int extents[6])
virtual int	UpdateTimeStep (double time, int piece=-1, int numPieces=1, int ghostLevels=0, const int extents[6]=0)
virtual void	UpdateInformation ()
virtual void	UpdateDataObject ()
virtual void	PropagateUpdateExtent ()
virtual void	UpdateWholeExtent ()
void	ConvertTotalInputToPortConnection (int ind, int &port, int &conn)
virtual void	SetReleaseDataFlag (int)
virtual int	GetReleaseDataFlag ()
void	ReleaseDataFlagOn ()
void	ReleaseDataFlagOff ()
int	UpdateExtentIsEmpty (vtkInformation *pinfo, vtkDataObject *output)
int	UpdateExtentIsEmpty (vtkInformation *pinfo, int extentType)
int	SetUpdateExtentToWholeExtent (int port)
int	SetUpdateExtentToWholeExtent ()
void	SetUpdateExtent (int port, int piece, int numPieces, int ghostLevel)
void	SetUpdateExtent (int piece, int numPieces, int ghostLevel)
void	SetUpdateExtent (int port, int extent[6])
void	SetUpdateExtent (int extent[6])
int *	GetUpdateExtent ()
int *	GetUpdateExtent (int port)
void	GetUpdateExtent (int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
void	GetUpdateExtent (int port, int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
void	GetUpdateExtent (int extent[6])
void	GetUpdateExtent (int port, int extent[6])
int	GetUpdatePiece ()
int	GetUpdatePiece (int port)
int	GetUpdateNumberOfPieces ()
int	GetUpdateNumberOfPieces (int port)
int	GetUpdateGhostLevel ()
int	GetUpdateGhostLevel (int port)
void	SetProgressObserver (vtkProgressObserver *)
virtual vtkProgressObserver *	GetProgressObserver ()
Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)
virtual void	DebugOn ()
virtual void	DebugOff ()
bool	GetDebug ()
void	SetDebug (bool debugFlag)
virtual void	Modified ()
virtual vtkMTimeType	GetMTime ()
void	PrintSelf (ostream &os, vtkIndent indent) VTK_OVERRIDE
unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
unsigned long	AddObserver (const char *event, vtkCommand *, float priority=0.0f)
vtkCommand *	GetCommand (unsigned long tag)
void	RemoveObserver (vtkCommand *)
void	RemoveObservers (unsigned long event, vtkCommand *)
void	RemoveObservers (const char *event, vtkCommand *)
int	HasObserver (unsigned long event, vtkCommand *)
int	HasObserver (const char *event, vtkCommand *)
void	RemoveObserver (unsigned long tag)
void	RemoveObservers (unsigned long event)
void	RemoveObservers (const char *event)
void	RemoveAllObservers ()
int	HasObserver (unsigned long event)
int	HasObserver (const char *event)
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
int	InvokeEvent (unsigned long event, void *callData)
int	InvokeEvent (const char *event, void *callData)
int	InvokeEvent (unsigned long event)
int	InvokeEvent (const char *event)
Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
virtual void	Delete ()
virtual void	FastDelete ()
void	InitializeObjectBase ()
void	Print (ostream &os)
virtual void	PrintHeader (ostream &os, vtkIndent indent)
virtual void	PrintTrailer (ostream &os, vtkIndent indent)
int	GetReferenceCount ()
void	SetReferenceCount (int)
void	PrintRevisions (ostream &)

Static Public Member Functions
static vtkNIFTIWriter *	New ()
	Static method for construction.
static vtkTypeBool	IsTypeOf (const char *type)
static vtkNIFTIWriter *	SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkImageWriter
static vtkImageWriter *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkImageWriter *	SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkImageAlgorithm
static vtkTypeBool	IsTypeOf (const char *type)
static vtkImageAlgorithm *	SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkAlgorithm
static vtkAlgorithm *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkAlgorithm *	SafeDownCast (vtkObjectBase *o)
static vtkInformationIntegerKey *	INPUT_IS_OPTIONAL ()
static vtkInformationIntegerKey *	INPUT_IS_REPEATABLE ()
static vtkInformationInformationVectorKey *	INPUT_REQUIRED_FIELDS ()
static vtkInformationStringVectorKey *	INPUT_REQUIRED_DATA_TYPE ()
static vtkInformationInformationVectorKey *	INPUT_ARRAYS_TO_PROCESS ()
static vtkInformationIntegerKey *	INPUT_PORT ()
static vtkInformationIntegerKey *	INPUT_CONNECTION ()
static vtkInformationIntegerKey *	CAN_PRODUCE_SUB_EXTENT ()
static vtkInformationIntegerKey *	CAN_HANDLE_PIECE_REQUEST ()
static void	SetDefaultExecutivePrototype (vtkExecutive *proto)
Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
static void	BreakOnError ()
static void	SetGlobalWarningDisplay (int val)
static void	GlobalWarningDisplayOn ()
static void	GlobalWarningDisplayOff ()
static int	GetGlobalWarningDisplay ()
Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
static vtkObjectBase *	New ()

