DDSR2DReconstruction.h

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//
//
#ifndef __stir_analytic_DDSR2D_DDSR2DReconstruction_H__
#define __stir_analytic_DDSR2D_DDSR2DReconstruction_H__
/*
    Copyright (C) 2014-2016, 2023-2025, Dimitra Kyriakopoulou
    Copyright (C) 2025, University College London
    This file is part of STIR.

    SPDX-License-Identifier: Apache-2.0

    See STIR/LICENSE.txt for details
*/
#include "stir/recon_buildblock/AnalyticReconstruction.h"
//#include "stir/recon_buildblock/BackProjectorByBin.h"
#include "stir/RegisteredParsingObject.h"
#include <string>
#include "stir/shared_ptr.h"

START_NAMESPACE_STIR

template <int num_dimensions, typename elemT>
class DiscretisedDensity;
class Succeeded;
class ProjData;

class DDSR2DReconstruction
    : public RegisteredParsingObject<DDSR2DReconstruction, Reconstruction<DiscretisedDensity<3, float>>, AnalyticReconstruction>
{
  // typedef AnalyticReconstruction base_type;
  typedef RegisteredParsingObject<DDSR2DReconstruction, Reconstruction<DiscretisedDensity<3, float>>, AnalyticReconstruction>
      base_type;

public:
  static constexpr const char* const registered_name = "DDSR2D";

  DDSR2DReconstruction();
  explicit DDSR2DReconstruction(const std::string& parameter_filename);

  DDSR2DReconstruction(const shared_ptr<ProjData>&,
                       const shared_ptr<DiscretisedDensity<3, float>>&,
                       const double noise_filter = -1.,
                       const double noise_filter2 = -1.);

  virtual std::string method_info() const;

  virtual void ask_parameters();

  virtual Succeeded set_up(shared_ptr<TargetT> const& target_data_sptr);

protected: // make parameters protected such that doc shows always up in doxygen
  // parameters used for parsing

  // Noise filter
  double noise_filter;
  double noise_filter2;


  int display_level;

  std::string attenuation_map_filename;
  shared_ptr<DiscretisedDensity<3, float>> atten_data_ptr;

private:
  Succeeded actual_reconstruct(shared_ptr<DiscretisedDensity<3, float>> const& target_image_ptr);

  virtual void set_defaults();
  virtual void initialise_keymap();
  virtual bool post_processing();
  // bool post_processing_only_DDSR2D_parameters();
};

END_NAMESPACE_STIR

#endif