itkLabelPerimeterEstimationCalculator.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkLabelPerimeterEstimationCalculator.h,v $
  Language:  C++
  Date:      $Date: 2009-07-30 18:25:06 $
  Version:   $Revision: 1.1 $

  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 __itkLabelPerimeterEstimationCalculator_h
#define __itkLabelPerimeterEstimationCalculator_h

#include "itkObject.h"

namespace itk {

template<class TInputImage>
class ITK_EXPORT LabelPerimeterEstimationCalculator : 
    public Object
{
public:
  typedef LabelPerimeterEstimationCalculator Self;
  typedef Object                             Superclass;
  typedef SmartPointer<Self>                 Pointer;
  typedef SmartPointer<const Self>           ConstPointer;

  typedef TInputImage                             InputImageType;
  typedef typename InputImageType::Pointer        InputImagePointer;
  typedef typename InputImageType::ConstPointer   InputImageConstPointer;
  typedef typename InputImageType::RegionType     InputImageRegionType;
  typedef typename InputImageType::PixelType      InputImagePixelType;

  typedef typename InputImageType::RegionType     RegionType;
  typedef typename InputImageType::SizeType       SizeType;
  typedef typename InputImageType::IndexType      IndexType;
  
  typedef typename std::map< InputImagePixelType, double > PerimetersType;
  
  itkStaticConstMacro(ImageDimension, unsigned int, TInputImage::ImageDimension);

  itkNewMacro(Self);  

  itkTypeMacro(LabelPerimeterEstimationCalculator, Object);

  itkSetMacro(FullyConnected, bool);
  itkGetConstReferenceMacro(FullyConnected, bool);
  itkBooleanMacro(FullyConnected);

  void SetImage( const InputImageType * img )
    {
    m_Image = img;
    }

  const InputImageType * GetImage() const
    {
    return m_Image;
    }
    
  void Compute();
  
  const PerimetersType & GetPerimeters() const
    {
    return m_Perimeters;
    }
    
  const double & GetPerimeter( const InputImagePixelType & label ) const
    {
    if( m_Perimeters.find( label ) != m_Perimeters.end() )
      {
      return m_Perimeters.find( label )->second;
      }
    itkExceptionMacro( << "Unknown label: " << static_cast<typename NumericTraits<InputImagePixelType>::PrintType>(label) );
    }

  bool HasLabel( const InputImagePixelType & label ) const
    {
    if( m_Perimeters.find( label ) != m_Perimeters.end() )
      {
      return true;
      }
    return false;
    }

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


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

  bool m_FullyConnected;

  const InputImageType * m_Image;
  
  PerimetersType m_Perimeters;

}; // end of class

} // end namespace itk
  
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkLabelPerimeterEstimationCalculator.txx"
#endif

#endif