ITK  4.2.0
Insight Segmentation and Registration Toolkit
Public Types | Public Member Functions | Static Public Member Functions | Static Public Attributes | Protected Member Functions | Private Attributes
itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput > Class Template Reference
Module ITKReview

#include <itkDiscreteHessianGaussianImageFunction.h>

+ Inheritance diagram for itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >:
+ Collaboration diagram for itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >:

List of all members.

Public Types

typedef SmartPointer< const Self > ConstPointer
typedef
Superclass::ContinuousIndexType 		ContinuousIndexType
typedef FixedArray
< GaussianDerivativeOperatorType,
3 *itkGetStaticConstMacro(ImageDimension2) > 		GaussianDerivativeOperatorArrayType
typedef
itk::GaussianDerivativeOperator
< TOutput,
itkGetStaticConstMacro(ImageDimension2) > 		GaussianDerivativeOperatorType
typedef Superclass::IndexType IndexType
typedef Superclass::IndexValueType IndexValueType
typedef Superclass::InputImageType InputImageType
typedef Superclass::InputPixelType InputPixelType
enum  InterpolationModeType {
  NearestNeighbourInterpolation,
  LinearInterpolation
}
typedef FixedArray< KernelType,
itkGetStaticConstMacro(ImageDimension2)*(itkGetStaticConstMacro(ImageDimension2)+1)/2 > 		KernelArrayType
typedef Neighborhood< TOutput,
itkGetStaticConstMacro(ImageDimension2) > 		KernelType
typedef
OperatorImageFunctionType::Pointer 		OperatorImageFunctionPointer
typedef
NeighborhoodOperatorImageFunction
< InputImageType, TOutput > 		OperatorImageFunctionType
typedef Superclass::OutputType OutputType
typedef SmartPointer< Self > Pointer
typedef Superclass::PointType PointType
typedef
DiscreteHessianGaussianImageFunction 		Self
typedef ImageFunction
< TInputImage,
SymmetricSecondRankTensor
< TOutput,::itk::GetImageDimension
< TInputImage >
::ImageDimension >, TOutput > 		Superclass
typedef
SymmetricSecondRankTensor
< TOutput,::itk::GetImageDimension
< TInputImage >
::ImageDimension > 		TensorType
typedef FixedArray< double,
itkGetStaticConstMacro(ImageDimension2) > 		VarianceArrayType
- Public Types inherited from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >
typedef TOutput CoordRepType
typedef
InputImageType::ConstPointer 		InputImageConstPointer
- Public Types inherited from itk::FunctionBase< Point< TOutput, TInputImage::ImageDimension >, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension > >
typedef Point< TOutput,
TInputImage::ImageDimension > 		InputType
- Public Types inherited from itk::Object
- Public Types inherited from itk::LightObject

Public Member Functions

virtual ::itk::LightObject::Pointer CreateAnother (void) const
virtual OutputType Evaluate (const PointType &point) const
virtual OutputType EvaluateAtContinuousIndex (const ContinuousIndexType &index) const
virtual OutputType EvaluateAtIndex (const IndexType &index) const
virtual const char * GetNameOfClass () const
virtual void Initialize ()
virtual void SetInputImage (const InputImageType *ptr)
void SetSigma (const double sigma)
virtual void SetVariance (VarianceArrayType _arg)
virtual const VarianceArrayType GetVariance () const
virtual void SetVariance (double data[])
virtual void SetVariance (double variance)
virtual void SetMaximumError (double _arg)
virtual double GetMaximumError () const
virtual void SetNormalizeAcrossScale (bool _arg)
virtual bool GetNormalizeAcrossScale () const
virtual void NormalizeAcrossScaleOn ()
virtual void NormalizeAcrossScaleOff ()
virtual void SetUseImageSpacing (bool _arg)
virtual bool GetUseImageSpacing () const
virtual void UseImageSpacingOn ()
virtual void UseImageSpacingOff ()
virtual void SetMaximumKernelWidth (unsigned int _arg)
virtual unsigned int GetMaximumKernelWidth () const
virtual void SetInterpolationMode (InterpolationModeType _arg)
virtual InterpolationModeType GetInterpolationMode () const
- Public Member Functions inherited from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >
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
SymmetricSecondRankTensor
< TOutput,::itk::GetImageDimension
< TInputImage >
::ImageDimension > 		Evaluate (const PointType &point) const =0
virtual
SymmetricSecondRankTensor
< TOutput,::itk::GetImageDimension
< TInputImage >
::ImageDimension > 		EvaluateAtContinuousIndex (const ContinuousIndexType &index) const =0
virtual
SymmetricSecondRankTensor
< TOutput,::itk::GetImageDimension
< TInputImage >
::ImageDimension > 		EvaluateAtIndex (const IndexType &index) const =0
virtual const ContinuousIndexType & GetEndContinuousIndex ()
virtual const IndexType & GetEndIndex ()
const InputImageType * GetInputImage () const
virtual const ContinuousIndexType & GetStartContinuousIndex ()
virtual const IndexType & GetStartIndex ()
virtual void SetInputImage (const InputImageType *ptr)
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 ImageDimension2 = InputImageType::ImageDimension
- Static Public Attributes inherited from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >
static const unsigned int ImageDimension

