CentOS安装PCL时遇到了哪些常见问题及解决方法？

CentOS安装PCL（Point Cloud Library）指南

简介

PCL（Point Cloud Library）是一个开源的、跨平台的点云处理库，广泛应用于三维重建、机器视觉、机器人导航等领域,本文将详细介绍如何在CentOS操作系统上安装PCL。

安装前准备

1. 系统环境

   • 操作系统：CentOS 7
   • 编译器：GCC 4.8.5及以上版本
   • 其他依赖：Boost、Eigen、FLANN、OpenNI、OpenCV等

2. 安装依赖

sudo yum install -y boost boost-devel eigen3 eigen3-devel flann flann-devel openni openni-dev openni2 openni2-dev

安装CMake

sudo yum install -y cmake

下载PCL

1. 访问PCL官网（http://pointclouds.org/）下载PCL源码包。

2. 解压源码包

tar -xvf PCL-<version>.tar.gz
cd PCL-<version>

编译安装PCL

创建构建目录

mkdir build && cd build

配置CMake

cmake ..

编译PCL

make -j4

安装PCL

sudo make install

配置环境变量

编辑环境变量文件

sudo nano /etc/profile

添加以下内容

export PCL_PCL_DIR=/usr/local
export PATH=$PATH:$PCL_PCL_DIR/bin
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PCL_PCL_DIR/lib

使环境变量生效

source /etc/profile

验证安装

编写测试程序

#include <iostream>
#include <pcl/point_types.h>
#include <pcl/io/pcd_io.h>
int main(int argc, char** argv)
{
    pcl::PointCloud<pcl::PointXYZ>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZ>);
    if (pcl::io::loadPCDFile<pcl::PointXYZ>("test.pcd", *cloud) == -1)
    {
        PCL_ERROR("Couldn't read the file n");
        return -1;
    }
    std::cout << "Loaded " << cloud->width * cloud->height << " data points from test.pcd" << std::endl;
    return 0;
}

编译测试程序

g++ test.cpp -I/usr/local/include/pcl-<version>/pcl -I/usr/local/include/pcl-<version>/common -I/usr/local/include/pcl-<version>/io -I/usr/local/include/pcl-<version>/search -I/usr/local/include/pcl-<version>/filters -I/usr/local/include/pcl-<version>/features -I/usr/local/include/pcl-<version>/sample_consensus -I/usr/local/include/pcl-<version>/model_coefficients -I/usr/local/include/pcl-<version>/octree -I/usr/local/include/pcl-<version>/kdtree -I/usr/local/include/pcl-<version>/common/boost -I/usr/local/include/pcl-<version>/common/eigen -I/usr/local/include/pcl-<version>/common/ni -I/usr/local/include/pcl-<version>/common/openni2 -I/usr/local/include/pcl-<version>/common/openni2-dev -I/usr/local/include/pcl-<version>/common/openni2-dev -I/usr/local/include/pcl-<version>/common/ni -I/usr/local/include/pcl-<version>/common/eigen -I/usr/local/include/pcl-<version>/common/boost -L/usr/local/lib -lpcl_common -lpcl_io -lpcl_search -lpcl_filters -lpcl_features -lpcl_sample_consensus -lpcl_model_coefficients -lpcl_octree -lpcl_kdtree -lpcl_common -lpcl_io -lpcl_search -lpcl_filters -lpcl_features -lpcl_sample_consensus -lpcl_model_coefficients -lpcl_octree -lpcl_kdtree -o test

运行测试程序

./test

FAQs

1. 问题：编译PCL时出现错误“CMake Error at CMakeLists.txt:35 (find_package)”

   解答： 这是因为CMake找不到OpenNI库，请确保OpenNI库已正确安装,并重新运行CMake。

2. 问题：编译PCL时出现错误“undefined reference to cvCreateImage”

   解答： 这是因为CMake找不到OpenCV库，请确保OpenCV库已正确安装,并重新运行CMake。