01.测试程序：
#include<iostream>
#include<pcl/io/pcd_io.h>
#include<pcl/point_types.h>
#include <pcl/visualization/cloud_viewer.h>
int main(int argc, char** argv)
{
pcl::PointCloud<pcl::PointXYZ>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZ>);
//*打开点云文件
if (pcl::io::loadPCDFile<pcl::PointXYZ>("rabbit.pcd", *cloud) == -1) {
PCL_ERROR("Couldn't read file rabbit.pcd\n");
return(-1);
}
std::cout << cloud->points.size() << std::endl;
pcl::visualization::CloudViewer viewer("cloud viewer");
viewer.showCloud(cloud);
while (!viewer.wasStopped())
{
}
system("pause");
return 0;
}