SeparableGaussianArrayFilter.h

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//
// $Id:
//
/*
    Copyright (C) 2000- 2002, IRSL
    See STIR/LICENSE.txt for details
*/

#ifndef __stir_SeparableGaussianArrayFilter_H__
#define __stir_SeparableGaussianArrayFilter_H__

#include "stir/DiscretisedDensity.h"
#include "stir/SeparableArrayFunctionObject.h"
#include "stir/Array.h"

#include <vector>

START_NAMESPACE_STIR

template <int num_dimensions, typename elemT>
class SeparableGaussianArrayFilter : public SeparableArrayFunctionObject<num_dimensions, elemT>
{
public:
  SeparableGaussianArrayFilter();

  SeparableGaussianArrayFilter(const float standard_deviation, const int number_of_coefficients);

private:
  void calculate_coefficients(VectorWithOffset<elemT>& filter_coefficients,
                              const int number_of_coefficients,
                              const float standard_deviation);
  float standard_deviation;
  int number_of_coefficients;
};

END_NAMESPACE_STIR

#endif