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/***************************************************************************
* Copyright (c) 2016 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include <Mod/Points/App/Points.h>
#include "Segmentation.h"
#if defined(HAVE_PCL_FILTERS)
# include <pcl/features/normal_3d.h>
# include <pcl/filters/extract_indices.h>
# include <pcl/filters/passthrough.h>
#endif
#if defined(HAVE_PCL_SAMPLE_CONSENSUS)
# include <pcl/sample_consensus/method_types.h>
# include <pcl/sample_consensus/model_types.h>
#endif
#if defined(HAVE_PCL_SEGMENTATION)
# include <pcl/ModelCoefficients.h>
# include <pcl/io/pcd_io.h>
# include <pcl/point_types.h>
# include <pcl/segmentation/sac_segmentation.h>
#endif
using namespace std;
using namespace Reen;
#if defined(HAVE_PCL_FILTERS)
using pcl::PointCloud;
using pcl::PointNormal;
using pcl::PointXYZ;
#endif
#if defined(HAVE_PCL_SEGMENTATION)
Segmentation::Segmentation(const Points::PointKernel& pts, std::list<std::vector<int>>& clusters)
: myPoints(pts)
, myClusters(clusters)
{}
void Segmentation::perform(int ksearch)
{
// All the objects needed
pcl::PassThrough<PointXYZ> pass;
pcl::NormalEstimation<PointXYZ, pcl::Normal> ne;
pcl::SACSegmentationFromNormals<PointXYZ, pcl::Normal> seg;
pcl::ExtractIndices<PointXYZ> extract;
pcl::ExtractIndices<pcl::Normal> extract_normals;
pcl::search::KdTree<PointXYZ>::Ptr tree(new pcl::search::KdTree<PointXYZ>());
// Datasets
pcl::PointCloud<PointXYZ>::Ptr cloud(new pcl::PointCloud<PointXYZ>);
pcl::PointCloud<PointXYZ>::Ptr cloud_filtered(new pcl::PointCloud<PointXYZ>);
pcl::PointCloud<pcl::Normal>::Ptr cloud_normals(new pcl::PointCloud<pcl::Normal>);
pcl::PointCloud<PointXYZ>::Ptr cloud_filtered2(new pcl::PointCloud<PointXYZ>);
pcl::PointCloud<pcl::Normal>::Ptr cloud_normals2(new pcl::PointCloud<pcl::Normal>);
pcl::ModelCoefficients::Ptr coefficients_plane(new pcl::ModelCoefficients),
coefficients_cylinder(new pcl::ModelCoefficients);
pcl::PointIndices::Ptr inliers_plane(new pcl::PointIndices),
inliers_cylinder(new pcl::PointIndices);
// Copy the points
cloud->reserve(myPoints.size());
for (Points::PointKernel::const_iterator it = myPoints.begin(); it != myPoints.end(); ++it) {
cloud->push_back(pcl::PointXYZ(it->x, it->y, it->z));
}
cloud->width = int(cloud->points.size());
cloud->height = 1;
// Build a passthrough filter to remove spurious NaNs
pass.setInputCloud(cloud);
pass.setFilterFieldName("z");
pass.setFilterLimits(0, 1.5);
pass.filter(*cloud_filtered);
// Estimate point normals
ne.setSearchMethod(tree);
ne.setInputCloud(cloud_filtered);
ne.setKSearch(ksearch);
ne.compute(*cloud_normals);
// Create the segmentation object for the planar model and set all the parameters
seg.setOptimizeCoefficients(true);
seg.setModelType(pcl::SACMODEL_NORMAL_PLANE);
seg.setNormalDistanceWeight(0.1);
seg.setMethodType(pcl::SAC_RANSAC);
seg.setMaxIterations(100);
seg.setDistanceThreshold(0.03);
seg.setInputCloud(cloud_filtered);
seg.setInputNormals(cloud_normals);
// Obtain the plane inliers and coefficients
seg.segment(*inliers_plane, *coefficients_plane);
myClusters.push_back(inliers_plane->indices);
