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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkVectorCurvatureNDAnisotropicDiffusionFunction.h
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkVectorCurvatureNDAnisotropicDiffusionFunction_h
#define __itkVectorCurvatureNDAnisotropicDiffusionFunction_h
#include "itkVectorAnisotropicDiffusionFunction.h"
#include "itkNeighborhoodAlgorithm.h"
#include "itkVectorNeighborhoodInnerProduct.h"
#include "itkDerivativeOperator.h"
namespace itk {
/** \class VectorCurvatureNDAnisotropicDiffusionFunction
*
* This class is a simple extension of the
* CurvatureNDAnisotropicDiffusionFunction to pixel types of multiple
* components. Vector components are diffused separately, but diffusion of
* each component is limited by a conductance term which depends on all
* components.
*
* For more information, please see CurvatureNDAnisotropicDiffusionFunction.
*
* \sa CurvatureNDAnisotropicDiffusionFunction
* \sa VectorGradientNDAnisotropicDiffusionFunction
* \sa AnisotropicDiffusionFunction
*/
template <class TImage>
class ITK_EXPORT VectorCurvatureNDAnisotropicDiffusionFunction :
public VectorAnisotropicDiffusionFunction<TImage>
{
public:
/** Standard itk Self & Superclass typedefs */
typedef VectorCurvatureNDAnisotropicDiffusionFunction Self;
typedef VectorAnisotropicDiffusionFunction<TImage> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro( VectorCurvatureNDAnisotropicDiffusionFunction,
VectorAnisotropicDiffusionFunction );
/** Inherit some parameters from the superclass type. */
typedef typename Superclass::ImageType ImageType;
typedef typename Superclass::PixelType PixelType;
typedef typename Superclass::TimeStepType TimeStepType;
typedef typename Superclass::RadiusType RadiusType;
typedef typename Superclass::NeighborhoodType NeighborhoodType;
typedef typename Superclass::FloatOffsetType FloatOffsetType;
typedef typename PixelType::ValueType ScalarValueType;
/** Extract the image and vector dimension. */
itkStaticConstMacro(ImageDimension, unsigned int,
Superclass::ImageDimension);
itkStaticConstMacro(VectorDimension, unsigned int,
Superclass::VectorDimension);
/** Compute the equation value. */
virtual PixelType ComputeUpdate(const NeighborhoodType &neighborhood,
void *globalData,
const FloatOffsetType& offset = FloatOffsetType(0.0)
);
/** This method is called prior to each iteration of the solver. */
virtual void InitializeIteration()
{
m_K = this->GetAverageGradientMagnitudeSquared() * this->GetConductanceParameter() *
this->GetConductanceParameter() * -2.0f;
}
protected:
VectorCurvatureNDAnisotropicDiffusionFunction();
~VectorCurvatureNDAnisotropicDiffusionFunction() {}
void PrintSelf(std::ostream& os, Indent indent) const
{ Superclass::PrintSelf(os,indent); }
private:
VectorCurvatureNDAnisotropicDiffusionFunction(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
/** Inner product function. */
VectorNeighborhoodInnerProduct<ImageType> m_InnerProduct;
/** Slices for the ND neighborhood. */
std::slice x_slice[ImageDimension];
std::slice xa_slice[ImageDimension][ImageDimension];
std::slice xd_slice[ImageDimension][ImageDimension];
/** Derivative operator */
DerivativeOperator<ScalarValueType, itkGetStaticConstMacro(ImageDimension)> dx_op;
/** Modified global average gradient magnitude term. */
double m_K;
static double m_MIN_NORM;
unsigned long m_Center;
unsigned long m_Stride[ImageDimension];
};
}// end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkVectorCurvatureNDAnisotropicDiffusionFunction.txx"
#endif
#endif
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