SeparableGaussianImageFilter.h

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/*
    Copyright (C) 2000- 2007, Hammersmith Imanet
    Copyright (C) 2018, UCL
    See STIR/LICENSE.txt for details
*/

#ifndef __stir_SeparableGaussianImageFilter_H__
#define __stir_SeparableGaussianImageFilter_H__

#include "stir/SeparableGaussianArrayFilter.h"
#include "stir/RegisteredParsingObject.h"
#include "stir/DataProcessor.h"
#include "stir/DiscretisedDensity.h"

START_NAMESPACE_STIR

// TODO!! remove define

#define num_dimensions 3

template <typename elemT>
class SeparableGaussianImageFilter : public RegisteredParsingObject<SeparableGaussianImageFilter<elemT>,
                                                                    DataProcessor<DiscretisedDensity<num_dimensions, elemT>>,
                                                                    DataProcessor<DiscretisedDensity<num_dimensions, elemT>>>
{
private:
  typedef RegisteredParsingObject<SeparableGaussianImageFilter<elemT>,
                                  DataProcessor<DiscretisedDensity<num_dimensions, elemT>>,
                                  DataProcessor<DiscretisedDensity<num_dimensions, elemT>>>
      base_type;

public:
  static const char* const registered_name;

  SeparableGaussianImageFilter();

  BasicCoordinate<num_dimensions, float> get_fwhms();
  BasicCoordinate<num_dimensions, int> get_max_kernel_sizes();
  bool get_normalised_filter();

  void set_fwhms(const BasicCoordinate<num_dimensions, float>&);
  void set_max_kernel_sizes(const BasicCoordinate<num_dimensions, int>&);
  void set_normalise(const bool);

private:
  BasicCoordinate<num_dimensions, float> fwhms;

protected:
  BasicCoordinate<num_dimensions, int> max_kernel_sizes;
  bool normalise;

  SeparableGaussianArrayFilter<num_dimensions, elemT> gaussian_filter;

  void set_defaults() override;
  void initialise_keymap() override;

  // virtual bool post_processing();

  Succeeded virtual_set_up(const DiscretisedDensity<num_dimensions, elemT>& image) override;
  // new
  void virtual_apply(DiscretisedDensity<num_dimensions, elemT>& out_density,
                     const DiscretisedDensity<num_dimensions, elemT>& in_density) const override;
  void virtual_apply(DiscretisedDensity<num_dimensions, elemT>& density) const override;
};

#undef num_dimensions

END_NAMESPACE_STIR

#endif