Protected Member Functions

 DiscreteHessianGaussianImageFunction ()
 DiscreteHessianGaussianImageFunction (const Self &)
void operator= (const Self &)
void PrintSelf (std::ostream &os, Indent indent) const
void RecomputeGaussianKernel ()
 ~DiscreteHessianGaussianImageFunction ()
- Protected Member Functions inherited from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >
 ImageFunction ()
 ~ImageFunction ()
- Protected Member Functions inherited from itk::FunctionBase< Point< TOutput, TInputImage::ImageDimension >, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension > >
 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 Attributes

InterpolationModeType m_InterpolationMode
KernelArrayType m_KernelArray
double m_MaximumError
unsigned int m_MaximumKernelWidth
bool m_NormalizeAcrossScale
GaussianDerivativeOperatorArrayType m_OperatorArray
OperatorImageFunctionPointer m_OperatorImageFunction
bool m_UseImageSpacing
VarianceArrayType m_Variance

Additional Inherited Members

- Protected Attributes inherited from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >
ContinuousIndexType m_EndContinuousIndex
IndexType m_EndIndex
InputImageConstPointer m_Image
ContinuousIndexType m_StartContinuousIndex
IndexType m_StartIndex

Detailed Description

template<class TInputImage, class TOutput = double>
class itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >

Compute the Hessian Gaussian of an image at a specific location in space by calculating discrete second-order gaussian derivatives. This class is templated over the input image type.

The Initialize() method must be called after setting the parameters and before evaluating the function.

Author:
Ivan Macia, VICOMTech, Spain, http://www.vicomtech.es

This implementation was taken from the Insight Journal paper: http://hdl.handle.net/1926/1290

See also:
NeighborhoodOperator
ImageFunction

Definition at line 46 of file itkDiscreteHessianGaussianImageFunction.h.

Member Typedef Documentation

template<class TInputImage , class TOutput = double>
typedef SmartPointer< const Self > itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::ConstPointer

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 63 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef Superclass::ContinuousIndexType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::ContinuousIndexType

ContinuousIndex Type.

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 76 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef FixedArray< GaussianDerivativeOperatorType, 3 *itkGetStaticConstMacro(ImageDimension2) > itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::GaussianDerivativeOperatorArrayType

Array to store gaussian derivative operators from zero to second order (3*ImageDimension operators)

Definition at line 97 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef itk::GaussianDerivativeOperator< TOutput, itkGetStaticConstMacro(ImageDimension2) > itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::GaussianDerivativeOperatorType

Definition at line 92 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef Superclass::IndexType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::IndexType

Index Type.

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 74 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef Superclass::IndexValueType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::IndexValueType

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 75 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef Superclass::InputImageType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::InputImageType

Image dependent types

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 69 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef Superclass::InputPixelType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::InputPixelType

InputPixel typedef support

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 73 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef FixedArray< KernelType, itkGetStaticConstMacro(ImageDimension2) * ( itkGetStaticConstMacro(ImageDimension2) + 1 ) / 2 > itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::KernelArrayType

Array to store precomputed N-dimensional kernels for the hessian components

Definition at line 104 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef Neighborhood< TOutput, itkGetStaticConstMacro(ImageDimension2) > itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::KernelType

Definition at line 99 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef OperatorImageFunctionType::Pointer itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::OperatorImageFunctionPointer

Definition at line 110 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef NeighborhoodOperatorImageFunction< InputImageType, TOutput > itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::OperatorImageFunctionType

Image function that performs convolution with the neighborhood operator

Definition at line 109 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef Superclass::OutputType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::OutputType

OutputType typedef support.

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 86 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef SmartPointer< Self > itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::Pointer

Smart pointer typedef support

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 62 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef Superclass::PointType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::PointType

Point Type.

