PCL1.8.1 分割 - cylinder model

圓柱模型

http://pointclouds.org/documentation/tutorials/cylinder_segmentation.php#cylinder-segmentation

#include <pcl/ModelCoefficients.h>
#include <pcl/point_types.h>
#include <pcl/sample_consensus/method_types.h>
#include <pcl/sample_consensus/model_types.h>
#include <pcl/segmentation/sac_segmentation.h>
#include <pcl/features/normal_3d.h>

typedef pcl::PointXYZ PointT;

pcl::SACSegmentationFromNormals<PointT, pcl::Normal> seg;
pcl::PointCloud<PointT>::Ptr cloud_filtered2 (new pcl::PointCloud<PointT>);
pcl::PointCloud<pcl::Normal>::Ptr cloud_normals2 (new pcl::PointCloud<pcl::Normal>);

// Create the segmentation object for cylinder segmentation and set all the parameters
seg.setOptimizeCoefficients (true);         //設置對估計的模型係數進行優化
seg.setModelType (pcl::SACMODEL_CYLINDER);  //設置分割模型爲圓柱形
seg.setMethodType (pcl::SAC_RANSAC);
seg.setNormalDistanceWeight (0.1);  //設置表面法線權重係數
seg.setMaxIterations (10000);
seg.setDistanceThreshold (0.05);
seg.setRadiusLimits (0, 0.1);     //設置估計出的圓柱模型的半徑範圍
seg.setInputCloud (cloud_filtered2);
seg.setInputNormals (cloud_normals2);


// Obtain the cylinder inliers and coefficients

pcl::ModelCoefficients::Ptr coefficients_cylinder (new pcl::ModelCoefficients);
pcl::PointIndices::Ptr inliers_cylinder (new pcl::PointIndices);

seg.segment (*inliers_cylinder, *coefficients_cylinder);
std::cerr << "Cylinder coefficients: " << *coefficients_cylinder << std::endl;