vtkImageAnisotropicDiffusion2D Class Reference
#include <vtkImageAnisotropicDiffusion2D.h>
Inheritance diagram for vtkImageAnisotropicDiffusion2D:
[legend]Collaboration diagram for vtkImageAnisotropicDiffusion2D:
[legend]List of all members.
Detailed Description
edge preserving smoothing.
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
- Created by:
-
- CVS contributions (if > 5%):
- Law, Charles (64%)
- Martin, Ken (27%)
- CVS logs (CVSweb):
/Imaging/vtkImageAnisotropicDiffusion2D.cxx)/Imaging/vtkImageAnisotropicDiffusion2D.h)
- Tests:
- vtkImageAnisotropicDiffusion2D (Tests)
Definition at line 58 of file vtkImageAnisotropicDiffusion2D.h.
Member Typedef Documentation
Constructor & Destructor Documentation
| vtkImageAnisotropicDiffusion2D::vtkImageAnisotropicDiffusion2D |
( |
|
) |
[protected] |
|
Member Function Documentation
|
|
Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
Reimplemented from vtkImageSpatialFilter. |
| virtual const char* vtkImageAnisotropicDiffusion2D::GetClassName |
( |
|
) |
[virtual] |
|
| 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 vtkTypeRevisionMacro 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 vtkTypeRevisionMacro 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 interations which also affects the input neighborhood needed to compute one output pixel. Each iterations requires an extra pixel layer on the neighborhood. This is only relavent when you are trying to stream or are requesting a sub extent of the "wholeExtent". |
| virtual int vtkImageAnisotropicDiffusion2D::GetNumberOfIterations |
( |
|
) |
[virtual] |
|
|
|
Get the number of iterations. |
| virtual void vtkImageAnisotropicDiffusion2D::SetDiffusionThreshold |
( |
double |
|
) |
[virtual] |
|
|
|
Set/Get the difference threshold that stops diffusion. when the difference between two pixel is greater than this threshold, the pixels are not diffused. This causes diffusion to avoid sharp edges. If the GradientMagnitudeThreshold is set, then gradient magnitude is used for comparison instead of pixel differences. |
| virtual double vtkImageAnisotropicDiffusion2D::GetDiffusionThreshold |
( |
|
) |
[virtual] |
|
|
|
Set/Get the difference threshold that stops diffusion. when the difference between two pixel is greater than this threshold, the pixels are not diffused. This causes diffusion to avoid sharp edges. If the GradientMagnitudeThreshold is set, then gradient magnitude is used for comparison instead of pixel differences. |
| virtual void vtkImageAnisotropicDiffusion2D::SetDiffusionFactor |
( |
double |
|
) |
[virtual] |
|
|
|
The diffusion factor specifies how much neighboring pixels effect each other. No diffusion occurs with a factor of 0, and a diffusion factor of 1 causes the pixel to become the average of all its neighbors. |
| virtual double vtkImageAnisotropicDiffusion2D::GetDiffusionFactor |
( |
|
) |
[virtual] |
|
|
|
The diffusion factor specifies how much neighboring pixels effect each other. No diffusion occurs with a factor of 0, and a diffusion factor of 1 causes the pixel to become the average of all its neighbors. |
| virtual void vtkImageAnisotropicDiffusion2D::SetFaces |
( |
int |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual int vtkImageAnisotropicDiffusion2D::GetFaces |
( |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual void vtkImageAnisotropicDiffusion2D::FacesOn |
( |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual void vtkImageAnisotropicDiffusion2D::FacesOff |
( |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual void vtkImageAnisotropicDiffusion2D::SetEdges |
( |
int |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual int vtkImageAnisotropicDiffusion2D::GetEdges |
( |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual void vtkImageAnisotropicDiffusion2D::EdgesOn |
( |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual void vtkImageAnisotropicDiffusion2D::EdgesOff |
( |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual void vtkImageAnisotropicDiffusion2D::SetCorners |
( |
int |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual int vtkImageAnisotropicDiffusion2D::GetCorners |
( |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual void vtkImageAnisotropicDiffusion2D::CornersOn |
( |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual void vtkImageAnisotropicDiffusion2D::CornersOff |
( |
|
) |
[virtual] |
|
|
|
Choose neighbors to diffuse (6 faces, 12 edges, 8 corners). |
| virtual void vtkImageAnisotropicDiffusion2D::SetGradientMagnitudeThreshold |
( |
int |
|
) |
[virtual] |
|
|
|
Switch between gradient magnitude threshold and pixel gradient threshold. |
| virtual int vtkImageAnisotropicDiffusion2D::GetGradientMagnitudeThreshold |
( |
|
) |
[virtual] |
|
|
|
Switch between gradient magnitude threshold and pixel gradient threshold. |
| virtual void vtkImageAnisotropicDiffusion2D::GradientMagnitudeThresholdOn |
( |
|
) |
[virtual] |
|
|
|
Switch between gradient magnitude threshold and pixel gradient threshold. |
| virtual void vtkImageAnisotropicDiffusion2D::GradientMagnitudeThresholdOff |
( |
|
) |
[virtual] |
|
|
|
Switch between gradient magnitude threshold and pixel gradient threshold. |
| 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, |
|
|
double |
ar0, |
|
|
double |
ar1, |
|
|
int * |
coreExtent, |
|
|
int |
count |
|
) |
[protected] |
|
Member Data Documentation
The documentation for this class was generated from the following file: