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#pragma once

#include <pcl/correspondence.h>

namespace pcl
{
  namespace registration
  {
    /** \brief calculates the mean and standard deviation of descriptor distances from correspondences
      * \param[in] correspondences list of correspondences
      * \param[out] mean the mean descriptor distance of correspondences
      * \param[out] stddev the standard deviation of descriptor distances.
      * \note The sample variance is used to determine the standard deviation
      */
    inline void 
    getCorDistMeanStd (const pcl::Correspondences& correspondences, double &mean, double &stddev);

    /** \brief extracts the query indices
      * \param[in] correspondences list of correspondences
      * \param[out] indices array of extracted indices.
      * \note order of indices corresponds to input list of descriptor correspondences
      */
    inline void 
    getQueryIndices (const pcl::Correspondences& correspondences, std::vector<int>& indices);

    /** \brief extracts the match indices
      * \param[in] correspondences list of correspondences
      * \param[out] indices array of extracted indices.
      * \note order of indices corresponds to input list of descriptor correspondences
      */
    inline void 
    getMatchIndices (const pcl::Correspondences& correspondences, std::vector<int>& indices);

  }
}

#include <pcl/registration/impl/correspondence_types.hpp>
