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