点云数据的读取与显示：

　　desk.pcd 数据百度链接：

　　链接：https://pan.baidu.com/s/1mYleYemNmizXZGLQbUC59A
　　提取码：atma

#include <iostream>
#include <pcl\io\pcd_io.h>
#include <pcl\point_types.h>
#include <pcl\visualization\cloud_viewer.h>

int main() 
{
    
    pcl::PointCloud<pcl::PointXYZ>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZ>);


    if (pcl::io::loadPCDFile<pcl::PointXYZ>("F:\\BaiduNetdiskDownload\\pcl\\desk.pcd", *cloud) == -1) 
    {
        PCL_ERROR("Couldn't read file rabbit.pcd\n");
        return(-1);
    }

    std::cout << "Loaded:" << cloud->width*cloud->height << "data points from test_pcd.pcd with the following fields:" << std::endl;

    /*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;
    }*/

    pcl::visualization::CloudViewer        viewer("cloud viewer");

    viewer.showCloud(cloud);

    while (!viewer.wasStopped()) {

    }

    system("pause");

    return 0;
}

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