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vtkImageAnisotropicDiffusion2D Class Reference

edge preserving smoothing. More...

#include <vtkImageAnisotropicDiffusion2D.h>

Inheritance diagram for vtkImageAnisotropicDiffusion2D:

[legend]Collaboration diagram for vtkImageAnisotropicDiffusion2D:

[legend]List of all members.

Public Methods
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
void	SetNumberOfIterations (int num)
virtual int	GetNumberOfIterations ()
virtual void	SetDiffusionThreshold (float)
virtual float	GetDiffusionThreshold ()
virtual void	SetDiffusionFactor (float)
virtual float	GetDiffusionFactor ()
virtual void	SetFaces (int)
virtual int	GetFaces ()
virtual void	FacesOn ()
virtual void	FacesOff ()
virtual void	SetEdges (int)
virtual int	GetEdges ()
virtual void	EdgesOn ()
virtual void	EdgesOff ()
virtual void	SetCorners (int)
virtual int	GetCorners ()
virtual void	CornersOn ()
virtual void	CornersOff ()
virtual void	SetGradientMagnitudeThreshold (int)
virtual int	GetGradientMagnitudeThreshold ()
virtual void	GradientMagnitudeThresholdOn ()
virtual void	GradientMagnitudeThresholdOff ()
Static Public Methods
vtkImageAnisotropicDiffusion2D *	New ()
int	IsTypeOf (const char *type)
vtkImageAnisotropicDiffusion2D *	SafeDownCast (vtkObject *o)
Protected Methods
	vtkImageAnisotropicDiffusion2D ()
	~vtkImageAnisotropicDiffusion2D ()
	vtkImageAnisotropicDiffusion2D (const vtkImageAnisotropicDiffusion2D &)
void	operator= (const vtkImageAnisotropicDiffusion2D &)
void	ThreadedExecute (vtkImageData *inData, vtkImageData *outData, int extent[6], int id)
void	Iterate (vtkImageData *in, vtkImageData *out, float ar0, float ar1, int *coreExtent, int count)
Protected Attributes
int	NumberOfIterations
float	DiffusionThreshold
float	DiffusionFactor
int	Faces
int	Edges
int	Corners
int	GradientMagnitudeThreshold

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Detailed Description

edge preserving smoothing.

Date:

2000/12/10 20:09:03

Revision:

1.24

Thanks:

Thanks to C. Charles Law who developed this class.

vtkImageAnisotropicDiffusion2D diffuses a 2d image iteratively. The neighborhood of the diffusion is determined by the instance flags. If "Edges" is on the 4 edge connected voxels are included, and if "Corners" is on, the 4 corner connected voxels are included. "DiffusionFactor" determines how far a pixel value moves toward its neighbors, and is insensitive to the number of neighbors chosen. The diffusion is anisotropic because it only occurs when a gradient measure is below "GradientThreshold". Two gradient measures exist and are toggled by the "GradientMagnitudeThreshold" flag. When "GradientMagnitudeThreshold" is on, the magnitude of the gradient, computed by central differences, above "DiffusionThreshold" a voxel is not modified. The alternative measure examines each neighbor independently. The gradient between the voxel and the neighbor must be below the "DiffusionThreshold" for diffusion to occur with THAT neighbor.

See also:

vtkImageAnisotropicDiffusion3D

Examples:

vtkImageAnisotropicDiffusion2D (examples)

Definition at line 75 of file vtkImageAnisotropicDiffusion2D.h.

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Constructor & Destructor Documentation

vtkImageAnisotropicDiffusion2D::vtkImageAnisotropicDiffusion2D (    )  [protected]

vtkImageAnisotropicDiffusion2D::~vtkImageAnisotropicDiffusion2D (    )  [inline, protected]

Definition at line 116 of file vtkImageAnisotropicDiffusion2D.h.

vtkImageAnisotropicDiffusion2D::vtkImageAnisotropicDiffusion2D (  const vtkImageAnisotropicDiffusion2D &    )  [inline, protected]

Definition at line 117 of file vtkImageAnisotropicDiffusion2D.h.