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
int	GenerateHeader (vtkInformation *info, bool singleFile)
	Generate the header information for the file.
int	RequestData (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector) VTK_DICOM_OVERRIDE
	The main execution method, which writes the file.
Protected Member Functions inherited from vtkImageWriter
virtual void	RecursiveWrite (int dim, vtkImageData *region, vtkInformation *inInfo, ofstream *file)
virtual void	RecursiveWrite (int dim, vtkImageData *cache, vtkImageData *data, vtkInformation *inInfo, ofstream *file)
virtual void	WriteFile (ofstream *file, vtkImageData *data, int extent[6], int wExtent[6])
virtual void	WriteFileHeader (ofstream *, vtkImageData *, int[6])
virtual void	WriteFileTrailer (ofstream *, vtkImageData *)
Protected Member Functions inherited from vtkImageAlgorithm
virtual int	RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
virtual int	RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
virtual void	CopyInputArrayAttributesToOutput (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
virtual void	ExecuteDataWithInformation (vtkDataObject *output, vtkInformation *outInfo)
virtual void	ExecuteData (vtkDataObject *output)
virtual void	Execute ()
virtual void	AllocateOutputData (vtkImageData *out, vtkInformation *outInfo, int *uExtent)
virtual vtkImageData *	AllocateOutputData (vtkDataObject *out, vtkInformation *outInfo)
virtual void	CopyAttributeData (vtkImageData *in, vtkImageData *out, vtkInformationVector **inputVector)
int	FillOutputPortInformation (int port, vtkInformation *info) VTK_OVERRIDE
int	FillInputPortInformation (int port, vtkInformation *info) VTK_OVERRIDE
Protected Member Functions inherited from vtkAlgorithm
virtual void	SetNumberOfInputPorts (int n)
virtual void	SetNumberOfOutputPorts (int n)
int	InputPortIndexInRange (int index, const char *action)
int	OutputPortIndexInRange (int index, const char *action)
int	GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)
int	GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector)
int	GetInputArrayAssociation (int idx, vtkDataObject *input)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input)
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input, int &association)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input)
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)
vtkInformation *	GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)
virtual vtkExecutive *	CreateDefaultExecutive ()
virtual void	SetErrorCode (unsigned long)
void	ReportReferences (vtkGarbageCollector *) VTK_OVERRIDE
virtual void	SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input)
virtual void	SetNumberOfInputConnections (int port, int n)
void	SetInputDataInternal (int port, vtkDataObject *input)
void	AddInputDataInternal (int port, vtkDataObject *input)
Protected Member Functions inherited from vtkObject
void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) VTK_OVERRIDE
void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) VTK_OVERRIDE
void	InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=NULL)
void	InternalReleaseFocus ()
Protected Member Functions inherited from vtkObjectBase
virtual void	CollectRevisions (ostream &)
	vtkObjectBase (const vtkObjectBase &)
void	operator= (const vtkObjectBase &)

Static Protected Member Functions
static char *	ReplaceExtension (const char *fname, const char *ext1, const char *ext2)
	Make a new filename by replacing extension "ext1" with "ext2". More...
Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKey *	PORT_REQUIREMENTS_FILLED ()

Protected Attributes
int	TimeDimension
	Time dimension to use in the file.
double	TimeSpacing
double	RescaleIntercept
	Information for rescaling data to quantitative units.
double	RescaleSlope
double	QFac
	Set to -1 when VTK slice order is opposite to NIFTI slice order.
vtkMatrix4x4 *	QFormMatrix
	The orientation matrices for the NIFTI file.
vtkMatrix4x4 *	SFormMatrix
char *	Description
	A description of how the file was produced.
vtkNIFTIHeader *	NIFTIHeader
	The header information.
vtkNIFTIHeader *	OwnHeader
int	NIFTIVersion
bool	PlanarRGB
	Use planar RGB instead of the default (packed).
EndianEnum	DataByteOrder
	Whether the file should be little endian.
Protected Attributes inherited from vtkImageWriter
int	FileDimensionality
char *	FilePrefix
char *	FilePattern
char *	FileName
int	FileNumber
int	FileLowerLeft
char *	InternalFileName
int	MinimumFileNumber
int	MaximumFileNumber
int	FilesDeleted
Protected Attributes inherited from vtkAlgorithm
vtkInformation *	Information
unsigned long	ErrorCode
double	Progress
char *	ProgressText
vtkProgressObserver *	ProgressObserver
Protected Attributes inherited from vtkObject
bool	Debug
vtkTimeStamp	MTime
vtkSubjectHelper *	SubjectHelper
Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount
vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Public Attributes inherited from vtkAlgorithm
int	AbortExecute
Static Protected Attributes inherited from vtkAlgorithm
static vtkExecutive *	DefaultExecutivePrototype

Detailed Description

Write NIfTI-1 and NIfTI-2 medical image files.

