itkAnchorOpenCloseLine.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkAnchorOpenCloseLine.h,v $
  Language:  C++
  Date:      $Date: 2008-10-20 16:32:08 $
  Version:   $Revision: 1.2 $

  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 __itkAnchorOpenCloseLine_h
#define __itkAnchorOpenCloseLine_h

#include "itkAnchorHistogram.h"

//#define RAWHIST

namespace itk {


template<class TInputPix, class THistogramCompare,
         class TFunction1, class TFunction2>
class ITK_EXPORT AnchorOpenCloseLine
{
public:

  typedef TInputPix InputImagePixelType;
  AnchorOpenCloseLine();
  ~AnchorOpenCloseLine()
    {
    delete m_Histo;
    }
  void PrintSelf(std::ostream& os, Indent indent) const;

  void DoLine(InputImagePixelType * buffer, unsigned bufflength);

  void SetSize(unsigned int size)
    {
    m_Size = size;
    }

private:
  unsigned int m_Size;
  TFunction1   m_TF1;
  TFunction2   m_TF2;

  typedef MorphologyHistogram<InputImagePixelType>                      Histogram;
  typedef MorphologyHistogramVec<InputImagePixelType,THistogramCompare> VHistogram;
  typedef MorphologyHistogramMap<InputImagePixelType,THistogramCompare> MHistogram;

  bool StartLine(InputImagePixelType * buffer,
                 InputImagePixelType &Extreme,
                 Histogram &histo,
                 unsigned &outLeftP,
                 unsigned &outRightP, 
                 unsigned bufflength);

  void FinishLine(InputImagePixelType * buffer,
                  InputImagePixelType &Extreme,
                  unsigned &outLeftP,
                  unsigned &outRightP, 
                  unsigned bufflength);

  bool UseVectorBasedHistogram()
    {
    // bool, short and char are acceptable for vector based algorithm: they do not require
    // too much memory. Other types are not usable with that algorithm
    return typeid(InputImagePixelType) == typeid(unsigned char)
        || typeid(InputImagePixelType) == typeid(signed char)
        || typeid(InputImagePixelType) == typeid(unsigned short)
        || typeid(InputImagePixelType) == typeid(signed short)
        || typeid(InputImagePixelType) == typeid(bool);
    }

  Histogram * m_Histo;

}; // end of class


} // end namespace itk


#ifndef ITK_MANUAL_INSTANTIATION
#include "itkAnchorOpenCloseLine.txx"
#endif

#endif