test_boundary_estimation.cpp

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#include <gtest/gtest.h>
#include <pcl/point_cloud.h>
#include <pcl/features/normal_3d.h>
#include <pcl/features/boundary.h>
#include <pcl/io/pcd_io.h>

using namespace pcl;
using namespace pcl::io;
using namespace std;

typedef search::KdTree<PointXYZ>::Ptr KdTreePtr;

PointCloud<PointXYZ> cloud;
vector<int> indices;
KdTreePtr tree;

TEST (PCL, BoundaryEstimation)
{
  Eigen::Vector4f u = Eigen::Vector4f::Zero ();
  Eigen::Vector4f v = Eigen::Vector4f::Zero ();

  // Estimate normals first
  NormalEstimation<PointXYZ, Normal> n;
  PointCloud<Normal>::Ptr normals (new PointCloud<Normal> ());
  // set parameters
  n.setInputCloud (cloud.makeShared ());
  boost::shared_ptr<vector<int> > indicesptr (new vector<int> (indices));
  n.setIndices (indicesptr);
  n.setSearchMethod (tree);
  n.setKSearch (static_cast<int> (indices.size ()));
  // estimate
  n.compute (*normals);

  BoundaryEstimation<PointXYZ, Normal, Boundary> b;
  b.setInputNormals (normals);
  EXPECT_EQ (b.getInputNormals (), normals);

  // getCoordinateSystemOnPlane
  for (size_t i = 0; i < normals->points.size (); ++i)
  {
    b.getCoordinateSystemOnPlane (normals->points[i], u, v);
    Vector4fMap n4uv = normals->points[i].getNormalVector4fMap ();
    EXPECT_NEAR (n4uv.dot(u), 0, 1e-4);
    EXPECT_NEAR (n4uv.dot(v), 0, 1e-4);
    EXPECT_NEAR (u.dot(v), 0, 1e-4);
  }

  // isBoundaryPoint (indices)
  bool pt = false;
  pt = b.isBoundaryPoint (cloud, 0, indices, u, v, float (M_PI) / 2.0);
  EXPECT_EQ (pt, false);
  pt = b.isBoundaryPoint (cloud, static_cast<int> (indices.size ()) / 3, indices, u, v, float (M_PI) / 2.0);
  EXPECT_EQ (pt, false);
  pt = b.isBoundaryPoint (cloud, static_cast<int> (indices.size ()) / 2, indices, u, v, float (M_PI) / 2.0);
  EXPECT_EQ (pt, false);
  pt = b.isBoundaryPoint (cloud, static_cast<int> (indices.size ()) - 1, indices, u, v, float (M_PI) / 2.0);
  EXPECT_EQ (pt, true);

  // isBoundaryPoint (points)
  pt = false;
  pt = b.isBoundaryPoint (cloud, cloud.points[0], indices, u, v, float (M_PI) / 2.0);
  EXPECT_EQ (pt, false);
  pt = b.isBoundaryPoint (cloud, cloud.points[indices.size () / 3], indices, u, v, float (M_PI) / 2.0);
  EXPECT_EQ (pt, false);
  pt = b.isBoundaryPoint (cloud, cloud.points[indices.size () / 2], indices, u, v, float (M_PI) / 2.0);
  EXPECT_EQ (pt, false);
  pt = b.isBoundaryPoint (cloud, cloud.points[indices.size () - 1], indices, u, v, float (M_PI) / 2.0);
  EXPECT_EQ (pt, true);

  // Object
  PointCloud<Boundary>::Ptr bps (new PointCloud<Boundary> ());

  // set parameters
  b.setInputCloud (cloud.makeShared ());
  b.setIndices (indicesptr);
  b.setSearchMethod (tree);
  b.setKSearch (static_cast<int> (indices.size ()));

  // estimate
  b.compute (*bps);
  EXPECT_EQ (bps->points.size (), indices.size ());

  pt = bps->points[0].boundary_point;
  EXPECT_EQ (pt, false);
  pt = bps->points[indices.size () / 3].boundary_point;
  EXPECT_EQ (pt, false);
  pt = bps->points[indices.size () / 2].boundary_point;
  EXPECT_EQ (pt, false);
  pt = bps->points[indices.size () - 1].boundary_point;
  EXPECT_EQ (pt, true);
}

#ifndef PCL_ONLY_CORE_POINT_TYPES

  TEST (PCL, BoundaryEstimationEigen)
  {
    Eigen::Vector4f u = Eigen::Vector4f::Zero ();
    Eigen::Vector4f v = Eigen::Vector4f::Zero ();