This class writes NIFTI files, either in .nii format or as separate .img and .hdr files. If told to write a file that ends in ".gz", then the writer will automatically compress the file with zlib. Images of type unsigned char that have 3 or 4 scalar components will automatically be written as RGB or RGBA respectively. Images of type float or double that have 2 components will automatically be written as complex values.

This class was contributed to VTK by the Calgary Image Processing and Analysis Centre (CIPAC).

See also

vtkNIFTIReader

Member Function Documentation

GetPlanarRGB()

virtual bool vtkNIFTIWriter::GetPlanarRGB ( )

virtual

Write planar RGB (separate R, G, and B planes), rather than packed RGB.

Use this option with extreme caution: the NIFTI standard requires RGB pixels to be packed. The Analyze format, however, was used to store both planar RGB and packed RGB depending on the software, without any indication in the header about which convention was being used.

GetTimeDimension()

virtual int vtkNIFTIWriter::GetTimeDimension ( )

virtual

Set the time dimension to use in the NIFTI file (or zero if none).

The number of components of the input data must be divisible by the time dimension if the time dimension is not set to zero. The vector dimension will be set to the number of components divided by the time dimension.

IsA()

virtual vtkTypeBool vtkNIFTIWriter::IsA ( const char *  name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkImageWriter.

ReplaceExtension()

static char* vtkNIFTIWriter::ReplaceExtension ( const char *  fname, const char *  ext1, const char *  ext2  )

staticprotected

Make a new filename by replacing extension "ext1" with "ext2".

The extensions must include a period, must be three characters long, and must be lower case. A new string is returned that must be deleted by the caller.

SetDataByteOrder()

virtual void vtkNIFTIWriter::SetDataByteOrder ( EndianEnum  )

virtual

Set the byte order for the files (default: little endian).

These methods allow the byte order of the NIFTI file to be set. Originally, Analyze files (and NIFTI, by extension) were meant to be written using the native endianness of the system. However, with the overwhelming preference for little-endian architectures on image processing workstations, defaulting to little endian files (even on big-endian systems) provides better compatibility.

SetNIFTIHeader()

void vtkNIFTIWriter::SetNIFTIHeader

(

vtkNIFTIHeader *

hdr

)

Set the NIFTI header information to use when writing the file.

The data dimensions and pixdim from the supplied header will be ignored. Likewise, the QForm and SForm information in the supplied header will be ignored if you have called SetQFormMatrix() or SetSFormMatrix() to provide the orientation information for the file.

SetNIFTIVersion()

virtual void vtkNIFTIWriter::SetNIFTIVersion ( int  )

virtual

Set the version number for the NIfTI file format to use.

This can be 1, 2, or 0 (the default). If set to zero, then it will save as NIfTI version 1 unless SetNIFTIHeader() provided header information from a NIfTI version 2 file.

SetQFac()

virtual void vtkNIFTIWriter::SetQFac ( double  )

virtual

The QFac sets the ordering of the slices in the NIFTI file.

If QFac is -1, then the slice ordering in the file will be reversed as compared to VTK. Use with caution.

SetQFormMatrix()

void vtkNIFTIWriter::SetQFormMatrix

(

vtkMatrix4x4 *

)

Set the "qform" orientation and offset for the image data.

The 3x3 portion of the matrix must be orthonormal and have a positive determinant, it will be used to compute the quaternion. The last column of the matrix will be used for the offset. In the NIFTI header, the qform_code will be set to 1.

SetRescaleSlope()

virtual void vtkNIFTIWriter::SetRescaleSlope ( double  )

virtual

Set the slope and intercept for calibrating the scalar values.

Other programs that read the NIFTI file can use the equation v = u*RescaleSlope + RescaleIntercept to rescale the data to real values. If both the slope and the intercept are zero, then the SclSlope and SclIntercept in the header info provided via SetNIFTIHeader() are used instead.

SetSFormMatrix()

void vtkNIFTIWriter::SetSFormMatrix

(

vtkMatrix4x4 *

)

Set a matrix for the "sform" transformation stored in the file.

Unlike the qform matrix, the sform matrix can contain scaling information. Before being stored in the NIFTI header, the first three columns of the matrix will be multiplied by the voxel spacing. In the NIFTI header, the sform_code will be set to 2.

---

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

• vtkNIFTIWriter.h