template<typename TInputImage, typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
class itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >
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 60 of file itkGradientImageFilter.h.
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| GradientImageFilter () |
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void | PrintSelf (std::ostream &os, Indent indent) const override |
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void | ThreadedGenerateData (const OutputImageRegionType &outputRegionForThread, ThreadIdType threadId) override |
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virtual | ~GradientImageFilter () |
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virtual void | CallCopyInputRegionToOutputRegion (OutputImageRegionType &destRegion, const InputImageRegionType &srcRegion) |
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virtual void | CallCopyOutputRegionToInputRegion (InputImageRegionType &destRegion, const OutputImageRegionType &srcRegion) |
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| ImageToImageFilter () |
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virtual void | VerifyInputInformation () override |
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| ~ImageToImageFilter () |
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void | PushBackInput (const DataObject *input) override |
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void | PushFrontInput (const DataObject *input) override |
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virtual void | AfterThreadedGenerateData () |
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virtual void | AllocateOutputs () |
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virtual void | BeforeThreadedGenerateData () |
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virtual void | GenerateData () override |
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virtual const ImageRegionSplitterBase * | GetImageRegionSplitter () const |
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| ImageSource () |
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virtual unsigned int | SplitRequestedRegion (unsigned int i, unsigned int pieces, OutputImageRegionType &splitRegion) |
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virtual | ~ImageSource () |
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virtual void | AddInput (DataObject *input) |
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virtual void | AddOutput (DataObject *output) |
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bool | AddRequiredInputName (const DataObjectIdentifierType &) |
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bool | AddRequiredInputName (const DataObjectIdentifierType &, DataObjectPointerArraySizeType idx) |
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virtual void | CacheInputReleaseDataFlags () |
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virtual void | GenerateOutputRequestedRegion (DataObject *output) |
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DataObject * | GetInput (const DataObjectIdentifierType &key) |
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const DataObject * | GetInput (const DataObjectIdentifierType &key) const |
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virtual const DataObjectPointerArraySizeType & | GetNumberOfRequiredInputs () const |
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virtual const DataObjectPointerArraySizeType & | GetNumberOfRequiredOutputs () const |
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bool | IsIndexedInputName (const DataObjectIdentifierType &) const |
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bool | IsIndexedOutputName (const DataObjectIdentifierType &) const |
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bool | IsRequiredInputName (const DataObjectIdentifierType &) const |
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| itkLegacyMacro (virtual void RemoveOutput(DataObject *output)) |
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| itkLegacyMacro (void SetNumberOfOutputs(DataObjectPointerArraySizeType num)) |
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| itkLegacyMacro (virtual void RemoveInput(DataObject *input)) |
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| itkLegacyMacro (void SetNumberOfInputs(DataObjectPointerArraySizeType num)) |
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DataObjectPointerArraySizeType | MakeIndexFromInputName (const DataObjectIdentifierType &name) const |
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DataObjectPointerArraySizeType | MakeIndexFromOutputName (const DataObjectIdentifierType &name) const |
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DataObjectIdentifierType | MakeNameFromInputIndex (DataObjectPointerArraySizeType idx) const |
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DataObjectIdentifierType | MakeNameFromOutputIndex (DataObjectPointerArraySizeType idx) const |
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| ProcessObject () |
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virtual void | PropagateResetPipeline () |
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virtual void | ReleaseInputs () |
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virtual void | RemoveInput (const DataObjectIdentifierType &key) |
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virtual void | RemoveInput (DataObjectPointerArraySizeType) |
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virtual void | RemoveOutput (const DataObjectIdentifierType &key) |
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virtual void | RemoveOutput (DataObjectPointerArraySizeType idx) |
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bool | RemoveRequiredInputName (const DataObjectIdentifierType &) |
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virtual void | RestoreInputReleaseDataFlags () |
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virtual void | SetInput (const DataObjectIdentifierType &key, DataObject *input) |
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virtual void | SetNthInput (DataObjectPointerArraySizeType num, DataObject *input) |
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virtual void | SetNthOutput (DataObjectPointerArraySizeType num, DataObject *output) |
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void | SetNumberOfIndexedInputs (DataObjectPointerArraySizeType num) |
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void | SetNumberOfIndexedOutputs (DataObjectPointerArraySizeType num) |
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virtual void | SetNumberOfRequiredInputs (DataObjectPointerArraySizeType) |
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virtual void | SetNumberOfRequiredOutputs (DataObjectPointerArraySizeType _arg) |
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virtual void | SetOutput (const DataObjectIdentifierType &key, DataObject *output) |
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virtual void | SetPrimaryInput (DataObject *input) |
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virtual void | SetPrimaryOutput (DataObject *output) |
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void | SetRequiredInputNames (const NameArray &) |
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virtual void | VerifyPreconditions () |
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| ~ProcessObject () |
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DataObject * | GetInput (DataObjectPointerArraySizeType idx) |
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const DataObject * | GetInput (DataObjectPointerArraySizeType idx) const |
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DataObject * | GetPrimaryInput () |
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const DataObject * | GetPrimaryInput () const |
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virtual void | SetPrimaryInputName (const DataObjectIdentifierType &key) |
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virtual const char * | GetPrimaryInputName (void) const |
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DataObject * | GetOutput (const DataObjectIdentifierType &key) |
