itkLBFGSOptimizerv4.h

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/*=========================================================================
 *
 *  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 __itkLBFGSOptimizerv4_h
#define __itkLBFGSOptimizerv4_h

#include "itkLBFGSOptimizerBasev4.h"
#include "vnl/algo/vnl_lbfgs.h"

namespace itk
{
class LBFGSOptimizerv4:
    public LBFGSOptimizerBasev4< vnl_lbfgs >
{
public:
  typedef LBFGSOptimizerv4                  Self;
  typedef LBFGSOptimizerBasev4<vnl_lbfgs>   Superclass;
  typedef SmartPointer< Self >              Pointer;
  typedef SmartPointer< const Self >        ConstPointer;

  typedef Superclass::MetricType     MetricType;
  typedef Superclass::ParametersType ParametersType;
  typedef Superclass::ScalesType     ScalesType;

  itkNewMacro(Self);

  itkTypeMacro(LBFGSOptimizerv4, Superclass);

  virtual void StartOptimization(bool doOnlyInitialization = false) ITK_OVERRIDE;

  virtual void SetMetric(MetricType *metric) ITK_OVERRIDE;

  void VerboseOn(void);
  void VerboseOff(void);

  void SetLineSearchAccuracy(double tol);

  itkGetConstMacro(LineSearchAccuracy, double);

  void SetDefaultStepLength(double stp);

  itkGetConstMacro(DefaultStepLength, double);

protected:
  LBFGSOptimizerv4();
  virtual ~LBFGSOptimizerv4();
  virtual void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;

  typedef vnl_vector< double >  InternalParametersType;

  typedef   vnl_lbfgs           InternalOptimizerType;

private:
  LBFGSOptimizerv4(const Self &); //purposely not implemented
  void operator=(const Self &); //purposely not implemented

  bool         m_Verbose;
  double       m_LineSearchAccuracy;
  double       m_DefaultStepLength;
};
} // end namespace itk
#endif