Computes the gradient vector. More...
#include <vtkImageGradient.h>
Detailed Description
Computes the gradient vector.
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 double. Gradient is computed using central differences.
- Examples:
- vtkImageGradient (Examples)
- Tests:
- vtkImageGradient (Tests)
Definition at line 37 of file vtkImageGradient.h.
Member Typedef Documentation
Reimplemented from vtkThreadedImageAlgorithm.
Definition at line 41 of file vtkImageGradient.h.
Constructor & Destructor Documentation
| vtkImageGradient::vtkImageGradient | ( | ) | [protected] |
| vtkImageGradient::~vtkImageGradient | ( | ) | [inline, protected] |
Definition at line 62 of file vtkImageGradient.h.
Member Function Documentation
| static vtkImageGradient* vtkImageGradient::New | ( | ) | [static] |
Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
Reimplemented from vtkAlgorithm.
| static int vtkImageGradient::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 vtkThreadedImageAlgorithm.
| virtual int vtkImageGradient::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 vtkThreadedImageAlgorithm.
| static vtkImageGradient* vtkImageGradient::SafeDownCast | ( | vtkObjectBase * | o | ) | [static] |
Reimplemented from vtkThreadedImageAlgorithm.
| virtual vtkObjectBase* vtkImageGradient::NewInstanceInternal | ( | ) | const [protected, virtual] |
Reimplemented from vtkThreadedImageAlgorithm.
| vtkImageGradient* vtkImageGradient::NewInstance | ( | ) | const |
Reimplemented from vtkThreadedImageAlgorithm.
| 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 vtkThreadedImageAlgorithm.
| virtual void vtkImageGradient::SetDimensionality | ( | int | ) | [virtual] |
Determines how the input is interpreted (set of 2d slices ...)
| virtual int vtkImageGradient::GetDimensionality | ( | ) | [virtual] |
Determines how the input is interpreted (set of 2d slices ...)
| virtual void vtkImageGradient::SetHandleBoundaries | ( | int | ) | [virtual] |
Get/Set whether to handle boundaries. If enabled, boundary pixels are treated as duplicated so that central differencing works for the boundary pixels. If disabled, the output whole extent of the image is reduced by one pixel.
| virtual int vtkImageGradient::GetHandleBoundaries | ( | ) | [virtual] |
Get/Set whether to handle boundaries. If enabled, boundary pixels are treated as duplicated so that central differencing works for the boundary pixels. If disabled, the output whole extent of the image is reduced by one pixel.
| virtual void vtkImageGradient::HandleBoundariesOn | ( | ) | [virtual] |
Get/Set whether to handle boundaries. If enabled, boundary pixels are treated as duplicated so that central differencing works for the boundary pixels. If disabled, the output whole extent of the image is reduced by one pixel.
| virtual void vtkImageGradient::HandleBoundariesOff | ( | ) | [virtual] |
Get/Set whether to handle boundaries. If enabled, boundary pixels are treated as duplicated so that central differencing works for the boundary pixels. If disabled, the output whole extent of the image is reduced by one pixel.
| virtual int vtkImageGradient::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.
| virtual int vtkImageGradient::RequestUpdateExtent | ( | vtkInformation * | , |
| vtkInformationVector ** | , | ||
| vtkInformationVector * | |||
| ) | [protected, virtual] |
Subclasses can reimplement this method to translate the update extent requests from each output port into update extent requests for the input connections.
Reimplemented from vtkImageAlgorithm.
| virtual int vtkImageGradient::RequestData | ( | vtkInformation * | request, |
| vtkInformationVector ** | inputVector, | ||
| vtkInformationVector * | outputVector | ||
| ) | [protected, virtual] |
This is called by the superclass. This is the method you should override.
Reimplemented from vtkThreadedImageAlgorithm.
| void vtkImageGradient::ThreadedRequestData | ( | vtkInformation * | request, |
| vtkInformationVector ** | inputVector, | ||
| vtkInformationVector * | outputVector, | ||
| vtkImageData *** | inData, | ||
| vtkImageData ** | outData, | ||
| int | extent[6], | ||
| int | threadId | ||
| ) | [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 vtkThreadedImageAlgorithm.
Member Data Documentation
int vtkImageGradient::HandleBoundaries [protected] |
Definition at line 62 of file vtkImageGradient.h.
int vtkImageGradient::Dimensionality [protected] |
Definition at line 65 of file vtkImageGradient.h.
The documentation for this class was generated from the following file:
- dox/Imaging/General/vtkImageGradient.h
