itkNarrowBandImageFilterBase.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 __itkNarrowBandImageFilterBase_h
#define __itkNarrowBandImageFilterBase_h

#include "itkFiniteDifferenceImageFilter.h"
#include "itkMultiThreader.h"
#include "itkNarrowBand.h"
#include "itkBarrier.h"
#include "itkObjectStore.h"

namespace itk
{
template< class TInputImage, class TOutputImage >
class NarrowBandImageFilterBase:
  public FiniteDifferenceImageFilter< TInputImage, TOutputImage >
{
public:

  typedef NarrowBandImageFilterBase                                Self;
  typedef FiniteDifferenceImageFilter< TInputImage, TOutputImage > Superclass;
  typedef SmartPointer< Self >                                     Pointer;
  typedef SmartPointer< const Self >                               ConstPointer;

  itkTypeMacro(NarrowBandImageFilterBase, ImageToImageFilter);

  typedef typename Superclass::InputImageType               InputImageType;
  typedef typename Superclass::OutputImageType              OutputImageType;
  typedef typename Superclass::FiniteDifferenceFunctionType FiniteDifferenceFunctionType;

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

  typedef typename Superclass::PixelType PixelType;

  typedef typename Superclass::TimeStepType TimeStepType;

  typedef typename OutputImageType::IndexType IndexType;

  typedef typename OutputImageType::ValueType ValueType;

  typedef BandNode< IndexType, PixelType > BandNodeType;

  typedef NarrowBand< BandNodeType >          NarrowBandType;
  typedef typename NarrowBandType::Pointer    NarrowBandPointer;
  typedef typename NarrowBandType::RegionType RegionType;
  typedef typename NarrowBandType::Iterator   NarrowBandIterator;

  itkSetMacro(IsoSurfaceValue, ValueType);
  itkGetConstMacro(IsoSurfaceValue, ValueType);

  //  itkGetConstMacro( RMSChange, ValueType);

  void InsertNarrowBandNode(const BandNodeType & node)
  {
    m_NarrowBand->PushBack(node); // add new node
    this->Modified();
  }

  void InsertNarrowBandNode(const IndexType & index)
  {
    BandNodeType tmpnode;

    tmpnode.m_Index = index;
    m_NarrowBand->PushBack(tmpnode);
    this->Modified();
  }

  void InsertNarrowBandNode(const IndexType & index,
                            const PixelType & value,
                            const signed char & nodestate)
  {
    BandNodeType tmpnode;

    tmpnode.m_Data = value;
    tmpnode.m_Index = index;
    tmpnode.m_NodeState = nodestate;

    m_NarrowBand->PushBack(tmpnode);
    this->Modified();
  }

  void SetNarrowBandTotalRadius(const float& val)
  {
    if ( m_NarrowBand->GetTotalRadius() != val )
      {
      m_NarrowBand->SetTotalRadius(val);
      this->Modified();
      }
  }

  float GetNarrowBandTotalRadius() const
  {
    return m_NarrowBand->GetTotalRadius();
  }

  void SetNarrowBandInnerRadius(const float& val)
  {
    if ( m_NarrowBand->GetInnerRadius() != val )
      {
      m_NarrowBand->SetInnerRadius(val);
      this->Modified();
      }
  }

  float GetNarrowBandInnerRadius() const
  {
    return m_NarrowBand->GetInnerRadius();
  }

  virtual void CreateNarrowBand(){}

  virtual void SetNarrowBand(NarrowBandType *ptr)
  {
    if ( m_NarrowBand != ptr )
      {
      m_NarrowBand = ptr;
      this->Modified();
      }
  }

  virtual void CopyInputToOutput();

protected:
  NarrowBandImageFilterBase()
  {
    m_NarrowBand = NarrowBandType::New();
    m_NarrowBand->SetTotalRadius(4);
    m_NarrowBand->SetInnerRadius(2);
    m_ReinitializationFrequency = 6;
    m_IsoSurfaceValue = 0.0;
    m_Step    = 0;
    m_Touched = false;
    m_Barrier = Barrier::New();
  }

  virtual ~NarrowBandImageFilterBase() {}
  void PrintSelf(std::ostream & os, Indent indent) const;

  NarrowBandPointer m_NarrowBand;

  struct ThreadRegionType {

    NarrowBandIterator first;

    NarrowBandIterator last;
  };

  std::vector< RegionType > m_RegionList;

  void GetSplitRegion(const size_t& i, ThreadRegionType & splitRegion);

  virtual void Initialize();

  virtual void InitializeIteration();

  virtual void PostProcessOutput();

  /* This function clears all pixels from the narrow band */
  void ClearNarrowBand();

  void WaitForAll();

  virtual void GenerateData();

  /* Variables to control reinitialization */
  IdentifierType m_ReinitializationFrequency;
  IdentifierType m_Step;

  bool m_Touched;

  std::vector< bool > m_TouchedForThread;

  ValueType m_IsoSurfaceValue;

  typename Barrier::Pointer m_Barrier;

private:
  NarrowBandImageFilterBase(const Self &); //purposely not implemented
  void operator=(const Self &);            //purposely not implemented

  struct NarrowBandImageFilterBaseThreadStruct {
    NarrowBandImageFilterBase *Filter;
    TimeStepType TimeStep;
    std::vector< TimeStepType > TimeStepList;
    std::vector< bool > ValidTimeStepList;
  };

  /* This class does not use AllocateUpdateBuffer to allocate memory for its
   * narrow band. This is taken care of in SetNarrowBand, and InsertNarrowBandNode
   * functions. This function is here for compatability with the
   * FiniteDifferenceSolver framework.
   */
  virtual void AllocateUpdateBuffer() {}

  static ITK_THREAD_RETURN_TYPE IterateThreaderCallback(void *arg);

  virtual void ThreadedIterate(void *arg, ThreadIdType threadId);

  virtual void ThreadedApplyUpdate(const TimeStepType& dt,
                                   const ThreadRegionType & regionToProcess,
                                   ThreadIdType threadId);

  virtual void ApplyUpdate(const TimeStepType&){}

  virtual TimeStepType ThreadedCalculateChange(const ThreadRegionType & regionToProcess,
                                               ThreadIdType threadId);

  virtual TimeStepType CalculateChange() { return 0; }
};
} // end namespace itk

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

#endif