cmtkTypedArraySimilarity.h

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/*
//
//  Copyright 2004-2010 SRI International
//
//  Copyright 1997-2009 Torsten Rohlfing
//
//  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 __cmtkTypedArraySimilarity_h_included_
#define __cmtkTypedArraySimilarity_h_included_

#include <cmtkconfig.h>

#include <Base/cmtkTypedArray.h>
#include <Base/cmtkFunctional.h>

#include <Registration/cmtkTypedArraySimilarityMemory.h>

#include <vector>

namespace
cmtk
{

class TypedArraySimilarity 
{
public:
  typedef enum {
    MI = 0, 
    NMI = 1,
    CR = 2,
    CC = 3,
    MSD = 4,
    PSNR = 5,
    DAE = 6
  } ID;

  typedef Functional::ReturnType ReturnType;
  
  static ReturnType GetMutualInformation
  ( const TypedArray* array0, const TypedArray* array1,
    TypedArraySimilarityMemory *const memory = NULL );
  
  static ReturnType GetMutualInformation( const std::vector<const TypedArray*>& data0, const std::vector<const TypedArray*>& data1, const bool normalized = false );
  
  static ReturnType GetNormalizedMutualInformation( const std::vector<const TypedArray*>& data0, const std::vector<const TypedArray*>& data1 )
  {
    return GetMutualInformation( data0, data1, true /*normalized*/ );
  }
  
  static ReturnType GetCorrelationRatio( const TypedArray* array0, const TypedArray* array1 );

  static ReturnType GetNormalizedMutualInformation( const TypedArray* array0, const TypedArray* array1, TypedArraySimilarityMemory *const memory = NULL );

  static ReturnType GetMinusMeanSquaredDifference( const TypedArray* array0, const TypedArray* array1 );

  static ReturnType GetPeakSignalToNoiseRatio( const TypedArray* data, const TypedArray* signal );

  static ReturnType GetCrossCorrelation( const TypedArray* array0, const TypedArray* array1 );

  static TypedArray::SmartPtr GetDifferenceArray( const TypedArray* array0, const TypedArray* array1, Types::DataItem &scaleFactor );

  static ReturnType GetDifferenceArrayEntropy( const TypedArray* array0, const TypedArray* array1, Types::DataItem &scaleFactor );

  static bool CheckArrayDimensions( const TypedArray* array0, const TypedArray* array1 );

  static ReturnType GetOptimalScale( const TypedArray* array0, const TypedArray* array1 );
};

} // namespace

#endif // #ifndef __cmtkTypedArraySimilarity_h_included_