ITK  4.3.0
Insight Segmentation and Registration Toolkit
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itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType > Class Template Reference

#include <itkCentralDifferenceImageFunction.h>

+ Inheritance diagram for itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >:
+ Collaboration diagram for itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >:

Detailed Description

template<class TInputImage, class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
class itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >

Calculate the derivative by central differencing.

This class is templated over the input image type, the coordinate representation type (e.g. float or double), and the output derivative type.

This class supports both scalar and vector pixel types for the input image, including VectorImage types.

For vector-pixel image types, the TOutputType template parameter must be set to a vector of appropriate size, to accomadate a result for each pixel component in each dimension. The output is packed by pixel component, i.e.

[C0D0, C0D1, ..., C0DN, C1D0, ...]

where C = pixel component, and D = image dimension.

The output type can be, for example:

CovariantVector<double, numberOfPixelComponents * ImageDimension>

or

Matrix<double, numberOfPixelComponents, ImageDimension>

Possible improvements:

1) speed performance: The template-specialization of the Evaluate*() methods (needed to support vector-pixel types) incur a performance penalty for the scalar-pixel case, when compared with previous scalar-only versions of the code. On MacOS (2.4GHz Core 2 Duo, gcc 4.2) the penalty is 0.5-2%, depending on the method. To recover this loss, the specialization of the methods would have to be done such that a nested subroutine need not be called, ie the specialization is performed on the Evaluate* methods directly. At the moment is seems this can't be done without requiring a template parameter on the methods.

2) the use of Neighborhood operators may improve efficiency.

Definition at line 80 of file itkCentralDifferenceImageFunction.h.

Classes

struct  OutputTypeSpecializationStructType
 

Public Types

typedef SmartPointer< const SelfConstPointer
 
typedef
Superclass::ContinuousIndexType 
ContinuousIndexType
 
typedef Superclass::IndexType IndexType
 
typedef TInputImage InputImageType
 
typedef
DefaultConvertPixelTraits
< InputPixelType
InputPixelConvertType
 
typedef InputImageType::PixelType InputPixelType
 
typedef InterpolatorType::Pointer InterpolatorPointer
 
typedef
InterpolateImageFunction
< TInputImage, TCoordRep > 
InterpolatorType
 
typedef
DefaultConvertPixelTraits
< OutputType
OutputConvertType
 
typedef Superclass::OutputType OutputType
 
typedef
OutputConvertType::ComponentType 
OutputValueType
 
typedef SmartPointer< SelfPointer
 
typedef Superclass::PointType PointType
 
typedef CovariantVector
< OutputValueType,
itkGetStaticConstMacro(ImageDimension) > 
ScalarDerivativeType
 
typedef
CentralDifferenceImageFunction 
Self
 
typedef TInputImage::SpacingType SpacingType
 
typedef ImageFunction
< TInputImage, TOutputType,
TCoordRep > 
Superclass
 
- Public Types inherited from itk::ImageFunction< TInputImage, TOutputType, TCoordRep >
typedef SmartPointer< const SelfConstPointer
 
typedef ContinuousIndex
< TCoordRep,
itkGetStaticConstMacro(ImageDimension) > 
ContinuousIndexType
 
typedef TCoordRep CoordRepType
 
typedef InputImageType::IndexType IndexType
 
typedef
InputImageType::IndexValueType 
IndexValueType
 
typedef
InputImageType::ConstPointer 
InputImageConstPointer
 
typedef TInputImage InputImageType
 
typedef InputImageType::PixelType InputPixelType
 
typedef TOutputType OutputType
 
typedef SmartPointer< SelfPointer
 
typedef Point< TCoordRep,
itkGetStaticConstMacro(ImageDimension) > 
PointType
 
typedef ImageFunction Self
 
typedef FunctionBase< Point
< TCoordRep,
itkGetStaticConstMacro(ImageDimension) >
, TOutputType > 
Superclass
 
