itkLBFGSOptimizerv4.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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"
#include "ITKOptimizersv4Export.h"
 
namespace itk
{
 
class ITKOptimizersv4_EXPORT LBFGSOptimizerv4 : public LBFGSOptimizerBasev4<vnl_lbfgs>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(LBFGSOptimizerv4);
 
  using Self = LBFGSOptimizerv4;
  using Superclass = LBFGSOptimizerBasev4<vnl_lbfgs>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
 
  using MetricType = Superclass::MetricType;
  using ParametersType = Superclass::ParametersType;
  using ScalesType = Superclass::ScalesType;
 
  itkNewMacro(Self);
 
  itkTypeMacro(LBFGSOptimizerv4, Superclass);
 
  void
  StartOptimization(bool doOnlyInitialization = false) override;
 
  void
  SetMetric(MetricType * metric) override;
 
  void
  VerboseOn();
  void
  VerboseOff();
 
  void
  SetLineSearchAccuracy(double f);
 
  itkGetConstMacro(LineSearchAccuracy, double);
 
  void
  SetDefaultStepLength(double f);
 
  itkGetConstMacro(DefaultStepLength, double);
 
protected:
  LBFGSOptimizerv4();
  ~LBFGSOptimizerv4() override;
  void
  PrintSelf(std::ostream & os, Indent indent) const override;
 
  using InternalParametersType = vnl_vector<double>;
 
  using InternalOptimizerType = vnl_lbfgs;
 
private:
  bool   m_Verbose{ false };
  double m_LineSearchAccuracy{ 0.9 };
  double m_DefaultStepLength{ 1.0 };
};
} // end namespace itk
#endif