00001 /*========================================================================= 00002 00003 Program: Insight Segmentation & Registration Toolkit 00004 Module: $RCSfile: itkSingleValuedVnlCostFunctionAdaptor.h,v $ 00005 Language: C++ 00006 Date: $Date: 2007-03-22 21:39:38 $ 00007 Version: $Revision: 1.11 $ 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 __itkSingleValuedVnlCostFunctionAdaptor_h 00018 #define __itkSingleValuedVnlCostFunctionAdaptor_h 00019 00020 #include "itkSingleValuedCostFunction.h" 00021 #include "vnl/vnl_cost_function.h" 00022 00023 00024 namespace itk 00025 { 00026 00036 class SingleValuedVnlCostFunctionAdaptor : 00037 public vnl_cost_function 00038 { 00039 public: 00040 00042 typedef vnl_vector<double> InternalParametersType; 00043 00045 typedef double InternalMeasureType; 00046 00048 typedef vnl_vector<double> InternalDerivativeType; 00049 00051 typedef SingleValuedCostFunction::ParametersType ParametersType; 00052 00054 typedef SingleValuedCostFunction::DerivativeType DerivativeType; 00055 00057 typedef SingleValuedCostFunction::MeasureType MeasureType; 00058 00060 typedef Array<double> ScalesType; 00061 00063 SingleValuedVnlCostFunctionAdaptor(unsigned int spaceDimension); 00064 00065 00067 void SetCostFunction( SingleValuedCostFunction * costFunction ) 00068 { m_CostFunction = costFunction; } 00069 00071 const SingleValuedCostFunction * GetCostFunction( void ) const 00072 { return m_CostFunction; } 00073 00075 virtual InternalMeasureType f( const InternalParametersType & inparameters ); 00076 00078 virtual void gradf(const InternalParametersType & inparameters, 00079 InternalDerivativeType & gradient ); 00080 00082 virtual void compute(const InternalParametersType & x, 00083 InternalMeasureType * f, 00084 InternalDerivativeType * g ); 00085 00087 void ConvertExternalToInternalGradient( 00088 const DerivativeType & input, 00089 InternalDerivativeType & output ) const; 00090 00092 void SetScales(const ScalesType & scales); 00093 00102 void SetNegateCostFunction( bool value ); 00103 bool GetNegateCostFunction() const; 00104 void NegateCostFunctionOn() { m_NegateCostFunction = true; } 00105 void NegateCostFunctionOff() { m_NegateCostFunction = false; } 00107 00112 unsigned long AddObserver(const EventObject & event, Command *) const; 00113 00118 const MeasureType & GetCachedValue() const; 00119 const DerivativeType & GetCachedDerivative() const; 00120 const ParametersType & GetCachedCurrentParameters() const; 00122 00123 protected: 00124 00127 void ReportIteration( const EventObject & event ) const; 00128 00129 private: 00130 00131 SingleValuedCostFunction::Pointer m_CostFunction; 00132 bool m_ScalesInitialized; 00133 ScalesType m_Scales; 00134 bool m_NegateCostFunction; 00135 Object::Pointer m_Reporter; 00136 00137 mutable MeasureType m_CachedValue; 00138 mutable DerivativeType m_CachedDerivative; 00139 mutable ParametersType m_CachedCurrentParameters; 00140 00141 }; // end of Class CostFunction 00142 00143 00144 } // end namespace itk 00145 00146 00147 #endif 00148