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itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType > Class Template Reference
[Image Gradient Filters]

Computes the gradient of an image using directional derivatives. More...

#include <itkGradientImageFilter.h>

List of all members.

Public Types

typedef GradientImageFilter Self
typedef TInputImage InputImageType
typedef InputImageType::Pointer InputImagePointer
typedef Image< CovariantVector<
TOutputValueType, itkGetStaticConstMacro(OutputImageDimension)>, itkGetStaticConstMacro(OutputImageDimension) 
OutputImageType )
typedef OutputImageType::Pointer OutputImagePointer
typedef ImageToImageFilter<
InputImageType, OutputImageType
Superclass
typedef SmartPointer< SelfPointer
typedef SmartPointer< const
Self
ConstPointer
typedef InputImageType::PixelType InputPixelType
typedef TOperatorValueType OperatorValueType
typedef TOutputValueType OutputValueType
typedef CovariantVector< OutputValueType,
itkGetStaticConstMacro(OutputImageDimension) 
OutputPixelType )
typedef OutputImageType::RegionType OutputImageRegionType

Public Member Functions

virtual const char * GetClassName () const
virtual void GenerateInputRequestedRegion () throw (InvalidRequestedRegionError)
void SetUseImageSpacingOn ()
void SetUseImageSpacingOff ()
 itkStaticConstMacro (InputImageDimension, unsigned int, TInputImage::ImageDimension)
 itkStaticConstMacro (OutputImageDimension, unsigned int, TInputImage::ImageDimension)
virtual void SetUseImageSpacing (bool _arg)
virtual bool GetUseImageSpacing ()

Static Public Member Functions

Pointer New ()

Protected Member Functions

 GradientImageFilter ()
virtual ~GradientImageFilter ()
void PrintSelf (std::ostream &os, Indent indent) const
void ThreadedGenerateData (const OutputImageRegionType &outputRegionForThread, int threadId)


Detailed Description

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
class itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >

Computes the gradient of an image using directional derivatives.

Computes the gradient of an image using directional derivatives. The directional derivative at each pixel location is computed by convolution with a first-order derivative operator.

The second template parameter defines the value type used in the derivative operator (defaults to float). The third template parameter defines the value type used for output image (defaults to float). The output image is defined as a covariant vector image whose value type is specified as this third template parameter.

See also:
Image

Neighborhood

NeighborhoodOperator

NeighborhoodIterator

Definition at line 48 of file itkGradientImageFilter.h.


Member Typedef Documentation

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef SmartPointer<const Self> itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::ConstPointer
 

Definition at line 72 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef InputImageType::Pointer itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::InputImagePointer
 

Definition at line 65 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef TInputImage itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::InputImageType
 

Convenient typedefs for simplifying declarations. Definition at line 64 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef InputImageType::PixelType itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::InputPixelType
 

Image typedef support. Definition at line 81 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef TOperatorValueType itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::OperatorValueType
 

Definition at line 82 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef OutputImageType::Pointer itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::OutputImagePointer
 

Definition at line 67 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef OutputImageType::RegionType itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::OutputImageRegionType
 

Definition at line 85 of file itkGradientImageFilter.h.

Referenced by itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::~GradientImageFilter().

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef Image<CovariantVector<TOutputValueType, itkGetStaticConstMacro(OutputImageDimension)>, itkGetStaticConstMacro(OutputImageDimension) itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::OutputImageType)
 

Definition at line 66 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef CovariantVector<OutputValueType, itkGetStaticConstMacro(OutputImageDimension) itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::OutputPixelType)
 

Definition at line 84 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef TOutputValueType itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::OutputValueType
 

Definition at line 83 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef SmartPointer<Self> itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::Pointer
 

Definition at line 71 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef GradientImageFilter itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::Self
 

Standard class typedefs. Definition at line 61 of file itkGradientImageFilter.h.

Referenced by itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::~GradientImageFilter().

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
typedef ImageToImageFilter< InputImageType, OutputImageType> itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::Superclass
 

Standard class typedefs. Definition at line 70 of file itkGradientImageFilter.h.


Constructor & Destructor Documentation

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::GradientImageFilter  )  [inline, protected]
 

Definition at line 112 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
virtual itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::~GradientImageFilter  )  [inline, protected, virtual]
 

Definition at line 116 of file itkGradientImageFilter.h.

References itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::OutputImageRegionType, and itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::Self.


Member Function Documentation

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
virtual void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::GenerateInputRequestedRegion  )  throw (InvalidRequestedRegionError) [virtual]
 

GradientImageFilter needs a larger input requested region than the output requested region. As such, GradientImageFilter needs to provide an implementation for GenerateInputRequestedRegion() in order to inform the pipeline execution model.

See also:
ImageToImageFilter::GenerateInputRequestedRegion()

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
virtual const char* itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::GetClassName  )  const [virtual]
 

Run-time type information (and related methods).

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
virtual bool itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::GetUseImageSpacing  )  [virtual]
 

Set/Get whether or not the filter will use the spacing of the input image in its calculations

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::itkStaticConstMacro OutputImageDimension  ,
unsigned  int,
TInputImage::ImageDimension 
 

Extract dimension from input image.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::itkStaticConstMacro InputImageDimension  ,
unsigned  int,
TInputImage::ImageDimension 
 

Extract dimension from input image.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
Pointer itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::New  )  [static]
 

Method for creation through the object factory.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::PrintSelf std::ostream &  os,
Indent  indent
const [protected]
 

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
virtual void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::SetUseImageSpacing bool  _arg  )  [virtual]
 

Set/Get whether or not the filter will use the spacing of the input image in its calculations

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::SetUseImageSpacingOff  )  [inline]
 

Ignore the image spacing. Use this option if you want derivatives in isotropic pixel space. Default is UseImageSpacingOn. Definition at line 102 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::SetUseImageSpacingOn  )  [inline]
 

Use the image spacing information in calculations. Use this option if you want derivatives in physical space. Default is UseImageSpacingOn. Definition at line 97 of file itkGradientImageFilter.h.

template<class TInputImage, class TOperatorValueType = float, class TOutputValueType = float>
void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType >::ThreadedGenerateData const OutputImageRegionType outputRegionForThread,
int  threadId
[protected]
 

GradientImageFilter can be implemented as a multithreaded filter. Therefore, this implementation provides a ThreadedGenerateData() routine which is called for each processing thread. The output image data is allocated automatically by the superclass prior to calling ThreadedGenerateData(). ThreadedGenerateData can only write to the portion of the output image specified by the parameter "outputRegionForThread"

See also:
ImageToImageFilter::ThreadedGenerateData(), ImageToImageFilter::GenerateData()


The documentation for this class was generated from the following file:
Generated at Sat Mar 31 02:44:20 2007 for ITK by doxygen 1.3.8 written by Dimitri van Heesch, © 1997-2000