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Member Function Documentation

vtkImageAnisotropicDiffusion2D* vtkImageAnisotropicDiffusion2D::New (    )  [static]

Instantiate object with no start, end, or progress methods. Reimplemented from vtkImageSpatialFilter.

virtual const char* vtkImageAnisotropicDiffusion2D::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 vtkImageSpatialFilter.

int vtkImageAnisotropicDiffusion2D::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 vtkImageSpatialFilter.

virtual int vtkImageAnisotropicDiffusion2D::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 vtkImageSpatialFilter.

vtkImageAnisotropicDiffusion2D* vtkImageAnisotropicDiffusion2D::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 vtkImageSpatialFilter.

void vtkImageAnisotropicDiffusion2D::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 vtkImageSpatialFilter.

void vtkImageAnisotropicDiffusion2D::SetNumberOfIterations (  int    num )

This method sets the number of inputs which also affects the input neighborhood needed to compute one output pixel.

virtual int vtkImageAnisotropicDiffusion2D::GetNumberOfIterations (    )  [virtual]

Get the number of iterations.

virtual void vtkImageAnisotropicDiffusion2D::SetDiffusionThreshold (  float    )  [virtual]

Set/Get the difference threshold that stops diffusion.

virtual float vtkImageAnisotropicDiffusion2D::GetDiffusionThreshold (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::SetDiffusionFactor (  float    )  [virtual]

Set/Get the difference factor

virtual float vtkImageAnisotropicDiffusion2D::GetDiffusionFactor (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::SetFaces (  int    )  [virtual]

Choose neighbors to diffuse (6 faces, 12 edges, 8 corners).

virtual int vtkImageAnisotropicDiffusion2D::GetFaces (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::FacesOn (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::FacesOff (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::SetEdges (  int    )  [virtual]

virtual int vtkImageAnisotropicDiffusion2D::GetEdges (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::EdgesOn (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::EdgesOff (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::SetCorners (  int    )  [virtual]

virtual int vtkImageAnisotropicDiffusion2D::GetCorners (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::CornersOn (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::CornersOff (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::SetGradientMagnitudeThreshold (  int    )  [virtual]

Switch between gradient magnitude threshold and pixel gradient threshold.

virtual int vtkImageAnisotropicDiffusion2D::GetGradientMagnitudeThreshold (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::GradientMagnitudeThresholdOn (    )  [virtual]

virtual void vtkImageAnisotropicDiffusion2D::GradientMagnitudeThresholdOff (    )  [virtual]

void vtkImageAnisotropicDiffusion2D::operator= (  const vtkImageAnisotropicDiffusion2D &    )  [inline, protected]

Definition at line 118 of file vtkImageAnisotropicDiffusion2D.h.

void vtkImageAnisotropicDiffusion2D::ThreadedExecute (  vtkImageData *    inData, vtkImageData *    outData, int    extent[6], int    id )  [protected, virtual]

If the subclass does not define an Execute method, then the task will be broken up, multiple threads will be spawned, and each thread will call this method. It is public so that the thread functions can call this method. Reimplemented from vtkImageToImageFilter.

void vtkImageAnisotropicDiffusion2D::Iterate (  vtkImageData *    in, vtkImageData *    out, float    ar0, float    ar1, int *    coreExtent, int    count )  [protected]

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Member Data Documentation

int vtkImageAnisotropicDiffusion2D::NumberOfIterations [protected]

Definition at line 120 of file vtkImageAnisotropicDiffusion2D.h.

float vtkImageAnisotropicDiffusion2D::DiffusionThreshold [protected]

Definition at line 121 of file vtkImageAnisotropicDiffusion2D.h.

float vtkImageAnisotropicDiffusion2D::DiffusionFactor [protected]

Definition at line 122 of file vtkImageAnisotropicDiffusion2D.h.

int vtkImageAnisotropicDiffusion2D::Faces [protected]

Definition at line 124 of file vtkImageAnisotropicDiffusion2D.h.

int vtkImageAnisotropicDiffusion2D::Edges [protected]

Definition at line 125 of file vtkImageAnisotropicDiffusion2D.h.

int vtkImageAnisotropicDiffusion2D::Corners [protected]

Definition at line 126 of file vtkImageAnisotropicDiffusion2D.h.

int vtkImageAnisotropicDiffusion2D::GradientMagnitudeThreshold [protected]

Definition at line 128 of file vtkImageAnisotropicDiffusion2D.h.

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

• imaging/vtkImageAnisotropicDiffusion2D.h

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