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itkLevenbergMarquardtOptimizer.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkLevenbergMarquardtOptimizer.h,v $
00005   Language:  C++
00006   Date:      $Date: 2007/04/16 10:50:37 $
00007   Version:   $Revision: 1.23 $
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 __itkLevenbergMarquardtOptimizer_h
00018 #define __itkLevenbergMarquardtOptimizer_h
00019 
00020 #include "itkMultipleValuedNonLinearVnlOptimizer.h"
00021 #include "vnl/algo/vnl_levenberg_marquardt.h"
00022 
00023 namespace itk
00024 {
00025   
00031 class ITK_EXPORT LevenbergMarquardtOptimizer : 
00032     public MultipleValuedNonLinearVnlOptimizer
00033 {
00034 public:
00036   typedef LevenbergMarquardtOptimizer           Self;
00037   typedef MultipleValuedNonLinearVnlOptimizer   Superclass;
00038   typedef SmartPointer<Self>                    Pointer;
00039   typedef SmartPointer<const Self>              ConstPointer;
00040 
00042   itkNewMacro(Self);
00043 
00045   itkTypeMacro( LevenbergMarquardtOptimizer, MultipleValuedNonLinearVnlOptimizer );
00046 
00048   typedef   vnl_vector<double>     InternalParametersType;
00049 
00051   typedef   vnl_levenberg_marquardt   InternalOptimizerType;
00052 
00054   vnl_levenberg_marquardt * GetOptimizer(void);
00055 
00057   void StartOptimization( void );
00058 
00060   virtual void SetCostFunction( MultipleValuedCostFunction * costFunction );
00061 
00062   void SetNumberOfIterations(unsigned int iterations);
00063   void SetValueTolerance(double tol);
00064   void SetGradientTolerance(double tol);
00065   void SetEpsilonFunction(double epsilon);
00066 
00068   MeasureType GetValue() const;
00069 
00070 protected:
00071   LevenbergMarquardtOptimizer();
00072   virtual ~LevenbergMarquardtOptimizer();
00073 
00074   typedef Superclass::CostFunctionAdaptorType   CostFunctionAdaptorType;
00075 
00076 private:
00077   LevenbergMarquardtOptimizer(const Self&); //purposely not implemented
00078   void operator=(const Self&); //purposely not implemented
00079   
00080   bool                          m_OptimizerInitialized;
00081   InternalOptimizerType       * m_VnlOptimizer;
00082   unsigned int                  m_NumberOfIterations;
00083   double                        m_ValueTolerance;
00084   double                        m_GradientTolerance;
00085   double                        m_EpsilonFunction;
00086 
00087 };
00088 
00089 } // end namespace itk
00090 
00091 
00092 #endif
00093 

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