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vtkExtractVOI Class Reference

select piece (e.g., volume of interest) and/or subsample structured points dataset. More...

#include <vtkExtractVOI.h>

Inheritance diagram for vtkExtractVOI:

[legend]Collaboration diagram for vtkExtractVOI:

[legend]List of all members.

Public Methods
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
virtual void	SetVOI (int, int, int, int, int, int)
virtual void	SetVOI (int[6])
virtual int *	GetVOI ()
virtual void	GetVOI (int data[6])
virtual void	SetSampleRate (int, int, int)
virtual void	SetSampleRate (int[3])
virtual int *	GetSampleRate ()
virtual void	GetSampleRate (int data[3])
Static Public Methods
int	IsTypeOf (const char *type)
vtkExtractVOI *	SafeDownCast (vtkObject *o)
vtkExtractVOI *	New ()
Protected Methods
	vtkExtractVOI ()
	~vtkExtractVOI ()
	vtkExtractVOI (const vtkExtractVOI &)
void	operator= (const vtkExtractVOI &)
void	Execute ()
void	ExecuteInformation ()
Protected Attributes
int	VOI [6]
int	SampleRate [3]

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Detailed Description

select piece (e.g., volume of interest) and/or subsample structured points dataset.

Date:

2000/12/10 20:08:37

Revision:

1.24

vtkExtractVOI is a filter that selects a portion of an input structured points dataset, or subsamples an input dataset. (The selected portion of interested is referred to as the Volume Of Interest, or VOI.) The output of this filter is a structured points dataset. The filter treats input data of any topological dimension (i.e., point, line, image, or volume) and can generate output data of any topological dimension.

To use this filter set the VOI ivar which are i-j-k min/max indices that specify a rectangular region in the data. (Note that these are 0-offset.) You can also specify a sampling rate to subsample the data.

Typical applications of this filter are to extract a slice from a volume for image processing, subsampling large volumes to reduce data size, or extracting regions of a volume with interesting data.

See also:

vtkGeometryFilter vtkExtractGeometry vtkExtractGrid

Examples:

vtkExtractVOI (examples)

Definition at line 73 of file vtkExtractVOI.h.

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Constructor & Destructor Documentation

vtkExtractVOI::vtkExtractVOI (    )  [protected]

vtkExtractVOI::~vtkExtractVOI (    )  [inline, protected]

Definition at line 97 of file vtkExtractVOI.h.

vtkExtractVOI::vtkExtractVOI (  const vtkExtractVOI &    )  [inline, protected]

Definition at line 98 of file vtkExtractVOI.h.

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Member Function Documentation

virtual const char* vtkExtractVOI::GetClassName (    )  [virtual]

Return the class name as a string. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkStructuredPointsToStructuredPointsFilter.

int vtkExtractVOI::IsTypeOf (  const char *    type )  [static]

Return 1 if this class type 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 vtkStructuredPointsToStructuredPointsFilter.

virtual int vtkExtractVOI::IsA (  const char *    type )  [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 vtkStructuredPointsToStructuredPointsFilter.

vtkExtractVOI* vtkExtractVOI::SafeDownCast (  vtkObject *    o )  [static]

Will cast the supplied object to vtkObject* is this is a safe operation (i.e., a safe downcast); otherwise NULL is returned. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkStructuredPointsToStructuredPointsFilter.

void vtkExtractVOI::PrintSelf (  ostream &    os, vtkIndent    indent )  [virtual]

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes. Reimplemented from vtkSource.

vtkExtractVOI* vtkExtractVOI::New (    )  [static]

Construct object to extract all of the input data. Reimplemented from vtkStructuredPointsSource.

virtual void vtkExtractVOI::SetVOI (  int   , int   , int   , int   , int   , int    )  [virtual]

Specify i-j-k (min,max) pairs to extract. The resulting structured points dataset can be of any topological dimension (i.e., point, line, image, or volume).

virtual void vtkExtractVOI::SetVOI (  int   [6] )  [virtual]

virtual int* vtkExtractVOI::GetVOI (    )  [virtual]

virtual void vtkExtractVOI::GetVOI (  int    data[6] )  [virtual]

virtual void vtkExtractVOI::SetSampleRate (  int   , int   , int    )  [virtual]

Set the sampling rate in the i, j, and k directions. If the rate is > 1, then the resulting VOI will be subsampled representation of the input. For example, if the SampleRate=(2,2,2), every other point will be selected, resulting in a volume 1/8th the original size.

virtual void vtkExtractVOI::SetSampleRate (  int   [3] )  [virtual]

virtual int* vtkExtractVOI::GetSampleRate (    )  [virtual]

virtual void vtkExtractVOI::GetSampleRate (  int    data[3] )  [virtual]

void vtkExtractVOI::operator= (  const vtkExtractVOI &    )  [inline, protected]

Definition at line 99 of file vtkExtractVOI.h.

void vtkExtractVOI::Execute (    )  [protected, virtual]

Reimplemented from vtkSource.

void vtkExtractVOI::ExecuteInformation (    )  [protected, virtual]

Reimplemented from vtkStructuredPointsToStructuredPointsFilter.

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Member Data Documentation

int vtkExtractVOI::VOI[6] [protected]

Definition at line 104 of file vtkExtractVOI.h.

int vtkExtractVOI::SampleRate[3] [protected]

Definition at line 105 of file vtkExtractVOI.h.

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

• graphics/vtkExtractVOI.h

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