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const DataObject * | GetOutput (const DataObjectIdentifierType &key) const |
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virtual void | SetPrimaryOutputName (const DataObjectIdentifierType &key) |
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virtual const char * | GetPrimaryOutputName (void) const |
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DataObject * | GetOutput (DataObjectPointerArraySizeType idx) |
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const DataObject * | GetOutput (DataObjectPointerArraySizeType idx) const |
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DataObject * | GetPrimaryOutput () |
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const DataObject * | GetPrimaryOutput () const |
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| Object () |
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bool | PrintObservers (std::ostream &os, Indent indent) const |
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virtual void | SetTimeStamp (const TimeStamp &time) |
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virtual | ~Object () |
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virtual LightObject::Pointer | InternalClone () const |
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| LightObject () |
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virtual void | PrintHeader (std::ostream &os, Indent indent) const |
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virtual void | PrintTrailer (std::ostream &os, Indent indent) const |
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virtual | ~LightObject () |
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template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
virtual::itk::LightObject::Pointer itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::CreateAnother |
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Create an object from an instance, potentially deferring to a factory. This method allows you to create an instance of an object that is exactly the same type as the referring object. This is useful in cases where an object has been cast back to a base class.
Reimplemented from itk::Object.
template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
virtual void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::GenerateInputRequestedRegion |
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template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
virtual void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::GenerateOutputInformation |
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template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
virtual const char* itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::GetNameOfClass |
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template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
virtual bool itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::GetUseImageDirection |
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The UseImageDirection flag determines whether image derivatives are computed with respect to the image grid or with respect to the physical space. When this flag is ON the derivatives are computed with respect to the coodinate system of physical space. The difference is whether we take into account the image Direction or not. The flag ON will take into account the image direction and will result in an extra matrix multiplication compared to the amount of computation performed when the flag is OFF. The default value of this flag is On.
template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
virtual bool itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::GetUseImageSpacing |
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Set/Get whether or not the filter will use the spacing of the input image in its calculations
template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
Method for creation through the object factory.
template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::PrintSelf |
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template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
template<typename TValue >
template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
virtual void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::SetUseImageDirection |
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The UseImageDirection flag determines whether image derivatives are computed with respect to the image grid or with respect to the physical space. When this flag is ON the derivatives are computed with respect to the coodinate system of physical space. The difference is whether we take into account the image Direction or not. The flag ON will take into account the image direction and will result in an extra matrix multiplication compared to the amount of computation performed when the flag is OFF. The default value of this flag is On.
template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
virtual void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::SetUseImageSpacing |
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template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::SetUseImageSpacingOff |
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Ignore the image spacing. Use this option if you want derivatives in isotropic pixel space. Default is UseImageSpacingOn.
Definition at line 114 of file itkGradientImageFilter.h.
References itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::GenerateOutputInformation(), itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::GradientImageFilter(), itkConceptMacro, itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::operator=(), itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::PrintSelf(), itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::SetUseImageSpacing(), itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::ThreadedGenerateData(), and itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::~GradientImageFilter().
template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::SetUseImageSpacingOn |
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template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
virtual void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::UseImageDirectionOff |
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The UseImageDirection flag determines whether image derivatives are computed with respect to the image grid or with respect to the physical space. When this flag is ON the derivatives are computed with respect to the coodinate system of physical space. The difference is whether we take into account the image Direction or not. The flag ON will take into account the image direction and will result in an extra matrix multiplication compared to the amount of computation performed when the flag is OFF. The default value of this flag is On.
template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
virtual void itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::UseImageDirectionOn |
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The UseImageDirection flag determines whether image derivatives are computed with respect to the image grid or with respect to the physical space. When this flag is ON the derivatives are computed with respect to the coodinate system of physical space. The difference is whether we take into account the image Direction or not. The flag ON will take into account the image direction and will result in an extra matrix multiplication compared to the amount of computation performed when the flag is OFF. The default value of this flag is On.
template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
const unsigned int itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::InputImageDimension = TInputImage::ImageDimension |
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template<typename TInputImage , typename TOperatorValueType = float, typename TOutputValueType = float, typename TOutputImageType = Image< CovariantVector< TOutputValueType, TInputImage::ImageDimension >, TInputImage::ImageDimension >>
const unsigned int itk::GradientImageFilter< TInputImage, TOperatorValueType, TOutputValueType, TOutputImageType >::OutputImageDimension = TInputImage::ImageDimension |
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