#include<pcl/point_cloud.h>#include<pcl/kdtree/kdtree_flann.h>#include<iostream>#include<vector>#include<ctime>#include<pcl/io/io.h>#include<pcl/io/pcd_io.h>#include<pcl/point_types.h>#include<pcl/visualization/cloud_viewer.h>
using namespace std;
using namespace pcl;
using namespace pcl::io;
using namespace pcl::console;intmain(int argc,char** argv){
std::string filename("C:\\Users\\426-4\\Desktop\\2_gt.pcd");//visualizer
pcl::PointCloud<pcl