VTK
Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions
vtkImageCityBlockDistance Class Reference

1,2 or 3D distance map. More...

#include <vtkImageCityBlockDistance.h>

Inheritance diagram for vtkImageCityBlockDistance:
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List of all members.

Public Types

typedef vtkImageDecomposeFilter Superclass

Public Member Functions

virtual int IsA (const char *type)
vtkImageCityBlockDistanceNewInstance () const

Static Public Member Functions

static vtkImageCityBlockDistanceNew ()
static int IsTypeOf (const char *type)
static vtkImageCityBlockDistanceSafeDownCast (vtkObjectBase *o)

Protected Member Functions

virtual vtkObjectBaseNewInstanceInternal () const
 vtkImageCityBlockDistance ()
 ~vtkImageCityBlockDistance ()
virtual int IterativeRequestUpdateExtent (vtkInformation *in, vtkInformation *out)
virtual int IterativeRequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
void AllocateOutputScalars (vtkImageData *outData, int *updateExtent, int *wholeExtent, vtkInformation *outInfo)

Detailed Description

1,2 or 3D distance map.

vtkImageCityBlockDistance creates a distance map using the city block (Manhatten) distance measure. The input is a mask. Zero values are considered boundaries. The output pixel is the minimum of the input pixel and the distance to a boundary (or neighbor value + 1 unit). distance values are calculated in pixels. The filter works by taking 6 passes (for 3d distance map): 2 along each axis (forward and backward). Each pass keeps a running minimum distance. For some reason, I preserve the sign if the distance. If the input mask is initially negative, the output distances will be negative. Distances maps can have inside (negative regions) and outsides (positive regions).

Tests:
vtkImageCityBlockDistance (Tests)

Definition at line 41 of file vtkImageCityBlockDistance.h.


Member Typedef Documentation

Construct an instance of vtkImageDecomposeFilter filter with default dimensionality 3.

Reimplemented from vtkImageDecomposeFilter.

Definition at line 45 of file vtkImageCityBlockDistance.h.


Constructor & Destructor Documentation

Definition at line 49 of file vtkImageCityBlockDistance.h.


Member Function Documentation

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkAlgorithm.

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

Construct an instance of vtkImageDecomposeFilter filter with default dimensionality 3.

Reimplemented from vtkImageDecomposeFilter.

virtual int vtkImageCityBlockDistance::IsA ( const char *  type) [virtual]

Construct an instance of vtkImageDecomposeFilter filter with default dimensionality 3.

Reimplemented from vtkImageDecomposeFilter.

Construct an instance of vtkImageDecomposeFilter filter with default dimensionality 3.

Reimplemented from vtkImageDecomposeFilter.

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

Construct an instance of vtkImageDecomposeFilter filter with default dimensionality 3.

Reimplemented from vtkImageDecomposeFilter.

Construct an instance of vtkImageDecomposeFilter filter with default dimensionality 3.

Reimplemented from vtkImageDecomposeFilter.

Reimplemented from vtkImageIterateFilter.

Reimplemented from vtkImageIterateFilter.

void vtkImageCityBlockDistance::AllocateOutputScalars ( vtkImageData outData,
int updateExtent,
int wholeExtent,
vtkInformation outInfo 
) [protected]

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