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 77 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef DiscreteHessianGaussianImageFunction itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::Self

Standard "Self" typedef

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 54 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput, ::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput > itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::Superclass

Standard "Superclass" typedef

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 59 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef SymmetricSecondRankTensor< TOutput, ::itk::GetImageDimension< TInputImage >::ImageDimension > itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::TensorType

Output type

Definition at line 85 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
typedef FixedArray< double, itkGetStaticConstMacro(ImageDimension2) > itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::VarianceArrayType

Definition at line 88 of file itkDiscreteHessianGaussianImageFunction.h.

Member Enumeration Documentation

template<class TInputImage , class TOutput = double>
enum itk::DiscreteHessianGaussianImageFunction::InterpolationModeType

Interpolation modes

Enumerator:
NearestNeighbourInterpolation 
LinearInterpolation 

Definition at line 113 of file itkDiscreteHessianGaussianImageFunction.h.

Constructor & Destructor Documentation

template<class TInputImage , class TOutput = double>
itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::DiscreteHessianGaussianImageFunction ( )
protected
template<class TInputImage , class TOutput = double>
itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::DiscreteHessianGaussianImageFunction ( const Self &  )
inlineprotected

Definition at line 198 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::~DiscreteHessianGaussianImageFunction ( )
inlineprotected

Definition at line 200 of file itkDiscreteHessianGaussianImageFunction.h.

Member Function Documentation

template<class TInputImage , class TOutput = double>
virtual::itk::LightObject::Pointer itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::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 TOutput = double>
virtual OutputType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::Evaluate ( const PointType &  point) const
virtual

Evalutate the in the given dimension at specified point

template<class TInputImage , class TOutput = double>
virtual OutputType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::EvaluateAtContinuousIndex ( const ContinuousIndexType &  index) const
virtual

Evaluate the function at specified ContinousIndex position

template<class TInputImage , class TOutput = double>
virtual OutputType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::EvaluateAtIndex ( const IndexType &  index) const
virtual

Evaluate the function at specified Index position

template<class TInputImage , class TOutput = double>
virtual InterpolationModeType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::GetInterpolationMode ( ) const
virtual

Set/Get the interpolation mode.

template<class TInputImage , class TOutput = double>
virtual double itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::GetMaximumError ( ) const
virtual

Set/Get the desired maximum error of the gaussian approximation. Maximum error is the difference between the area under the discrete Gaussian curve and the area under the continuous Gaussian. Maximum error affects the Gaussian operator size. The value is clamped between 0.00001 and 0.99999.

template<class TInputImage , class TOutput = double>
virtual unsigned int itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::GetMaximumKernelWidth ( ) const
virtual

Set/Get a limit for growth of the kernel. Small maximum error values with large variances will yield very large kernel sizes. This value can be used to truncate a kernel in such instances. A warning will be given on truncation of the kernel.

template<class TInputImage , class TOutput = double>
virtual const char* itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::GetNameOfClass ( ) const
virtual

Run-time type information (and related methods)

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

template<class TInputImage , class TOutput = double>
virtual bool itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::GetNormalizeAcrossScale ( ) const
virtual

Set/Get the flag for calculating scale-space normalized derivatives. Normalized derivatives are obtained multiplying by the scale parameter t.

template<class TInputImage , class TOutput = double>
virtual bool itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::GetUseImageSpacing ( ) const
virtual

Set/Get the flag for using image spacing when calculating derivatives.

template<class TInputImage , class TOutput = double>
virtual const VarianceArrayType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::GetVariance ( ) const
virtual

Set/Get the variance for the discrete Gaussian kernel. Sets the variance for individual dimensions. The default is 0.0 in each dimension. If UseImageSpacing is true, the units are the physical units of your image. If UseImageSpacing is false then the units are pixels.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::Initialize ( void  )
inlinevirtual

Initialize the Gaussian kernel. Call this method before evaluating the function. This method MUST be called after any changes to function parameters.

Definition at line 194 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
static Pointer itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::New ( )
static

Method for creation through the object factory

Reimplemented from itk::Object.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::NormalizeAcrossScaleOff ( )
virtual

Set/Get the flag for calculating scale-space normalized derivatives. Normalized derivatives are obtained multiplying by the scale parameter t.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::NormalizeAcrossScaleOn ( )
virtual

Set/Get the flag for calculating scale-space normalized derivatives. Normalized derivatives are obtained multiplying by the scale parameter t.

template<class TInputImage , class TOutput = double>
void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::operator= ( const Self &  )
inlineprotected

Mutex lock to protect modification to the reference count

Reimplemented from itk::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

Definition at line 202 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::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::ImageFunction< TInputImage, SymmetricSecondRankTensor< TOutput,::itk::GetImageDimension< TInputImage >::ImageDimension >, TOutput >.

template<class TInputImage , class TOutput = double>
void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::RecomputeGaussianKernel ( )
protected
template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::SetInputImage ( const InputImageType *  ptr)
virtual

Set the input image.

