程序示例精选
C++ PCL点云局部颜色变换
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前言
这篇博客针对《C++ PCL点云局部颜色变换》编写代码,代码整洁,规则,易读。 学习与应用推荐首选。
运行结果
文章目录
一、所需工具软件
二、使用步骤
1. 主要代码
2. 运行结果
三、在线协助
一、所需工具软件
1. VS2019, Qt
2. C++
二、使用步骤
代码如下(示例):
#include <iostream>
#include <vector>
#include <pcl/io/pcd_io.h>
#include <pcl/point_cloud.h>
#include <pcl/point_types.h>
#include <pcl/visualization/pcl_visualizer.h>
pcl::PointCloud<pcl::PointXYZ>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZ>());
boost::shared_ptr<pcl::visualization::PCLVisualizer> viewer(new pcl::visualization::PCLVisualizer("viewer"));
pcl::PointCloud<pcl::PointXYZ>::Ptr clicked_points_3d(new pcl::PointCloud<pcl::PointXYZ>);
int num = 0;
unsigned char* pointmark;//点云分类标记
namespace
{
#include<fstream>
#include<string>
void MarkSelectPointIndexToTxt(std::vector<int>& indices, std::string txtfilename)
{
std::fstream ofs(txtfilename, std::ios::out);
if (ofs.is_open())
{
for (auto& index : indices)
{
ofs << std::to_string(index) << "\n";
}
ofs.flush();
ofs.close();
std::cout << "write" << txtfilename << "successfully" << std::endl;
}
}
}
void main()
{
char path[100];
sprintf_s(path, "Airplane_v1.pcd");
if (pcl::io::loadPCDFile(path, *cloud))
{
std::cerr << "ERROR: Cannot open file " << std::endl;
return;
}
pointmark = new unsigned char[cloud->size()];
for (size_t i = 0; i < cloud->size(); i++)
{
pointmark[i] = 0;//初始化点云分类标识,0为未标记点
}
viewer->addPointCloud<pcl::PointXYZ>(cloud, "point");//添加显示点云
clicked_points_3d->width = 0;//初始化点云个数
std::vector<int> indices;
//读尾巴的点
//ReadPointIndexFromTxt(indices, "tail.txt");
//读翅膀的点
ReadPointIndexFromTxt(indices, "head.txt");
//添加点云(去掉重复的点)
int addcount = 0;//添加点计数
for (int i = 0; i < indices.size(); ++i)
{
if (pointmark[indices[i]] == 0)
{
clicked_points_3d->points.push_back(cloud->points.at(indices[i]));
addcount++;
pointmark[indices[i]] = 1;//将点云标记为已圈选状态
}
}
pcl::visualization::PointCloudColorHandlerCustom<pcl::PointXYZ> red(clicked_points_3d, 255, 0, 0);
//每添加一次点云都要取一次别名,不然只能选择一次
std::stringstream ss;
std::string cloudName;
ss << num++;
ss >> cloudName;
cloudName += "_cloudName";
//添加点云,并设置其显示半径
viewer->addPointCloud(clicked_points_3d, red, cloudName);
viewer->setPointCloudRenderingProperties(pcl::visualization::PCL_VISUALIZER_POINT_SIZE, 2, cloudName);
//viewer->registerAreaPickingCallback(pp_callback, (void*)&cloud);
while (!viewer->wasStopped())
{
viewer->spinOnce(100);
}
delete[]pointmark;
}
运行结果
三、在线协助:
如需安装运行环境或远程调试,见文章底部个人 QQ 名片,由专业技术人员远程协助!
1)远程安装运行环境,代码调试
2)Visual Studio, Qt, C++, Python编程语言入门指导
3)界面美化
4)软件制作
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