- Public Types inherited from itk::FunctionBase< Point< TCoordRep, TInputImage::ImageDimension >, TOutputType >
typedef SmartPointer< const SelfConstPointer
 
typedef Point< TCoordRep,
TInputImage::ImageDimension > 
InputType
 
typedef TOutputType OutputType
 
typedef SmartPointer< SelfPointer
 
typedef FunctionBase Self
 
typedef Object Superclass
 
- Public Types inherited from itk::Object
typedef SmartPointer< const SelfConstPointer
 
typedef SmartPointer< SelfPointer
 
typedef Object Self
 
typedef LightObject Superclass
 
- Public Types inherited from itk::LightObject
typedef SmartPointer< const SelfConstPointer
 
typedef SmartPointer< SelfPointer
 
typedef LightObject Self
 

Public Member Functions

virtual ::itk::LightObject::Pointer CreateAnother (void) const
 
virtual OutputType Evaluate (const PointType &point) const
 
virtual OutputType EvaluateAtContinuousIndex (const ContinuousIndexType &cindex) const
 
virtual OutputType EvaluateAtIndex (const IndexType &index) const
 
virtual const InterpolatorTypeGetInterpolator ()
 
virtual const char * GetNameOfClass () const
 
virtual void SetInputImage (const TInputImage *inputData)
 
virtual void SetInterpolator (InterpolatorType *interpolator)
 
virtual void SetUseImageDirection (bool _arg)
 
virtual bool GetUseImageDirection () const
 
virtual void UseImageDirectionOn ()
 
virtual void UseImageDirectionOff ()
 
- Public Member Functions inherited from itk::ImageFunction< TInputImage, TOutputType, TCoordRep >
void ConvertContinuousIndexToNearestIndex (const ContinuousIndexType &cindex, IndexType &index) const
 
void ConvertPointToContinuousIndex (const PointType &point, ContinuousIndexType &cindex) const
 
void ConvertPointToNearestIndex (const PointType &point, IndexType &index) const
 
virtual TOutputType Evaluate (const PointType &point) const =0
 
virtual TOutputType EvaluateAtContinuousIndex (const ContinuousIndexType &index) const =0
 
virtual TOutputType EvaluateAtIndex (const IndexType &index) const =0
 
virtual const ContinuousIndexTypeGetEndContinuousIndex ()
 
virtual const IndexTypeGetEndIndex ()
 
const InputImageTypeGetInputImage () const
 
virtual const ContinuousIndexTypeGetStartContinuousIndex ()
 
virtual const IndexTypeGetStartIndex ()
 
virtual bool IsInsideBuffer (const IndexType &index) const
 
virtual bool IsInsideBuffer (const ContinuousIndexType &index) const
 
virtual bool IsInsideBuffer (const PointType &point) const
 

Static Public Member Functions

static Pointer New ()
 

Static Public Attributes

static const unsigned int ImageDimension = TInputImage::ImageDimension
 
- Static Public Attributes inherited from itk::ImageFunction< TInputImage, TOutputType, TCoordRep >
static const unsigned int ImageDimension
 

Protected Member Functions

 CentralDifferenceImageFunction ()
 
void PrintSelf (std::ostream &os, Indent indent) const
 
 ~CentralDifferenceImageFunction ()
 
- Protected Member Functions inherited from itk::ImageFunction< TInputImage, TOutputType, TCoordRep >
 ImageFunction ()
 
void PrintSelf (std::ostream &os, Indent indent) const
 
 ~ImageFunction ()
 
- Protected Member Functions inherited from itk::FunctionBase< Point< TCoordRep, TInputImage::ImageDimension >, TOutputType >
 FunctionBase ()
 
 ~FunctionBase ()
 
- Protected Member Functions inherited from itk::Object
 Object ()
 
bool PrintObservers (std::ostream &os, Indent indent) const
 
virtual void SetTimeStamp (const TimeStamp &time)
 
virtual ~Object ()
 
- Protected Member Functions inherited from itk::LightObject
virtual LightObject::Pointer InternalClone () const
 
 LightObject ()
 
virtual void PrintHeader (std::ostream &os, Indent indent) const
 
virtual void PrintTrailer (std::ostream &os, Indent indent) const
 
virtual ~LightObject ()
 

Private Member Functions

 CentralDifferenceImageFunction (const Self &)
 
void operator= (const Self &)
 
template<class Type >
void EvaluateAtIndexSpecialized (const IndexType &index, OutputType &derivative, OutputTypeSpecializationStructType< OutputType >) const
 
template<class Type >
void EvaluateAtIndexSpecialized (const IndexType &index, OutputType &derivative, OutputTypeSpecializationStructType< Type >) const
 
template<class Type >
void EvaluateAtContinuousIndexSpecialized (const ContinuousIndexType &index, OutputType &derivative, OutputTypeSpecializationStructType< OutputType >) const
 
template<class Type >
void EvaluateAtContinuousIndexSpecialized (const ContinuousIndexType &index, OutputType &derivative, OutputTypeSpecializationStructType< Type >) const
 
template<class Type >
void EvaluateSpecialized (const PointType &point, OutputType &derivative, OutputTypeSpecializationStructType< OutputType >) const
 
template<class Type >
void EvaluateSpecialized (const PointType &point, OutputType &derivative, OutputTypeSpecializationStructType< Type >) const
 

