点群の最大値，最小値を取得するサンプルコードです

get_min_max.cpp

#include <iostream>
#include <pcl/io/pcd_io.h>
#include <pcl/common/common.h>

int 
main (int, char**)
{
  pcl::PointCloud<pcl::PointXYZ>::Ptr cloud;
  cloud = pcl::PointCloud<pcl::PointXYZ>::Ptr (new pcl::PointCloud<pcl::PointXYZ>);
  pcl::io::loadPCDFile<pcl::PointXYZ> ("your_pcd_file.pcd", *cloud);
  pcl::PointXYZ minPt, maxPt;
  pcl::getMinMax3D (*cloud, minPt, maxPt);
  std::cout << "Max x: " << maxPt.x << std::endl;
  std::cout << "Max y: " << maxPt.y << std::endl;
  std::cout << "Max z: " << maxPt.z << std::endl;
  std::cout << "Min x: " << minPt.x << std::endl;
  std::cout << "Min y: " << minPt.y << std::endl;
  std::cout << "Min z: " << minPt.z << std::endl;
  return (0);
}

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