itkLabelOverlapMeasuresImageFilter.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 __itkLabelOverlapMeasuresImageFilter_h
#define __itkLabelOverlapMeasuresImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkNumericTraits.h"

#include "itksys/hash_map.hxx"

namespace itk {

template<typename TLabelImage>
class LabelOverlapMeasuresImageFilter :
    public ImageToImageFilter<TLabelImage, TLabelImage>
{
public:
  typedef LabelOverlapMeasuresImageFilter                Self;
  typedef ImageToImageFilter<TLabelImage,TLabelImage>    Superclass;
  typedef SmartPointer<Self>                             Pointer;
  typedef SmartPointer<const Self>                       ConstPointer;

  itkNewMacro( Self );

  itkTypeMacro( LabelOverlapMeasuresImageFilter, ImageToImageFilter );

  typedef TLabelImage                                   LabelImageType;
  typedef typename TLabelImage::Pointer                 LabelImagePointer;
  typedef typename TLabelImage::ConstPointer            LabelImageConstPointer;

  typedef typename TLabelImage::RegionType              RegionType;
  typedef typename TLabelImage::SizeType                SizeType;
  typedef typename TLabelImage::IndexType               IndexType;

  typedef typename TLabelImage::PixelType               LabelType;

  typedef typename NumericTraits<LabelType>::RealType RealType;

  class LabelSetMeasures
  {
  public:
    // default constructor
    LabelSetMeasures()
    {
      m_Source = 0;
      m_Target = 0;
      m_Union = 0;
      m_Intersection = 0;
      m_SourceComplement = 0;
      m_TargetComplement = 0;
    }

  // added for completeness
    LabelSetMeasures& operator=( const LabelSetMeasures& l )
    {
      if(this != &l)
        {
        m_Source = l.m_Source;
        m_Target = l.m_Target;
        m_Union = l.m_Union;
        m_Intersection = l.m_Intersection;
        m_SourceComplement = l.m_SourceComplement;
        m_TargetComplement = l.m_TargetComplement;
        }
      return *this;
    }

    unsigned long m_Source;
    unsigned long m_Target;
    unsigned long m_Union;
    unsigned long m_Intersection;
    unsigned long m_SourceComplement;
    unsigned long m_TargetComplement;
    };

  typedef itksys::hash_map<LabelType, LabelSetMeasures> MapType;
  typedef typename MapType::iterator                    MapIterator;
  typedef typename MapType::const_iterator              MapConstIterator;

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

  void SetSourceImage( const LabelImageType * image )
  { this->SetNthInput( 0, const_cast<LabelImageType *>( image ) ); }

  void SetTargetImage( const LabelImageType * image )
  { this->SetNthInput( 1, const_cast<LabelImageType *>( image ) ); }

  const LabelImageType * GetSourceImage( void )
  { return this->GetInput( 0 ); }

  const LabelImageType * GetTargetImage( void )
  { return this->GetInput( 1 ); }

  MapType GetLabelSetMeasures()
  { return this->m_LabelSetMeasures; }

  RealType GetTotalOverlap();
  RealType GetUnionOverlap();
  RealType GetMeanOverlap();
  RealType GetVolumeSimilarity();
  RealType GetFalseNegativeError();
  RealType GetFalsePositiveError();

  RealType GetTargetOverlap( LabelType );
  RealType GetUnionOverlap( LabelType );
  RealType GetMeanOverlap( LabelType );
  RealType GetVolumeSimilarity( LabelType );
  RealType GetFalseNegativeError( LabelType );
  RealType GetFalsePositiveError( LabelType );

  RealType GetJaccardCoefficient()
  { return this->GetUnionOverlap(); }
  RealType GetJaccardCoefficient( LabelType label )
  { return this->GetUnionOverlap( label ); }
  RealType GetDiceCoefficient()
  { return this->GetMeanOverlap(); }
  RealType GetDiceCoefficient( LabelType label )
  { return this->GetMeanOverlap( label ); }


#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
  itkConceptMacro( Input1HasNumericTraitsCheck,
                   ( Concept::HasNumericTraits<LabelType> ) );
  // End concept checking
#endif

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

  void AllocateOutputs();

  void BeforeThreadedGenerateData();

  void AfterThreadedGenerateData();

  void ThreadedGenerateData( const RegionType&, ThreadIdType );

  // Override since the filter produces all of its output
  void EnlargeOutputRequestedRegion( DataObject *data );

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

  std::vector<MapType> m_LabelSetMeasuresPerThread;
  MapType              m_LabelSetMeasures;
}; // end of class

} // end namespace itk

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

#endif