Private Attributes

InterpolatorPointer m_Interpolator
 
bool m_UseImageDirection
 

Additional Inherited Members

- Protected Types inherited from itk::LightObject
typedef int InternalReferenceCountType
 
- Protected Attributes inherited from itk::ImageFunction< TInputImage, TOutputType, TCoordRep >
ContinuousIndexType m_EndContinuousIndex
 
IndexType m_EndIndex
 
InputImageConstPointer m_Image
 
ContinuousIndexType m_StartContinuousIndex
 
IndexType m_StartIndex
 

Member Typedef Documentation

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef SmartPointer< const Self > itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::ConstPointer

Definition at line 97 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef Superclass::ContinuousIndexType itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::ContinuousIndexType

ContinuousIndex typedef support.

Definition at line 130 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef Superclass::IndexType itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::IndexType

Index typedef support.

Definition at line 127 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef TInputImage itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::InputImageType

InputImageType typedef support.

Definition at line 103 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef DefaultConvertPixelTraits< InputPixelType > itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::InputPixelConvertType

InputPixelConvert typedef support

Definition at line 112 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef InputImageType::PixelType itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::InputPixelType

InputPixelType typedef support

Definition at line 109 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef InterpolatorType::Pointer itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::InterpolatorPointer

Definition at line 140 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef InterpolateImageFunction< TInputImage, TCoordRep > itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::InterpolatorType

Interpolator typedef support.

Definition at line 139 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef DefaultConvertPixelTraits<OutputType> itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::OutputConvertType

Output convert typedef support

Definition at line 118 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef Superclass::OutputType itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::OutputType

OutputType typdef support.

Definition at line 115 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef OutputConvertType::ComponentType itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::OutputValueType

Output value typedef support

Definition at line 121 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef SmartPointer< Self > itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::Pointer

Definition at line 96 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef Superclass::PointType itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::PointType

Point typedef support.

Definition at line 133 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef CovariantVector<OutputValueType, itkGetStaticConstMacro(ImageDimension) > itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::ScalarDerivativeType

Scalar derivative typedef support

Definition at line 124 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef CentralDifferenceImageFunction itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::Self

Standard class typedefs.

Definition at line 92 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef TInputImage::SpacingType itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::SpacingType

Spacing typedef support.

Definition at line 136 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
typedef ImageFunction< TInputImage, TOutputType, TCoordRep > itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::Superclass

Definition at line 95 of file itkCentralDifferenceImageFunction.h.

Constructor & Destructor Documentation

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::CentralDifferenceImageFunction ( )
protected
template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::~CentralDifferenceImageFunction ( )
inlineprotected

Definition at line 213 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::CentralDifferenceImageFunction ( const Self )
private

Member Function Documentation

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual::itk::LightObject::Pointer itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::CreateAnother ( void  ) const
virtual

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<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual OutputType itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::Evaluate ( const PointType point) const
virtual

Evalulate the image derivative by central differencing at non-integer point.

No bounds checking is done. The point is assumed to lie within the image buffer. If not, 0 is returned for the derivative without any error return, because of bounds-checking performed on the neighboring points.

If point lies on a boundary in a given dimension, 0 is returned for that dimension. Note that points are centered on the voxel.

ImageFunction::IsInsideBuffer() can be used to check bounds before calling the method.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual OutputType itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::EvaluateAtContinuousIndex ( const ContinuousIndexType cindex) const
virtual

Evalulate the image derivative by central differencing at non-integer index.

No bounds checking is done. The point is assumed to lie within the image buffer.

If cindex lies on a boundary in a given dimension, 0 is returned for that dimension.

ImageFunction::IsInsideBuffer() can be used to check bounds before calling the method.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
template<class Type >
void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::EvaluateAtContinuousIndexSpecialized ( const ContinuousIndexType index,
OutputType derivative,
OutputTypeSpecializationStructType< OutputType  
) const
inlineprivate

Specialized versions of EvaluteAtContinuousIndex() method to handle scalar or vector pixel types.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
template<class Type >
void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::EvaluateAtContinuousIndexSpecialized ( const ContinuousIndexType index,
OutputType derivative,
OutputTypeSpecializationStructType< Type >   
) const
inlineprivate

Specialized versions of EvaluteAtContinuousIndex() method to handle scalar or vector pixel types.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual OutputType itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::EvaluateAtIndex ( const IndexType index) const
virtual

Evalulate the image derivative by central differencing at specified index.