Warning:
this method caches BufferedRegion information. If the BufferedRegion has changed, user must call SetInputImage again to update cached values.
template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::SetInterpolationMode ( InterpolationModeType  _arg)
virtual

Set/Get the interpolation mode.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::SetMaximumError ( double  _arg)
virtual

Set/Get the desired maximum error of the gaussian approximation. Maximum error is the difference between the area under the discrete Gaussian curve and the area under the continuous Gaussian. Maximum error affects the Gaussian operator size. The value is clamped between 0.00001 and 0.99999.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::SetMaximumKernelWidth ( unsigned int  _arg)
virtual

Set/Get a limit for growth of the kernel. Small maximum error values with large variances will yield very large kernel sizes. This value can be used to truncate a kernel in such instances. A warning will be given on truncation of the kernel.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::SetNormalizeAcrossScale ( bool  _arg)
virtual

Set/Get the flag for calculating scale-space normalized derivatives. Normalized derivatives are obtained multiplying by the scale parameter t.

template<class TInputImage , class TOutput = double>
void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::SetSigma ( const double  sigma)
inline

Convenience method for setting the variance through the standard deviation

Definition at line 145 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::SetUseImageSpacing ( bool  _arg)
virtual

Set/Get the flag for using image spacing when calculating derivatives.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::SetVariance ( VarianceArrayType  _arg)
virtual

Set/Get the variance for the discrete Gaussian kernel. Sets the variance for individual dimensions. The default is 0.0 in each dimension. If UseImageSpacing is true, the units are the physical units of your image. If UseImageSpacing is false then the units are pixels.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::SetVariance ( double  data[])
virtual

Set/Get the variance for the discrete Gaussian kernel. Sets the variance for individual dimensions. The default is 0.0 in each dimension. If UseImageSpacing is true, the units are the physical units of your image. If UseImageSpacing is false then the units are pixels.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::SetVariance ( double  variance)
inlinevirtual

Convenience method for setting the variance for all dimensions

Definition at line 136 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::UseImageSpacingOff ( )
virtual

Set/Get the flag for using image spacing when calculating derivatives.

template<class TInputImage , class TOutput = double>
virtual void itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::UseImageSpacingOn ( )
virtual

Set/Get the flag for using image spacing when calculating derivatives.

Member Data Documentation

template<class TInputImage , class TOutput = double>
const unsigned int itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::ImageDimension2 = InputImageType::ImageDimension
static

Dimension of the underlying image

Definition at line 81 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
InterpolationModeType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::m_InterpolationMode
private

Interpolation mode

Definition at line 242 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
KernelArrayType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::m_KernelArray
private

Array of N-dimensional kernels which are the result of convolving the operators for calculating hessian matrix derivatives

Definition at line 230 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
double itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::m_MaximumError
private

Difference between the areas under the curves of the continuous and discrete Gaussian functions

Definition at line 214 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
unsigned int itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::m_MaximumKernelWidth
private

Maximum kernel size allowed. This value is used to truncate a kernel that has grown too large. A warning is given when the specified maximum error causes the kernel to exceed this size

Definition at line 219 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
bool itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::m_NormalizeAcrossScale
private

Flag for scale-space normalization of derivatives

Definition at line 236 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
GaussianDerivativeOperatorArrayType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::m_OperatorArray
mutableprivate

Array of derivative operators, one for each dimension and order. First N zero-order operators are stored, then N first-order and then N second-order making 3*N operators altogether where N=ImageDimension.

Definition at line 225 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
OperatorImageFunctionPointer itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::m_OperatorImageFunction
private

OperatorImageFunction

Definition at line 233 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
bool itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::m_UseImageSpacing
private

Flag to indicate whether to use image spacing

Definition at line 239 of file itkDiscreteHessianGaussianImageFunction.h.

template<class TInputImage , class TOutput = double>
VarianceArrayType itk::DiscreteHessianGaussianImageFunction< TInputImage, TOutput >::m_Variance
private

Desired variance of the discrete Gaussian function

Definition at line 210 of file itkDiscreteHessianGaussianImageFunction.h.

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