sac_model_normal_sphere.h

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 * $Id: sac_model_normal_sphere.h schrandt $
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#pragma once
 
#include <pcl/sample_consensus/sac_model.h>
#include <pcl/sample_consensus/sac_model_sphere.h>
#include <pcl/sample_consensus/model_types.h>
#include <pcl/memory.h>
#include <pcl/pcl_macros.h>
 
namespace pcl
{
  /** \brief @b SampleConsensusModelNormalSphere defines a model for 3D sphere
    * segmentation using additional surface normal constraints. Basically this
    * means that checking for inliers will not only involve a "distance to
    * model" criterion, but also an additional "maximum angular deviation"
    * between the sphere's normal and the inlier points normals.
    *
    * The model coefficients are defined as:
    * <ul>
    * <li><b>center.x</b> : the X coordinate of the sphere's center
    * <li><b>center.y</b> : the Y coordinate of the sphere's center
    * <li><b>center.z</b> : the Z coordinate of the sphere's center
    * <li><b>radius</b> : radius of the sphere
    * </ul>
    *
    * \author Stefan Schrandt
    * \ingroup sample_consensus
    */
  template <typename PointT, typename PointNT>
  class SampleConsensusModelNormalSphere : public SampleConsensusModelSphere<PointT>, public SampleConsensusModelFromNormals<PointT, PointNT>
  {
    public:
      using SampleConsensusModel<PointT>::model_name_;
      using SampleConsensusModel<PointT>::input_;
      using SampleConsensusModel<PointT>::indices_;
      using SampleConsensusModel<PointT>::radius_min_;
      using SampleConsensusModel<PointT>::radius_max_;
      using SampleConsensusModelFromNormals<PointT, PointNT>::normals_;
      using SampleConsensusModelFromNormals<PointT, PointNT>::normal_distance_weight_;
      using SampleConsensusModel<PointT>::error_sqr_dists_;
 
      using PointCloud = typename SampleConsensusModel<PointT>::PointCloud;
      using PointCloudPtr = typename SampleConsensusModel<PointT>::PointCloudPtr;
      using PointCloudConstPtr = typename SampleConsensusModel<PointT>::PointCloudConstPtr;
 
      using PointCloudNPtr = typename SampleConsensusModelFromNormals<PointT, PointNT>::PointCloudNPtr;
      using PointCloudNConstPtr = typename SampleConsensusModelFromNormals<PointT, PointNT>::PointCloudNConstPtr;
 
      using Ptr = shared_ptr<SampleConsensusModelNormalSphere<PointT, PointNT> >;
      using ConstPtr = shared_ptr<const SampleConsensusModelNormalSphere<PointT, PointNT>>;
 
      /** \brief Constructor for base SampleConsensusModelNormalSphere.
        * \param[in] cloud the input point cloud dataset
        * \param[in] random if true set the random seed to the current time, else set to 12345 (default: false)
        */
      SampleConsensusModelNormalSphere (const PointCloudConstPtr &cloud, 
                                        bool random = false) 
        : SampleConsensusModelSphere<PointT> (cloud, random)
        , SampleConsensusModelFromNormals<PointT, PointNT> ()
      {
        model_name_ = "SampleConsensusModelNormalSphere";
        sample_size_ = 4;
        model_size_ = 4;
      }
 
      /** \brief Constructor for base SampleConsensusModelNormalSphere.
        * \param[in] cloud the input point cloud dataset
        * \param[in] indices a vector of point indices to be used from \a cloud
        * \param[in] random if true set the random seed to the current time, else set to 12345 (default: false)
        */
      SampleConsensusModelNormalSphere (const PointCloudConstPtr &cloud, 
                                        const Indices &indices,
                                        bool random = false) 
        : SampleConsensusModelSphere<PointT> (cloud, indices, random)
        , SampleConsensusModelFromNormals<PointT, PointNT> ()
      {
        model_name_ = "SampleConsensusModelNormalSphere";
        sample_size_ = 4;
        model_size_ = 4;
      }
      
      /** \brief Empty destructor */
      ~SampleConsensusModelNormalSphere () override = default;
 
      /** \brief Select all the points which respect the given model coefficients as inliers.
        * \param[in] model_coefficients the coefficients of a sphere model that we need to compute distances to
        * \param[in] threshold a maximum admissible distance threshold for determining the inliers from the outliers
        * \param[out] inliers the resultant model inliers
        */
      void 
      selectWithinDistance (const Eigen::VectorXf &model_coefficients, 
                            const double threshold, 
                            Indices &inliers) override;
 
      /** \brief Count all the points which respect the given model coefficients as inliers. 
        * \param[in] model_coefficients the coefficients of a model that we need to compute distances to
        * \param[in] threshold maximum admissible distance threshold for determining the inliers from the outliers
        * \return the resultant number of inliers
        */
      std::size_t
      countWithinDistance (const Eigen::VectorXf &model_coefficients,
                           const double threshold) const override;
 
      /** \brief Compute all distances from the cloud data to a given sphere model.
        * \param[in] model_coefficients the coefficients of a sphere model that we need to compute distances to
        * \param[out] distances the resultant estimated distances
        */
      void
      getDistancesToModel (const Eigen::VectorXf &model_coefficients,
                           std::vector<double> &distances) const override;
 
      /** \brief Return a unique id for this model (SACMODEL_NORMAL_SPHERE). */
      inline pcl::SacModel 
      getModelType () const override { return (SACMODEL_NORMAL_SPHERE); }
 
      PCL_MAKE_ALIGNED_OPERATOR_NEW
 
    protected:
      using SampleConsensusModel<PointT>::sample_size_;
      using SampleConsensusModel<PointT>::model_size_;
      using SampleConsensusModelSphere<PointT>::isModelValid;
  };
}
 
#ifdef PCL_NO_PRECOMPILE
#include <pcl/sample_consensus/impl/sac_model_normal_sphere.hpp>
#endif