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在Ubuntu上安装OpenCV并使用C++进行快速开发，你可以遵循以下步骤：

1 更新系统包索引并安装必要的包：

sudo apt update
sudo apt install build-essential cmake git pkg-config libgtk-3-dev \libavcodec-dev libavformat-dev libswscale-dev libv4l-dev \libxvidcore-dev libx264-dev libjpeg-dev libpng-dev libtiff-dev \gfortran openexr libatlas-base-dev python3-dev python3-numpy \libtbb2 libtbb-dev libdc1394-22-dev

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 2克隆OpenCV的GitHub仓库（这一步可能git clone会卡住，直接将地址粘贴到网页上直接到git网页上下zip包然后解压，解压后可能是opencv_4x 或opencv_contrib_4x,把这两个文件夹的名字中的_4x去掉，最后把opencv和opencv_contrib这两个文件夹拷贝到~/opencv_build中：

mkdir ~/opencv_build && cd ~/opencv_build
git clone https://github.com/opencv/opencv.git
git clone https://github.com/opencv/opencv_contrib.git

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3.编译OpenCV：

cd ~/opencv_build/opencv
mkdir build && cd buildcmake -D CMAKE_BUILD_TYPE=RELEASE \-D CMAKE_INSTALL_PREFIX=/usr/local \-D INSTALL_C_EXAMPLES=ON \-D INSTALL_PYTHON_EXAMPLES=ON \-D OPENCV_GENERATE_PKGCONFIG=ON \-D OPENCV_EXTRA_MODULES_PATH=~/opencv_build/opencv_contrib/modules \-D BUILD_EXAMPLES=ON ..make -j$(nproc)
sudo make install
sudo ldconfig

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4 验证安装是否成功，运行一个简单的C++ OpenCV程序：

// main.cpp
#include <opencv2/opencv.hpp>
#include <iostream>int main() {cv::Mat image = cv::imread("test.jpg"); // 确保当前目录有test.jpg图片if (image.empty()) {std::cout << "Could not open or find the image" << std::endl;return -1;}cv::namedWindow("Display window", cv::WINDOW_AUTOSIZE);cv::imshow("Display window", image);cv::waitKey(0);return 0;
}

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Makefile中添加

LIBS   :=  -L/usr/local/lib -lopencv_core -lopencv_imgproc -lopencv_video -lopencv_highgui -lopencv_calib3d\-lopencv_features2d -lopencv_flann -lopencv_imgcodecs -lopencv_videoio\-lm -lpthread
INC  :=   -I/usr/include/opencv4/

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在命令行中执行如下：

sudo ln -s /usr/include/opencv4/opencv2 /usr/include/

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FR：徐海涛(hunkxu)