cmtkCongealingFunctional.h

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/*
//
//  Copyright 1997-2009 Torsten Rohlfing
//
//  Copyright 2004-2011 SRI International
//
//  This file is part of the Computational Morphometry Toolkit.
//
//  http://www.nitrc.org/projects/cmtk/
//
//  The Computational Morphometry Toolkit is free software: you can
//  redistribute it and/or modify it under the terms of the GNU General Public
//  License as published by the Free Software Foundation, either version 3 of
//  the License, or (at your option) any later version.
//
//  The Computational Morphometry Toolkit is distributed in the hope that it
//  will be useful, but WITHOUT ANY WARRANTY; without even the implied
//  warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License along
//  with the Computational Morphometry Toolkit.  If not, see
//  <http://www.gnu.org/licenses/>.
//
//  $Revision: 2752 $
//
//  $LastChangedDate: 2011-01-17 11:33:31 -0800 (Mon, 17 Jan 2011) $
//
//  $LastChangedBy: torstenrohlfing $
//
*/

#ifndef __cmtkCongealingFunctional_h_included_
#define __cmtkCongealingFunctional_h_included_

#include <cmtkconfig.h>

#include <Registration/cmtkGroupwiseRegistrationFunctionalXformTemplate.h>

#include <System/cmtkSmartPtr.h>
#include <System/cmtkThreads.h>

#include <Base/cmtkUniformVolume.h>
#include <Base/cmtkXform.h>
#include <Base/cmtkHistogram.h>

#include <vector>

namespace
cmtk
{


template<class TXform>
class CongealingFunctional : 
  public GroupwiseRegistrationFunctionalXformTemplate<TXform>
{
public:
  typedef GroupwiseRegistrationFunctionalXformTemplate<TXform> Superclass;

  typedef CongealingFunctional<TXform> Self;

  typedef SmartPointer<Self> SmartPtr;

  typedef TXform XformType;

  typedef typename XformType::SmartPtr XformPointer;

  typedef unsigned int HistogramBinType;

  typedef Histogram<HistogramBinType> HistogramType;

  CongealingFunctional();

  virtual ~CongealingFunctional();

  virtual void SetNumberOfHistogramBins( const size_t numberOfHistogramBins );

  virtual void SetTemplateGrid( UniformVolume::SmartPtr& templateGrid , 
                                const int downsample = 1 , 
                                const bool useTemplateData = false  );
  
  virtual typename Self::ReturnType Evaluate();
  
protected:
  std::vector<byte> m_StandardDeviationByPixel;

#ifdef CMTK_BUILD_MPI

  std::vector<byte> m_StandardDeviationByPixelMPI;
#endif

  virtual void UpdateStandardDeviationByPixel();

  bool m_NeedsUpdateStandardDeviationByPixel;

  void CreateGaussianKernels();

  std::vector<HistogramBinType*> m_HistogramKernel;

  std::vector<size_t> m_HistogramKernelRadius;

  std::vector<HistogramType> m_ThreadHistograms;

  virtual bool Wiggle();

private:
  typedef ThreadParameters<Self> ThreadParametersType;

  static void UpdateStandardDeviationByPixelThreadFunc( void *const args, const size_t taskIdx, const size_t taskCnt, const size_t, const size_t );
  
  class EvaluateThreadParameters : 
    public ThreadParametersType
  {
  public:
    double m_Entropy;

    unsigned int m_Count;
  };
  
  static void EvaluateThread( void *const args, const size_t taskIdx, const size_t taskCnt, const size_t threadIdx, const size_t threadCnt );

  static void EvaluateProbabilisticThread( void *const args, const size_t taskIdx, const size_t taskCnt, const size_t threadIdx, const size_t threadCnt );
};


} // namespace cmtk

#endif // #ifndef __cmtkCongealingFunctional_h_included_