No bounds checking is done. The point is assumed to lie within the image buffer.

If index lies on a boundary in a given dimension, 0 is returned for that dimension.

ImageFunction::IsInsideBuffer() can be used to check bounds before calling the method.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
template<class Type >
void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::EvaluateAtIndexSpecialized ( const IndexType index,
OutputType derivative,
OutputTypeSpecializationStructType< OutputType  
) const
inlineprivate

Specialized versions of EvaluteAtIndex() method to handle scalar or vector pixel types.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
template<class Type >
void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::EvaluateAtIndexSpecialized ( const IndexType index,
OutputType derivative,
OutputTypeSpecializationStructType< Type >   
) const
inlineprivate

Specialized versions of EvaluteAtIndex() method to handle scalar or vector pixel types.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
template<class Type >
void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::EvaluateSpecialized ( const PointType point,
OutputType derivative,
OutputTypeSpecializationStructType< OutputType  
) const
private

Specialized versions of Evalute() method to handle scalar or vector pixel types.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
template<class Type >
void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::EvaluateSpecialized ( const PointType point,
OutputType derivative,
OutputTypeSpecializationStructType< Type >   
) const
private

Specialized versions of Evalute() method to handle scalar or vector pixel types.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual const InterpolatorType* itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::GetInterpolator ( )
virtual

Get the interpolator.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual const char* itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::GetNameOfClass ( ) const
virtual

Run-time type information (and related methods).

Reimplemented from itk::ImageFunction< TInputImage, TOutputType, TCoordRep >.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual bool itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::GetUseImageDirection ( ) const
virtual

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 coordinate system of physical space. The difference is whether we take into account the image Direction or not. For EvaluateAtIndex and EvaluateAtContinuousIndex, 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. For Evaluate, the opposite is true: the flag OFF will ignore the image direction and will result in an extra matrix multiplication compared to the amount of computation performed when the flag is ON. The default value of this flag is On.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
static Pointer itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::New ( )
static

Method for creation through the object factory.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::operator= ( const Self )
private
template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::PrintSelf ( std::ostream &  os,
Indent  indent 
) const
protectedvirtual

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 itk::Object.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::SetInputImage ( const TInputImage *  inputData)
virtual

Set the input image. This must be set by the user.

Reimplemented from itk::ImageFunction< TInputImage, TOutputType, TCoordRep >.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::SetInterpolator ( InterpolatorType interpolator)
virtual

Set interpolator. The interpolator is used in the methods Evaluate and EvaluateAtContinuousIndex.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::SetUseImageDirection ( bool  _arg)
virtual

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 coordinate system of physical space. The difference is whether we take into account the image Direction or not. For EvaluateAtIndex and EvaluateAtContinuousIndex, 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. For Evaluate, the opposite is true: the flag OFF will ignore the image direction and will result in an extra matrix multiplication compared to the amount of computation performed when the flag is ON. The default value of this flag is On.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::UseImageDirectionOff ( )
virtual

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 coordinate system of physical space. The difference is whether we take into account the image Direction or not. For EvaluateAtIndex and EvaluateAtContinuousIndex, 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. For Evaluate, the opposite is true: the flag OFF will ignore the image direction and will result in an extra matrix multiplication compared to the amount of computation performed when the flag is ON. The default value of this flag is On.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
virtual void itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::UseImageDirectionOn ( )
virtual

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 coordinate system of physical space. The difference is whether we take into account the image Direction or not. For EvaluateAtIndex and EvaluateAtContinuousIndex, 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. For Evaluate, the opposite is true: the flag OFF will ignore the image direction and will result in an extra matrix multiplication compared to the amount of computation performed when the flag is ON. The default value of this flag is On.

Member Data Documentation

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
const unsigned int itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::ImageDimension = TInputImage::ImageDimension
static

Dimension underlying input image.

Definition at line 89 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
InterpolatorPointer itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::m_Interpolator
private

Definition at line 255 of file itkCentralDifferenceImageFunction.h.

template<class TInputImage , class TCoordRep = float, class TOutputType = CovariantVector<double, TInputImage::ImageDimension >>
bool itk::CentralDifferenceImageFunction< TInputImage, TCoordRep, TOutputType >::m_UseImageDirection
private

Definition at line 252 of file itkCentralDifferenceImageFunction.h.


The documentation for this class was generated from the following file: