VTK
Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes
vtkVolume16Reader Class Reference

read 16 bit image files More...

#include <vtkVolume16Reader.h>

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List of all members.

Public Types

typedef vtkVolumeReader Superclass

Public Member Functions

virtual int IsA (const char *type)
vtkVolume16ReaderNewInstance () const
void PrintSelf (ostream &os, vtkIndent indent)
vtkImageDataGetImage (int ImageNumber)
virtual void SetDataDimensions (int, int)
void SetDataDimensions (int[2])
virtual intGetDataDimensions ()
virtual void GetDataDimensions (int data[2])
virtual void SetDataMask (unsigned short)
virtual unsigned short GetDataMask ()
virtual void SetHeaderSize (int)
virtual int GetHeaderSize ()
void SetDataByteOrderToBigEndian ()
void SetDataByteOrderToLittleEndian ()
int GetDataByteOrder ()
void SetDataByteOrder (int)
const char * GetDataByteOrderAsString ()
virtual void SetSwapBytes (int)
virtual int GetSwapBytes ()
virtual void SwapBytesOn ()
virtual void SwapBytesOff ()
virtual void SetTransform (vtkTransform *)
virtual vtkTransformGetTransform ()

Static Public Member Functions

static int IsTypeOf (const char *type)
static vtkVolume16ReaderSafeDownCast (vtkObjectBase *o)
static vtkVolume16ReaderNew ()

Protected Member Functions

virtual vtkObjectBaseNewInstanceInternal () const
 vtkVolume16Reader ()
 ~vtkVolume16Reader ()
virtual int RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
virtual int RequestInformation (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
void TransformSlice (unsigned short *slice, unsigned short *pixels, int k, int dimensions[3], int bounds[3])
void ComputeTransformedDimensions (int dimensions[3])
void ComputeTransformedBounds (int bounds[6])
void ComputeTransformedSpacing (double Spacing[3])
void ComputeTransformedOrigin (double origin[3])
void AdjustSpacingAndOrigin (int dimensions[3], double Spacing[3], double origin[3])
void ReadImage (int ImageNumber, vtkUnsignedShortArray *)
void ReadVolume (int FirstImage, int LastImage, vtkUnsignedShortArray *)
int Read16BitImage (FILE *fp, unsigned short *pixels, int xsize, int ysize, int skip, int swapBytes)

Protected Attributes

int DataDimensions [2]
unsigned short DataMask
int SwapBytes
int HeaderSize
vtkTransformTransform

Detailed Description

read 16 bit image files

vtkVolume16Reader is a source object that reads 16 bit image files.

Volume16Reader creates structured point datasets. The dimension of the dataset depends upon the number of files read. Reading a single file results in a 2D image, while reading more than one file results in a 3D volume.

File names are created using FilePattern and FilePrefix as follows: sprintf (filename, FilePattern, FilePrefix, number); where number is in the range ImageRange[0] to ImageRange[1]. If ImageRange[1] <= ImageRange[0], then slice number ImageRange[0] is read. Thus to read an image set ImageRange[0] = ImageRange[1] = slice number. The default behavior is to read a single file (i.e., image slice 1).

The DataMask instance variable is used to read data files with imbedded connectivity or segmentation information. For example, some data has the high order bit set to indicate connected surface. The DataMask allows you to select this data. Other important ivars include HeaderSize, which allows you to skip over initial info, and SwapBytes, which turns on/off byte swapping.

The Transform instance variable specifies a permutation transformation to map slice space into world space. vtkImageReader has replaced the functionality of this class and should be used instead.

See also:
vtkSliceCubes vtkMarchingCubes vtkImageReader
Examples:
vtkVolume16Reader (Examples)
Tests:
vtkVolume16Reader (Tests)

Definition at line 66 of file vtkVolume16Reader.h.


Member Typedef Documentation

Reimplemented from vtkVolumeReader.

Definition at line 69 of file vtkVolume16Reader.h.


Constructor & Destructor Documentation


Member Function Documentation

static int vtkVolume16Reader::IsTypeOf ( const char *  name) [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 vtkVolumeReader.

virtual int vtkVolume16Reader::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 vtkVolumeReader.

Reimplemented from vtkVolumeReader.

virtual vtkObjectBase* vtkVolume16Reader::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkVolumeReader.

Reimplemented from vtkVolumeReader.

void vtkVolume16Reader::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 vtkVolumeReader.

Construct object with NULL file prefix; file pattern "%s.%d"; image range set to (1,1); data origin (0,0,0); data spacing (1,1,1); no data mask; header size 0; and byte swapping turned off.

Reimplemented from vtkAlgorithm.

virtual void vtkVolume16Reader::SetDataDimensions ( int  ,
int   
) [virtual]

Specify the dimensions for the data.

Specify the dimensions for the data.

virtual int* vtkVolume16Reader::GetDataDimensions ( ) [virtual]

Specify the dimensions for the data.

virtual void vtkVolume16Reader::GetDataDimensions ( int  data[2]) [virtual]

Specify the dimensions for the data.

virtual void vtkVolume16Reader::SetDataMask ( unsigned  short) [virtual]

Specify a mask used to eliminate data in the data file (e.g., connectivity bits).

virtual unsigned short vtkVolume16Reader::GetDataMask ( ) [virtual]

Specify a mask used to eliminate data in the data file (e.g., connectivity bits).

virtual void vtkVolume16Reader::SetHeaderSize ( int  ) [virtual]

Specify the number of bytes to seek over at start of image.

virtual int vtkVolume16Reader::GetHeaderSize ( ) [virtual]

Specify the number of bytes to seek over at start of image.

These methods should be used instead of the SwapBytes methods. They indicate the byte ordering of the file you are trying to read in. These methods will then either swap or not swap the bytes depending on the byte ordering of the machine it is being run on. For example, reading in a BigEndian file on a BigEndian machine will result in no swapping. Trying to read the same file on a LittleEndian machine will result in swapping. As a quick note most UNIX machines are BigEndian while PC's and VAX tend to be LittleEndian. So if the file you are reading in was generated on a VAX or PC, SetDataByteOrderToLittleEndian otherwise SetDataByteOrderToBigEndian.

These methods should be used instead of the SwapBytes methods. They indicate the byte ordering of the file you are trying to read in. These methods will then either swap or not swap the bytes depending on the byte ordering of the machine it is being run on. For example, reading in a BigEndian file on a BigEndian machine will result in no swapping. Trying to read the same file on a LittleEndian machine will result in swapping. As a quick note most UNIX machines are BigEndian while PC's and VAX tend to be LittleEndian. So if the file you are reading in was generated on a VAX or PC, SetDataByteOrderToLittleEndian otherwise SetDataByteOrderToBigEndian.

These methods should be used instead of the SwapBytes methods. They indicate the byte ordering of the file you are trying to read in. These methods will then either swap or not swap the bytes depending on the byte ordering of the machine it is being run on. For example, reading in a BigEndian file on a BigEndian machine will result in no swapping. Trying to read the same file on a LittleEndian machine will result in swapping. As a quick note most UNIX machines are BigEndian while PC's and VAX tend to be LittleEndian. So if the file you are reading in was generated on a VAX or PC, SetDataByteOrderToLittleEndian otherwise SetDataByteOrderToBigEndian.

These methods should be used instead of the SwapBytes methods. They indicate the byte ordering of the file you are trying to read in. These methods will then either swap or not swap the bytes depending on the byte ordering of the machine it is being run on. For example, reading in a BigEndian file on a BigEndian machine will result in no swapping. Trying to read the same file on a LittleEndian machine will result in swapping. As a quick note most UNIX machines are BigEndian while PC's and VAX tend to be LittleEndian. So if the file you are reading in was generated on a VAX or PC, SetDataByteOrderToLittleEndian otherwise SetDataByteOrderToBigEndian.

These methods should be used instead of the SwapBytes methods. They indicate the byte ordering of the file you are trying to read in. These methods will then either swap or not swap the bytes depending on the byte ordering of the machine it is being run on. For example, reading in a BigEndian file on a BigEndian machine will result in no swapping. Trying to read the same file on a LittleEndian machine will result in swapping. As a quick note most UNIX machines are BigEndian while PC's and VAX tend to be LittleEndian. So if the file you are reading in was generated on a VAX or PC, SetDataByteOrderToLittleEndian otherwise SetDataByteOrderToBigEndian.

virtual void vtkVolume16Reader::SetSwapBytes ( int  ) [virtual]

Turn on/off byte swapping.

virtual int vtkVolume16Reader::GetSwapBytes ( ) [virtual]

Turn on/off byte swapping.

virtual void vtkVolume16Reader::SwapBytesOn ( ) [virtual]

Turn on/off byte swapping.

virtual void vtkVolume16Reader::SwapBytesOff ( ) [virtual]

Turn on/off byte swapping.

virtual void vtkVolume16Reader::SetTransform ( vtkTransform ) [virtual]

Set/Get transformation matrix to transform the data from slice space into world space. This matrix must be a permutation matrix. To qualify, the sums of the rows must be + or - 1.

Set/Get transformation matrix to transform the data from slice space into world space. This matrix must be a permutation matrix. To qualify, the sums of the rows must be + or - 1.

vtkImageData* vtkVolume16Reader::GetImage ( int  ImageNumber) [virtual]

Other objects make use of these methods

Implements vtkVolumeReader.

virtual int vtkVolume16Reader::RequestData ( vtkInformation request,
vtkInformationVector **  inputVector,
vtkInformationVector outputVector 
) [protected, virtual]

This is called in response to a REQUEST_DATA request from the executive. Subclasses should override either this method or the ExecuteDataWithInformation method in order to generate data for their outputs. For images, the output arrays will already be allocated, so all that is necessary is to fill in the voxel values.

Reimplemented from vtkImageAlgorithm.

virtual int vtkVolume16Reader::RequestInformation ( vtkInformation request,
vtkInformationVector **  inputVector,
vtkInformationVector outputVector 
) [protected, virtual]

Subclasses can reimplement this method to collect information from their inputs and set information for their outputs.

Reimplemented from vtkImageAlgorithm.

void vtkVolume16Reader::TransformSlice ( unsigned short *  slice,
unsigned short *  pixels,
int  k,
int  dimensions[3],
int  bounds[3] 
) [protected]
void vtkVolume16Reader::ComputeTransformedDimensions ( int  dimensions[3]) [protected]
void vtkVolume16Reader::ComputeTransformedBounds ( int  bounds[6]) [protected]
void vtkVolume16Reader::ComputeTransformedSpacing ( double  Spacing[3]) [protected]
void vtkVolume16Reader::ComputeTransformedOrigin ( double  origin[3]) [protected]
void vtkVolume16Reader::AdjustSpacingAndOrigin ( int  dimensions[3],
double  Spacing[3],
double  origin[3] 
) [protected]
void vtkVolume16Reader::ReadImage ( int  ImageNumber,
vtkUnsignedShortArray  
) [protected]
void vtkVolume16Reader::ReadVolume ( int  FirstImage,
int  LastImage,
vtkUnsignedShortArray  
) [protected]
int vtkVolume16Reader::Read16BitImage ( FILE *  fp,
unsigned short *  pixels,
int  xsize,
int  ysize,
int  skip,
int  swapBytes 
) [protected]

Member Data Documentation

Definition at line 138 of file vtkVolume16Reader.h.

unsigned short vtkVolume16Reader::DataMask [protected]

Definition at line 139 of file vtkVolume16Reader.h.

Definition at line 140 of file vtkVolume16Reader.h.

Definition at line 141 of file vtkVolume16Reader.h.

Definition at line 142 of file vtkVolume16Reader.h.


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