itkFastMarchingImageFilterBase.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 __itkFastMarchingImageFilterBase_h
#define __itkFastMarchingImageFilterBase_h

#include "itkFastMarchingBase.h"
#include "itkImageRegionConstIteratorWithIndex.h"
#include "itkNeighborhoodIterator.h"
#include "itkArray.h"

namespace itk
{
template< class TInput, class TOutput >
class FastMarchingImageFilterBase :
    public FastMarchingBase< TInput, TOutput >
  {
public:
  typedef FastMarchingImageFilterBase          Self;
  typedef FastMarchingBase< TInput, TOutput >  Superclass;
  typedef SmartPointer< Self >                 Pointer;
  typedef SmartPointer< const Self >           ConstPointer;
  typedef typename Superclass::Traits          Traits;

  itkNewMacro(Self);

  itkTypeMacro(FastMarchingImageFilterBase, FastMarchingBase);


  typedef typename Superclass::InputDomainType     InputImageType;
  typedef typename Superclass::InputDomainPointer  InputImagePointer;
  typedef typename Superclass::InputPixelType      InputPixelType;

  typedef typename Superclass::OutputDomainType     OutputImageType;
  typedef typename Superclass::OutputDomainPointer  OutputImagePointer;
  typedef typename Superclass::OutputPixelType      OutputPixelType;
  typedef typename OutputImageType::SpacingType     OutputSpacingType;
  typedef typename OutputImageType::SizeType        OutputSizeType;
  typedef typename OutputImageType::RegionType      OutputRegionType;
  typedef typename OutputImageType::PointType       OutputPointType;
  typedef typename OutputImageType::DirectionType   OutputDirectionType;

  typedef typename Traits::NodeType                 NodeType;
  typedef typename Traits::NodePairType             NodePairType;
  typedef typename Traits::NodePairContainerType    NodePairContainerType;
  typedef typename Traits::NodePairContainerPointer NodePairContainerPointer;
  typedef typename Traits::NodePairContainerConstIterator
    NodePairContainerConstIterator;

  /*
  typedef typename Superclass::ElementIdentifier ElementIdentifier;

  typedef typename Superclass::PriorityQueueElementType PriorityQueueElementType;

  typedef typename Superclass::PriorityQueueType PriorityQueueType;
  typedef typename Superclass::PriorityQueuePointer PriorityQueuePointer;
  */

  typedef typename Superclass::LabelType LabelType;

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

  typedef Image< unsigned char, ImageDimension >  LabelImageType;
  typedef typename LabelImageType::Pointer        LabelImagePointer;

  typedef Image< unsigned int, ImageDimension >
    ConnectedComponentImageType;
  typedef typename ConnectedComponentImageType::Pointer ConnectedComponentImagePointer;

  typedef NeighborhoodIterator<LabelImageType> NeighborhoodIteratorType;
  typedef typename NeighborhoodIteratorType::RadiusType NeighborhoodRadiusType;

  itkGetModifiableObjectMacro(LabelImage, LabelImageType );

  virtual void SetOutputSize(const OutputSizeType & size)
  { m_OutputRegion = size; }
  virtual OutputSizeType GetOutputSize() const
  { return m_OutputRegion.GetSize(); }
  itkSetMacro(OutputRegion, OutputRegionType);
  itkGetConstReferenceMacro(OutputRegion, OutputRegionType);
  itkSetMacro(OutputSpacing, OutputSpacingType);
  itkGetConstReferenceMacro(OutputSpacing, OutputSpacingType);
  itkSetMacro(OutputDirection, OutputDirectionType);
  itkGetConstReferenceMacro(OutputDirection, OutputDirectionType);
  itkSetMacro(OutputOrigin, OutputPointType);
  itkGetConstReferenceMacro(OutputOrigin, OutputPointType);
  itkSetMacro(OverrideOutputInformation, bool);
  itkGetConstReferenceMacro(OverrideOutputInformation, bool);
  itkBooleanMacro(OverrideOutputInformation);

protected:

  FastMarchingImageFilterBase();

  virtual ~FastMarchingImageFilterBase();

  class InternalNodeStructure;

  OutputRegionType  m_BufferedRegion;
  NodeType          m_StartIndex;
  NodeType          m_LastIndex;

  OutputRegionType    m_OutputRegion;
  OutputPointType     m_OutputOrigin;
  OutputSpacingType   m_OutputSpacing;
  OutputDirectionType m_OutputDirection;
  bool                m_OverrideOutputInformation;

  virtual void GenerateOutputInformation();

  virtual void EnlargeOutputRequestedRegion(DataObject *output);

  LabelImagePointer               m_LabelImage;
  ConnectedComponentImagePointer  m_ConnectedComponentImage;

  IdentifierType GetTotalNumberOfNodes() const;

  void SetOutputValue( OutputImageType* oDomain,
                       const NodeType& iNode,
                       const OutputPixelType& iValue );

  const OutputPixelType GetOutputValue( OutputImageType* oImage,
                                  const NodeType& iNode ) const;

  unsigned char
  GetLabelValueForGivenNode( const NodeType& iNode ) const;

  void SetLabelValueForGivenNode( const NodeType& iNode,
                                 const LabelType& iLabel );

  virtual void UpdateNeighbors( OutputImageType* oImage,
                                const NodeType& iNode );

  virtual void UpdateValue( OutputImageType* oImage,
                            const NodeType& iValue );

  bool CheckTopology( OutputImageType* oImage,
                      const NodeType& iNode );
  void InitializeOutput( OutputImageType* oImage );

  void GetInternalNodesUsed( OutputImageType* oImage,
                            const NodeType& iNode,
                            std::vector< InternalNodeStructure >& ioNodesUsed );

  double Solve( OutputImageType* oImage,
               const NodeType& iNode,
               std::vector< InternalNodeStructure >& ioNeighbors ) const;

  // --------------------------------------------------------------------------
  // --------------------------------------------------------------------------

  // Functions/data for the 2-D case
  void InitializeIndices2D();
  bool IsChangeWellComposed2D( const NodeType& ) const;
  bool IsCriticalC1Configuration2D( const std::vector<bool>& ) const;
  bool IsCriticalC2Configuration2D( const std::vector<bool>& ) const;
  bool IsCriticalC3Configuration2D( const std::vector<bool>& ) const;
  bool IsCriticalC4Configuration2D( const std::vector<bool>& ) const;

  Array<unsigned char>  m_RotationIndices[4];
  Array<unsigned char>  m_ReflectionIndices[2];

  // Functions/data for the 3-D case
  void InitializeIndices3D();
  bool IsCriticalC1Configuration3D( const std::vector<bool>& ) const;
  unsigned int IsCriticalC2Configuration3D( const std::vector<bool>& ) const;
  bool IsChangeWellComposed3D( const NodeType& ) const;

  Array<unsigned char>                        m_C1Indices[12];
  Array<unsigned char>                        m_C2Indices[8];

  // Functions for both 2D/3D cases
  bool DoesVoxelChangeViolateWellComposedness( const NodeType& ) const;
  bool DoesVoxelChangeViolateStrictTopology( const NodeType& ) const;

  const InputImageType* m_InputCache;

private:

  FastMarchingImageFilterBase( const Self& );
  void operator = ( const Self& );
  };
}

#include "itkFastMarchingImageFilterBase.hxx"
#endif // __itkFastMarchingImageFilterBase_h