    // Estimate normals first
    NormalEstimation<PointXYZ, Normal> n;
    PointCloud<Normal>::Ptr normals (new PointCloud<Normal>);
    // set parameters
    n.setInputCloud (cloud.makeShared ());
    boost::shared_ptr<vector<int> > indicesptr (new vector<int> (indices));
    n.setIndices (indicesptr);
    n.setSearchMethod (tree);
    n.setKSearch (static_cast<int> (indices.size ()));
    // estimate
    n.compute (*normals);

    BoundaryEstimation<PointXYZ, Normal, Eigen::MatrixXf> b;
    b.setInputNormals (normals);
    EXPECT_EQ (b.getInputNormals (), normals);

    // getCoordinateSystemOnPlane
    for (size_t i = 0; i < normals->points.size (); ++i)
    {
      b.getCoordinateSystemOnPlane (normals->points[i], u, v);
      Vector4fMap n4uv = normals->points[i].getNormalVector4fMap ();
      EXPECT_NEAR (n4uv.dot(u), 0, 1e-4);
      EXPECT_NEAR (n4uv.dot(v), 0, 1e-4);
      EXPECT_NEAR (u.dot(v), 0, 1e-4);
    }

    // isBoundaryPoint (indices)
    bool pt = false;
    pt = b.isBoundaryPoint (cloud, 0, indices, u, v, float (M_PI) / 2.0);
    EXPECT_EQ (pt, false);
    pt = b.isBoundaryPoint (cloud, static_cast<int> (indices.size () / 3), indices, u, v, float (M_PI) / 2.0);
    EXPECT_EQ (pt, false);
    pt = b.isBoundaryPoint (cloud, static_cast<int> (indices.size () / 2), indices, u, v, float (M_PI) / 2.0);
    EXPECT_EQ (pt, false);
    pt = b.isBoundaryPoint (cloud, static_cast<int> (indices.size () - 1), indices, u, v, float (M_PI) / 2.0);
    EXPECT_EQ (pt, true);

    // isBoundaryPoint (points)
    pt = false;
    pt = b.isBoundaryPoint (cloud, cloud.points[0], indices, u, v, float (M_PI) / 2.0);
    EXPECT_EQ (pt, false);
    pt = b.isBoundaryPoint (cloud, cloud.points[indices.size () / 3], indices, u, v, float (M_PI) / 2.0);
    EXPECT_EQ (pt, false);
    pt = b.isBoundaryPoint (cloud, cloud.points[indices.size () / 2], indices, u, v, float (M_PI) / 2.0);
    EXPECT_EQ (pt, false);
    pt = b.isBoundaryPoint (cloud, cloud.points[indices.size () - 1], indices, u, v, float (M_PI) / 2.0);
    EXPECT_EQ (pt, true);

    // Object
    PointCloud<Eigen::MatrixXf>::Ptr bps (new PointCloud<Eigen::MatrixXf> ());

    // set parameters
    b.setInputCloud (cloud.makeShared ());
    b.setIndices (indicesptr);
    b.setSearchMethod (tree);
    b.setKSearch (static_cast<int> (indices.size ()));

    // estimate
    b.computeEigen (*bps);
    EXPECT_EQ (bps->points.rows (), indices.size ());

    pt = bps->points (0, 0);
    EXPECT_EQ (pt, false);
    pt = bps->points (indices.size () / 3, 0);
    EXPECT_EQ (pt, false);
    pt = bps->points (indices.size () / 2, 0);
    EXPECT_EQ (pt, false);
    pt = bps->points (indices.size () - 1, 0);
    EXPECT_EQ (pt, true);
  }
#endif

/* ---[ */
int
main (int argc, char** argv)
{
  if (argc < 2)
  {
    std::cerr << "No test file given. Please download `bun0.pcd` and pass its path to the test." << std::endl;
    return (-1);
  }

  if (loadPCDFile<PointXYZ> (argv[1], cloud) < 0)
  {
    std::cerr << "Failed to read test file. Please download `bun0.pcd` and pass its path to the test." << std::endl;
    return (-1);
  }

  indices.resize (cloud.points.size ());
  for (size_t i = 0; i < indices.size (); ++i)
    indices[i] = static_cast<int> (i);

  tree.reset (new search::KdTree<PointXYZ> (false));
  tree->setInputCloud (cloud.makeShared ());

  testing::InitGoogleTest (&argc, argv);
  return (RUN_ALL_TESTS ());
}
/* ]--- */