PCL（4）PCD格式转换为PLY格式

#include <iostream>          //输入输出流头文件
#include <pcl/io/pcd_io.h>   //打开关闭pcd类定义头文件
#include <pcl/point_types.h> //所有点类型定义头文件
#include <pcl/io/ply_io.h>   //打开关闭ply类定义头文件

int main(int argc, char** argv)
{
  pcl::PointCloud<pcl::PointXYZ>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZ>);   

  if (pcl::io::loadPCDFile<pcl::PointXYZ>("F://PCL online data//three//6//source//test.pcd", *cloud) == -1) //加载文件
  {
    PCL_ERROR("Couldn't read file  \n");
    system("PAUSE");
    return (-1);
  }
  //显示点云数量
  std::cout << "point number: "
    << cloud->width * cloud->height
    << std::endl;

  //显示文件中各点数据
  /*
  for (size_t i = 0; i < cloud->points.size(); ++i)
    std::cout << "    " << cloud->points[i].x
    << " " << cloud->points[i].y
    << " " << cloud->points[i].z
    << std::endl;
  */
  std::string filename("test1.ply");
  pcl::PLYWriter writer;
  writer.write("F://PCL online data//three//6//source//test1.ply", *cloud);  //保存文件

  system("PAUSE");
  return (0);
}