SteepestDescent.hpp

// This file is part of the imaging2 class library.
//
// University of Innsbruck, Infmath Imaging, 2009.
// http://infmath.uibk.ac.at
//
// All rights reserved.


#ifndef MINIMIZE_STEEPESTDESCENT_H
#define MINIMIZE_STEEPESTDESCENT_H

#include <minimize/DifferentiableEnergyInterface.hpp>
#include <minimize/MinimizerInterface.hpp>

namespace imaging
{

  class SteepestDescent : public MinimizerInterface
  {
    float_t _min_gradient_norm;
    float_t _step_size;
    bool _terminated;
    
    DifferentiableEnergyInterface & _energy;

  public:
    SteepestDescent(DifferentiableEnergyInterface & energy, float_t min_gradient_norm, float_t step_size);
    
    bool minimize(size_t n_max_steps, size_t & n_actual_steps);
  };

}

#endif

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