MaximalArrayFilter3D.h

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//
/*
 Copyright (C) 2006 - 2007, Hammersmith Imanet Ltd
 Copyright (C) 2010 - 2013, King's College London
 This file is part of STIR.

 SPDX-License-Identifier: Apache-2.0

 See STIR/LICENSE.txt for details
 */
#ifndef __stir_MaximalArrayFilter3D_H__
#define __stir_MaximalArrayFilter3D_H__

#include "stir/ArrayFunctionObject_2ArgumentImplementation.h"

START_NAMESPACE_STIR

template <typename coordT>
class Coordinate3D;

template <typename elemT>
class MaximalArrayFilter3D : public ArrayFunctionObject_2ArgumentImplementation<3, elemT>
{
public:
  explicit MaximalArrayFilter3D(const Coordinate3D<int>& mask_radius);
  MaximalArrayFilter3D();
  bool is_trivial() const override;

private:
  int mask_radius_x;
  int mask_radius_y;
  int mask_radius_z;

  void do_it(Array<3, elemT>& out_array, const Array<3, elemT>& in_array) const override;


  int extract_neighbours(Array<1, elemT>&, const Array<3, elemT>& array, const Coordinate3D<int>&) const;
};

END_NAMESPACE_STIR

#endif