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vtkImageGradient Class Reference

Computes the gradient vector. More...

#include <vtkImageGradient.h>

Inheritance diagram for vtkImageGradient:

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Collaboration diagram for vtkImageGradient:

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List of all members.

Public Methods

virtual const char * GetClassName ()
virtual int IsA (const char *type)
void PrintSelf (ostream &os, vtkIndent indent)
virtual void SetDimensionality (int)
virtual int GetDimensionality ()
virtual void SetHandleBoundaries (int)
virtual int GetHandleBoundaries ()
virtual void HandleBoundariesOn ()
virtual void HandleBoundariesOff ()

Static Public Methods

vtkImageGradient * New ()
int IsTypeOf (const char *type)
vtkImageGradient * SafeDownCast (vtkObject *o)

Protected Methods

 vtkImageGradient ()
 ~vtkImageGradient ()
 vtkImageGradient (const vtkImageGradient &)
void operator= (const vtkImageGradient &)
void ExecuteInformation (vtkImageData *inData, vtkImageData *outData)
void ComputeInputUpdateExtent (int inExt[6], int outExt[6])
void ExecuteInformation ()
void ThreadedExecute (vtkImageData *inData, vtkImageData *outData, int extent[6], int id)

Protected Attributes

int HandleBoundaries
int Dimensionality

Detailed Description

Computes the gradient vector.

Date:
2000/12/10 20:09:06
Revision:
1.28
Thanks:
Thanks to C. Charles Law who developed this class.
vtkImageGradient computes the gradient vector of an image. The vector results are stored as scalar components. The Dimensionality determines whether to perform a 2d or 3d gradient. The default is two dimensional XY gradient. OutputScalarType is always float. Gradient is computed using central differences.
Examples:
vtkImageGradient (examples)


Member Function Documentation

virtual const char* vtkImageGradient::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 vtkImageToImageFilter.

virtual int vtkImageGradient::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 vtkImageToImageFilter.

int vtkImageGradient::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 vtkImageToImageFilter.

vtkImageGradient* vtkImageGradient::New   [static]
 

Instantiate object with no start, end, or progress methods.

Reimplemented from vtkImageToImageFilter.

void vtkImageGradient::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 vtkImageToImageFilter.

vtkImageGradient* vtkImageGradient::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 vtkImageToImageFilter.

virtual void vtkImageGradient::SetDimensionality int    [virtual]
 

Determines how the input is interpreted (set of 2d slices ...)

virtual void vtkImageGradient::SetHandleBoundaries int    [virtual]
 

If "HandleBoundariesOn" then boundary pixels are duplicated So central differences can get values.

void vtkImageGradient::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.


The documentation for this class was generated from the following file:
Generated on Tue Mar 19 13:26:20 2002 for VTK by doxygen1.2.14 written by Dimitri van Heesch, © 1997-2002