text: /*******************************************************
   * Copyright (c) 2014, ArrayFire
   * All rights reserved.
   *
   * This file is distributed under 3-clause BSD license.
   * The complete license agreement can be obtained at:
   * http://arrayfire.com/licenses/BSD-3-Clause
   ********************************************************/
  
  #include <af/features.h>
  #include <Array.hpp>
  
  using af::features;
  
  namespace cuda
  {
  
  template<typename T>
  void fast_pyramid(std::vector<unsigned>& feat_pyr, std::vector<float*>& d_x_pyr,
                    std::vector<float*>& d_y_pyr, std::vector<unsigned>& lvl_best,
                    std::vector<float>& lvl_scl, std::vector<CParam<T> >& img_pyr,
                    const Array<T>& image,
                    const float fast_thr, const unsigned max_feat,
                    const float scl_fctr, const unsigned levels,
                    const unsigned patch_size);
  
  }
  