itkShapePriorSegmentationLevelSetFunction.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef __itkShapePriorSegmentationLevelSetFunction_h
#define __itkShapePriorSegmentationLevelSetFunction_h

#include "itkSegmentationLevelSetFunction.h"
#include "itkShapeSignedDistanceFunction.h"

namespace itk
{
template< class TImageType, class TFeatureImageType = TImageType >
class ITK_EXPORT ShapePriorSegmentationLevelSetFunction:
  public SegmentationLevelSetFunction< TImageType, TFeatureImageType >
{
public:
  typedef ShapePriorSegmentationLevelSetFunction Self;
  typedef SegmentationLevelSetFunction< TImageType, TFeatureImageType >
  Superclass;
  typedef SmartPointer< Self >       Pointer;
  typedef SmartPointer< const Self > ConstPointer;
  typedef TFeatureImageType          FeatureImageType;

  itkNewMacro(Self);

  itkTypeMacro(ShapePriorSegmentationLevelSetFunction, SegmentationLevelSetFunction);

  typedef typename Superclass::ImageType           ImageType;
  typedef typename Superclass::NeighborhoodType    NeighborhoodType;
  typedef typename Superclass::ScalarValueType     ScalarValueType;
  typedef typename Superclass::FeatureScalarType   FeatureScalarType;
  typedef typename Superclass::RadiusType          RadiusType;
  typedef typename Superclass::FloatOffsetType     FloatOffsetType;
  typedef typename Superclass::VectorImageType     VectorImageType;
  typedef typename Superclass::PixelType           PixelType;
  typedef typename Superclass::TimeStepType        TimeStepType;
  typedef typename Superclass::IndexType           IndexType;
  typedef typename Superclass::ContinuousIndexType ContinuousIndexType;

  itkStaticConstMacro(ImageDimension, unsigned int,
                      Superclass::ImageDimension);

  typedef ShapeSignedDistanceFunction< double,
                                       itkGetStaticConstMacro(ImageDimension) > ShapeFunctionType;
  typedef typename ShapeFunctionType::ConstPointer ShapeFunctionPointer;

  void SetShapePriorWeight(const ScalarValueType p)
  { m_ShapePriorWeight = p; }
  ScalarValueType GetShapePriorWeight() const
  { return m_ShapePriorWeight; }

  void SetShapeFunction(const ShapeFunctionType *ptr)
  { m_ShapeFunction = ptr; }
  const ShapeFunctionType * GetShapeFunction() const
  { return m_ShapeFunction; }

  virtual PixelType ComputeUpdate( const NeighborhoodType & neighborhood,
                                   void *globalData,
                                   const FloatOffsetType & = FloatOffsetType(0.0) );

  virtual TimeStepType ComputeGlobalTimeStep(void *globalData) const;

  typedef typename Superclass::GlobalDataStruct GlobalDataStruct;
  struct ShapePriorGlobalDataStruct:public GlobalDataStruct {
    ScalarValueType m_MaxShapePriorChange;
  };

  virtual void * GetGlobalDataPointer() const
  {
    ShapePriorGlobalDataStruct *ans = new ShapePriorGlobalDataStruct();

    ans->m_MaxAdvectionChange   = NumericTraits< ScalarValueType >::Zero;
    ans->m_MaxPropagationChange = NumericTraits< ScalarValueType >::Zero;
    ans->m_MaxCurvatureChange   = NumericTraits< ScalarValueType >::Zero;
    ans->m_MaxShapePriorChange  = NumericTraits< ScalarValueType >::Zero;
    return ans;
  }

  virtual void ReleaseGlobalDataPointer(void *GlobalData) const
  { delete (ShapePriorGlobalDataStruct *)GlobalData; }

protected:
  ShapePriorSegmentationLevelSetFunction();
  virtual ~ShapePriorSegmentationLevelSetFunction() {}

  ShapePriorSegmentationLevelSetFunction(const Self &); //purposely not
                                                        // implemented
  void operator=(const Self &);                         //purposely not
                                                        // implemented

  void PrintSelf(std::ostream & os, Indent indent) const;

private:

  ShapeFunctionPointer m_ShapeFunction;
  ScalarValueType      m_ShapePriorWeight;
};
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkShapePriorSegmentationLevelSetFunction.hxx"
#endif

#endif