PCL可視化點雲【顏色特征】

以顏色區別深度

為了更加直觀的顯示點雲，將不同的深度值顯示為不同的顏色。

#include <iostream>
#include <pcl/point_types.h>
#include <pcl/io/ply_io.h>
#include <pcl/visualization/pcl_visualizer.h>
#include <pcl/io/io.h>

using namespace std;
using namespace pcl;
using namespace io;

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

    if (io::loadPLYFile("bunny.ply", *cloud) == -1) { // 讀取.ply文件
        cerr << "can't read file bunny.pcd" << endl;
        return -1;
    }

    boost::shared_ptr<pcl::visualization::PCLVisualizer> viewer(new pcl::visualization::PCLVisualizer("3D Viewer"));

    pcl::visualization::PointCloudColorHandlerGenericField<pcl::PointXYZ> fildColor(cloud, "z"); // 按照z字段進行渲染
    
    viewer->addPointCloud<pcl::PointXYZ>(cloud, fildColor, "sample cloud");
    viewer->setPointCloudRenderingProperties(pcl::visualization::PCL_VISUALIZER_POINT_SIZE, 3, "sample cloud"); // 設置點雲大小

    while (!viewer->wasStopped())
    {
        viewer->spinOnce(100);
        boost::this_thread::sleep(boost::posix_time::microseconds(100000));
    }

    return 0;
}

 

結果

自定義顏色特征

/*
    任何點雲格式均可，不要求點雲帶有RGB字段
*/
#include <iostream>
#include <pcl/point_types.h>
#include <pcl/io/ply_io.h>
#include <pcl/visualization/pcl_visualizer.h>
#include <pcl/io/io.h>

using namespace std;
using namespace pcl;
using namespace io;

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

    if (io::loadPLYFile("bunny.ply", *cloud) == -1) { // 讀取.ply文件
        cerr << "can't read file bunny.pcd" << endl;
        return -1;
    }

    boost::shared_ptr<pcl::visualization::PCLVisualizer> viewer(new pcl::visualization::PCLVisualizer("3D Viewer"));
    
    pcl::visualization::PointCloudColorHandlerCustom<pcl::PointXYZ> single_color(cloud, 0, 255, 0); // green
    
    viewer->addPointCloud<pcl::PointXYZ>(cloud, single_color, "sample cloud");

    while (!viewer->wasStopped())
    {
        viewer->spinOnce(100);
        boost::this_thread::sleep(boost::posix_time::microseconds(100000));
    }
    return 0;
}

結果