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itkSquaredDifferenceErrorFunction.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkSquaredDifferenceErrorFunction.h,v $
00005   Language:  C++
00006   Date:      $Date: 2005/08/02 19:17:37 $
00007   Version:   $Revision: 1.1 $
00008 
00009   Copyright (c) Insight Software Consortium. All rights reserved.
00010   See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
00011 
00012      This software is distributed WITHOUT ANY WARRANTY; without even 
00013      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00014      PURPOSE.  See the above copyright notices for more information.
00015 
00016 =========================================================================*/
00017 #ifndef __itkSquaredDifferenceErrorFunction_h
00018 #define __itkSquaredDifferenceErrorFunction_h
00019 
00020 #include "itkErrorFunctionBase.h"
00021 #include "vnl/vnl_matrix.h"
00022 #include "vnl/vnl_vector.h"
00023 
00024 namespace itk
00025 {
00026 namespace Statistics
00027 {
00028 
00029 template<class TVector, class ScalarType>
00030 class SquaredDifferenceErrorFunction : public ErrorFunctionBase<TVector, ScalarType>
00031 {
00032 public:
00033 
00035   typedef SquaredDifferenceErrorFunction Self;
00036   typedef ErrorFunctionBase<TVector, ScalarType> Superclass;
00037   typedef SmartPointer<Self> Pointer;
00038   typedef SmartPointer<const Self> ConstPointer;
00039   typedef typename Superclass::ErrorVectorType ErrorVectorType;
00040 
00042   itkTypeMacro(SquaredDifferenceErrorFunction, FunctionBase);
00043 
00045   itkNewMacro(Self) ;
00046 
00048   ScalarType Evaluate(const TVector& Errors) const;
00049 
00050   ErrorVectorType EvaluateDerivative(const TVector& Errors) const;
00051 
00052 protected:
00053 
00054   SquaredDifferenceErrorFunction();
00055   ~SquaredDifferenceErrorFunction();
00056   
00058   virtual void PrintSelf( std::ostream& os, Indent indent ) const;
00059 };
00060 
00061 } // end namespace Statistics
00062 } // end namespace itk
00063 
00064 #ifndef ITK_MANUAL_INSTANTIATION
00065   #include "itkSquaredDifferenceErrorFunction.txx"
00066 #endif
00067 
00068 
00069 #endif

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