cmtkMultiChannelHistogramRegistrationFunctional.h

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/*
//
//  Copyright 1997-2010 Torsten Rohlfing
//
//  Copyright 2004-2010 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: 2398 $
//
//  $LastChangedDate: 2010-10-05 14:54:37 -0700 (Tue, 05 Oct 2010) $
//
//  $LastChangedBy: torstenrohlfing $
//
*/

#ifndef __cmtkMultiChannelHistogramRegistrationFunctional_h_included_
#define __cmtkMultiChannelHistogramRegistrationFunctional_h_included_

#include <cmtkconfig.h>

#include <Registration/cmtkMultiChannelRegistrationFunctional.h>

#include <Base/cmtkHashMapSTL.h>
#include <Base/cmtkUniformVolume.h>
#include <Base/cmtkUniformVolumeInterpolator.h>
#include <Base/cmtkLinearInterpolator.h>

#include <System/cmtkSmartPtr.h>

#include <vector>

namespace
cmtk
{

template<class TDataType = float, 
         class TInterpolator = cmtk::UniformVolumeInterpolator<cmtk::Interpolators::Linear>,
         class THashKeyType = unsigned int, 
         char NBitsPerChannel=6>
class MultiChannelHistogramRegistrationFunctional :
  public MultiChannelRegistrationFunctional<TInterpolator>
{
public:
  static const char m_HistogramBitsPerChannel = NBitsPerChannel;

  typedef MultiChannelHistogramRegistrationFunctional<TDataType,THashKeyType> Self;

  typedef SmartPointer<Self> SmartPtr;

  typedef MultiChannelRegistrationFunctional<TInterpolator> Superclass;

  typedef TDataType DataType;

  typedef THashKeyType HashKeyType;

  virtual void AddReferenceChannel( UniformVolume::SmartPtr& channel );

  virtual void AddFloatingChannel( UniformVolume::SmartPtr& channel );

  virtual void ClearAllChannels();

protected:
  class MetricData
  {
  private:
    typedef MultiChannelHistogramRegistrationFunctional<TDataType,TInterpolator,THashKeyType,NBitsPerChannel> Parent;

    Parent* m_Parent;

  public:
    typedef MetricData Self;

    void Init( Parent *const parent );

    typedef HashMapSTL<HashKeyType, int> HashTableType;

    HashTableType m_JointHash;

    HashTableType m_ReferenceHash;

    HashTableType m_FloatingHash;

    size_t m_TotalNumberOfSamples;

    Self& operator=( const Self& source );

    Self& operator+=( const Self& other );

    Self& operator-=( const Self& other );

    void operator+=( const Types::DataItem* values );

    void operator-=( const Types::DataItem* values );
  };

  MetricData m_MetricData;

  virtual void ContinueMetric( MetricData& metricData, const size_t rindex, const Vector3D& fvector );

  virtual Functional::ReturnType GetMetric( const MetricData& metricData ) const;

private:
  std::vector<TDataType> m_HashKeyScaleRef;

  std::vector<TDataType> m_HashKeyScaleFlt;

  std::vector<TDataType> m_HashKeyOffsRef;

  std::vector<TDataType> m_HashKeyOffsFlt;

  size_t m_HashKeyShiftRef;
};


} // namespace cmtk

#include "cmtkMultiChannelHistogramRegistrationFunctional.txx"
#include "cmtkMultiChannelHistogramRegistrationFunctionalMetricData.txx"

#endif // #ifndef __cmtkMultiChannelHistogramRegistrationFunctional_h_included_