// Extract the planar inliers from the input cloud
extract.setInputCloud(cloud_filtered);
extract.setIndices(inliers_plane);
extract.setNegative(false);
// Write the planar inliers to disk
pcl::PointCloud<PointXYZ>::Ptr cloud_plane(new pcl::PointCloud<PointXYZ>());
extract.filter(*cloud_plane);
// Remove the planar inliers, extract the rest
extract.setNegative(true);
extract.filter(*cloud_filtered2);
extract_normals.setNegative(true);
extract_normals.setInputCloud(cloud_normals);
extract_normals.setIndices(inliers_plane);
extract_normals.filter(*cloud_normals2);
// Create the segmentation object for cylinder segmentation and set all the parameters
seg.setOptimizeCoefficients(true);
seg.setModelType(pcl::SACMODEL_CYLINDER);
seg.setNormalDistanceWeight(0.1);
seg.setMethodType(pcl::SAC_RANSAC);
seg.setMaxIterations(10000);
seg.setDistanceThreshold(0.05);
seg.setRadiusLimits(0, 0.1);
seg.setInputCloud(cloud_filtered2);
seg.setInputNormals(cloud_normals2);
// Obtain the cylinder inliers and coefficients
seg.segment(*inliers_cylinder, *coefficients_cylinder);
myClusters.push_back(inliers_cylinder->indices);
// Write the cylinder inliers to disk
extract.setInputCloud(cloud_filtered2);
extract.setIndices(inliers_cylinder);
extract.setNegative(false);
pcl::PointCloud<PointXYZ>::Ptr cloud_cylinder(new pcl::PointCloud<PointXYZ>());
extract.filter(*cloud_cylinder);
}
#endif // HAVE_PCL_SEGMENTATION
// ----------------------------------------------------------------------------
#if defined(HAVE_PCL_FILTERS)
NormalEstimation::NormalEstimation(const Points::PointKernel& pts)
: myPoints(pts)
, kSearch(0)
, searchRadius(0)
{}
void NormalEstimation::perform(std::vector<Base::Vector3d>& normals)
{
// Copy the points
pcl::PointCloud<PointXYZ>::Ptr cloud(new pcl::PointCloud<PointXYZ>);
cloud->reserve(myPoints.size());
for (Points::PointKernel::const_iterator it = myPoints.begin(); it != myPoints.end(); ++it) {
cloud->push_back(pcl::PointXYZ(it->x, it->y, it->z));
}
cloud->width = int(cloud->points.size());
cloud->height = 1;
# if 0
// Build a passthrough filter to remove spurious NaNs
pcl::PointCloud<PointXYZ>::Ptr cloud_filtered (new pcl::PointCloud<PointXYZ>);
pcl::PassThrough<PointXYZ> pass;
pass.setInputCloud (cloud);
pass.setFilterFieldName ("z");
pass.setFilterLimits (0, 1.5);
pass.filter (*cloud_filtered);
# endif
// Estimate point normals
pcl::PointCloud<pcl::Normal>::Ptr cloud_normals(new pcl::PointCloud<pcl::Normal>);
pcl::search::KdTree<PointXYZ>::Ptr tree(new pcl::search::KdTree<PointXYZ>());
pcl::NormalEstimation<PointXYZ, pcl::Normal> ne;
ne.setSearchMethod(tree);
// ne.setInputCloud (cloud_filtered);
ne.setInputCloud(cloud);
if (kSearch > 0) {
ne.setKSearch(kSearch);
}
if (searchRadius > 0) {
ne.setRadiusSearch(searchRadius);
}
ne.compute(*cloud_normals);
normals.reserve(cloud_normals->size());
for (pcl::PointCloud<pcl::Normal>::const_iterator it = cloud_normals->begin();
it != cloud_normals->end();
++it) {
normals.push_back(Base::Vector3d(it->normal_x, it->normal_y, it->normal_z));
}
}
#endif // HAVE_PCL_FILTERS
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