itkConjugateGradientOptimizer.h

Go to the documentation of this file.

/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef __itkConjugateGradientOptimizer_h
#define __itkConjugateGradientOptimizer_h

#include "itkIntTypes.h"
#include "itkSingleValuedNonLinearVnlOptimizer.h"
#include "vnl/algo/vnl_conjugate_gradient.h"

namespace itk
{
class ITK_EXPORT ConjugateGradientOptimizer:
  public SingleValuedNonLinearVnlOptimizer

{
public:
  typedef ConjugateGradientOptimizer        Self;
  typedef SingleValuedNonLinearVnlOptimizer Superclass;
  typedef SmartPointer< Self >              Pointer;
  typedef SmartPointer< const Self >        ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(ConjugateGradientOptimizer, SingleValuedNonLinearOptimizer);

  typedef   vnl_vector< double > InternalParametersType;

  typedef   vnl_conjugate_gradient InternalOptimizerType;

  vnl_conjugate_gradient * GetOptimizer(void);

  void StartOptimization(void);

  virtual void SetCostFunction(SingleValuedCostFunction *costFunction);

  SizeValueType GetNumberOfIterations(void) const;

  SizeValueType GetCurrentIteration(void) const;

  MeasureType GetValue() const;

protected:
  ConjugateGradientOptimizer();
  virtual ~ConjugateGradientOptimizer();

  typedef Superclass::CostFunctionAdaptorType CostFunctionAdaptorType;

private:
  ConjugateGradientOptimizer(const Self &); //purposely not implemented
  void operator=(const Self &);             //purposely not implemented

  bool                   m_OptimizerInitialized;
  InternalOptimizerType *m_VnlOptimizer;
};
} // end namespace itk

#endif