❤️openCV安装❤️ | 最基础的openCV程序运行示例【linux】

💙openCV 下载安装

❤️基础环境

• 操作系统：Ubuntu 18.04.5
• 编程工具：bash shell
• VScode
• 基础的 gcc、G++ 安装

❤️下载一个喜欢的版本即可

• https://github.com/opencv/opencv/releases/tag/4.5.3

❤️极简【无脑】安装

# 解压到服务器目录
unzip opencv-4.5.3

cd opencv-4.5.3/

# 开始安装之旅

mkdir build
cd build/

# root 用户直接运行，会默认编译安装到/usr/local 目录下
cmake ..
make -j16
make install

# 普通用户，没有 /usr/local 写入权限，需要 指定安装路径

make install DESTDIR=/home/Moli/usr/local 


  

 

  
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💙openCV 读取保存图像【极简示例】

程序只包含 | example.cpp 和 CMakeLists.txt 即可

❤️example.cpp

#include "opencv2/core.hpp"
#include "opencv2/imgproc.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/videoio.hpp"
#include <iostream>

using namespace cv;
using namespace std;

int main()
{
    cout << "Built with OpenCV " << CV_VERSION << endl;
    Mat src = cv::imread("../conda.png");
    // cv::imshow("src", src);
    // waitKey(0);
    // 图像缩放
    int width{256}, height{256};
    cv::resize(src, src, cv::Size(width, height));

    cv::imwrite("256src.png", src);
    return 0;
}


  

 

  
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❤️CMakeLists.txt

配置 OpenCV_DIR 路径【openCV build 目录即可】

# cmake needs this line
cmake_minimum_required(VERSION 3.1)

# Define project name
project(first_墨理_project)

# Find OpenCV, you may need to set OpenCV_DIR variable
# to the absolute path to the directory containing OpenCVConfig.cmake file
# via the command line or GUI

set(OpenCV_DIR /home/墨理/project/project21Next/vscodeFirst/opencv-4.5.3/build)
find_package(OpenCV REQUIRED)

# If the package has been found, several variables will
# be set, you can find the full list with descriptions
# in the OpenCVConfig.cmake file.
# Print some message showing some of them
message(STATUS "OpenCV library status:")
message(STATUS "    config: ${OpenCV_DIR}")
message(STATUS "    version: ${OpenCV_VERSION}")
message(STATUS "    libraries: ${OpenCV_LIBS}")
message(STATUS "    include path: ${OpenCV_INCLUDE_DIRS}")

# Declare the executable target built from your sources
add_executable(first example.cpp)

# Link your application with OpenCV libraries
target_link_libraries(first PRIVATE ${OpenCV_LIBS})


  

 

  
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💙Linux 下编译运行

命令如下

mkdir build

cd  build/

cmake ..
make

# 生成得到可执行文件 first | 运行即可 

./first 


  

 

  
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查看生成的缩放图片【没看错，是在下】

🚀 VSCode 远程运行该项目示例效果如下

如何使用 VSCode 远程调试 – 运行项目 ，可参考我的这篇博文

---

VSCode远程连接Linux服务器进行开发调试

🚀🚀 OpenCV 学习系列博文推荐

🍖安装

• ❤️ openCV安装 | 最基础的openCV程序运行示例【linux】
• ❤️Linux 个人用户 openCV 编译安装❤️ | Ubuntu 18.04 安装OpenCV + OpenCV_Contrib

🍖openCV Python 系列方法测试运行

• 💙 opencv-master4.5.1 Python 示例代码运行测试 ( 一 ) | 分割 - 视频人像跟踪
• 💛 opencv-master4.5.1 Python 示例代码运行测试（二） | 拐角检测 | 轮廓检测
• 💜 opencv-master4.5.1 Python 示例代码运行测试（三） | HDR 合成
• ❤️ opencv-Python程序测试（四）|PCA和SVM测试
• 💙 opencv-Python测试（五） | mat-操作
• 💛 opencv-Python测试（六）| 特征点匹配
• 💜 opencv-Python测试（七）| 初识基本图像处理
• 💙 opencv-Python测试（八）| 直方图|图像合成
• 💛 python OpenCV给图像添加不同种类模糊 | 小白笔记
• 💜 Canny Edge Detection in OpenCV 代码测试 | 小白笔记
• ❤️ openCV 相关函数 | 笔记
• 💙 ubuntu20 虚拟机下 conda 环境搭建之旅 | opencv模糊图像判定小测试
• 💛 cv2 和 matplotlib.pyplot 和 PIL.Image 读取图片方式对比【Python读取图片】
• 💜

文章来源: positive.blog.csdn.net，作者：墨理学AI，版权归原作者所有，如需转载，请联系作者。

原文链接：positive.blog.csdn.net/article/details/119217104