SeparableLowPassImageFilter.h

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//
//
/*
    Copyright (C) 2000- 2007, IRSL
    SPDX-License-Identifier: Apache-2.0
    See STIR/LICENSE.txt for details
*/

#ifndef __stir_SeparableLowPassImageFilter_H__
#define __stir_SeparableLowPassImageFilter_H__

#include "stir_experimental/SeparableLowPassArrayFilter.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 SeparableLowPassImageFilter : public RegisteredParsingObject<SeparableLowPassImageFilter<elemT>,
                                                                   DataProcessor<DiscretisedDensity<num_dimensions, elemT>>,
                                                                   DataProcessor<DiscretisedDensity<num_dimensions, elemT>>>
{
private:
  typedef RegisteredParsingObject<SeparableLowPassImageFilter<elemT>,
                                  DataProcessor<DiscretisedDensity<num_dimensions, elemT>>,
                                  DataProcessor<DiscretisedDensity<num_dimensions, elemT>>>
      base_type;

public:
  static const char* const registered_name;

  SeparableLowPassImageFilter();

  VectorWithOffset<float> get_filter_coefficients();

private:
  vector<double> filter_coefficients_for_parsing;
  VectorWithOffset<float> filter_coefficients;
  int z_trivial;

  SeparableLowPassArrayFilter<num_dimensions, elemT> lowpass_filter;

  virtual void set_defaults();
  virtual void initialise_keymap();
  virtual bool post_processing();

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

#undef num_dimensions

END_NAMESPACE_STIR

#endif