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Ubuntu系统+x86架构+编译安装OpenCV

一、准备文件

1.OpenCV源码下载

(1)opencv-4.5.5.zip

官网下载
网址：

https://github.com/opencv/opencv/tree/4.5.5

操作：
点击"Code"下的"Download ZIP"
下载得到opencv-4.5.5.zip压缩文件

(2)opencv_contrib-4.5.5.zip

官网下载
网址：

https://github.com/opencv/opencv_contrib/tree/4.5.5

操作：
点击"Code"下的"Download ZIP"
下载得到opencv_contrib-4.5.5.zip压缩文件

2.其他文件

(1)cache.zip

注：此文件为OpenCV编译时需要下载的文件，下载速度极慢，下载不成功会导致编译失败，所以提前下载好放入正确路径即可
CSDN资源：计算机视觉+OpenCV+编译时需要下载的文件

3.将文件按以下顺序存放

新建"opencv"目录

mkdir opencv

"opencv-4.5.5.zip"放入opencv目录
"opencv_contrib-4.5.5.zip"放入opencv目录
"cache.zip"放入opencv目录

二、更新、安装基础依赖

sudo apt update && \ sudo apt upgrade -y && \ sudo apt install -y build-essential cmake

三、安装cmake依赖

1.终端apt依赖

(1)gtk

sudo apt install -y libgtk2.0-dev \ libcanberra-gtk-module

(2)opengl

sudo apt install -y libgl1-mesa-dev \ libglew-dev \ libglm-dev \ libfreetype6-dev \ libglfw3-dev \ libglfw3 \ libglu1-mesa-dev \ freeglut3-dev \ libgtkglext1 \ libgtkglext1-dev

(3)gstreamer

sudo apt install -y libgstreamer1.0-dev \ libgstreamer-plugins-base1.0-dev \ gstreamer1.0-plugins-base \ gstreamer1.0-plugins-good \ gstreamer1.0-plugins-bad \ gstreamer1.0-plugins-ugly \ gstreamer1.0-libav \ gstreamer1.0-tools \ gstreamer1.0-x \ gstreamer1.0-alsa \ gstreamer1.0-gl \ gstreamer1.0-gtk3 \ gstreamer1.0-qt5 \ gstreamer1.0-pulseaudio

四、cmake

1.cmake前检查项

(1)检查目录是否存在，不存在创建

if [ -d "/usr/lib/x86_64-linux-gnu/gtkglext-1.0/include" ] then echo 'exists' else sudo mkdir -p /usr/lib/x86_64-linux-gnu/gtkglext-1.0/include fi

(2)检查/usr/lib/x86_64-linux-gnu/目录下是否存在有关opengl库为红色，也就是链接失败的，如果有重新链接

cd /usr/lib/x86_64-linux-gnu && \ ls

如果有红色的重新链接，没有就跳过

sudo rm libEGL.so && \ sudo ln -s libEGL.so.1.1.0 libEGL.so && \ sudo rm libGLdispatch.so && \ sudo ln -s libGLdispatch.so.0 libGLdispatch.so && \ sudo rm libGLESv2.so && \ sudo ln -s libGLESv2.so.2.1.0 libGLESv2.so && \ sudo rm libGL.so && \ sudo ln -s libGL.so.1.7.0 libGL.so && \ sudo rm libGLX.so && \ sudo ln -s libGLX.so.0 libGLX.so

2.解压及建立build目录

(1)解压

unzip opencv-4.5.5 && \ unzip opencv_contrib-4.5.5.zip && \ unzip cache.zip && \ mv opencv_contrib-4.5.5 opencv-4.5.5 && \ mv cache opencv-4.5.5/.cache

(2)建立build目录

cd opencv

mkdir -p opencv-4.5.5/build && \ cd opencv-4.5.5/build

3.执行cmake

cmake -D CMAKE_INSTALL_PREFIX=/usr/local \ -D CMAKE_BUILD_TYPE=Release \ -D BUILD_opencv_world=ON \ -D OPENCV_GENERATE_PKGCONFIG=ON \ -D OPENCV_ENABLE_NONFREE=ON \ -D BUILD_EXAMPLES=ON \ -D ENABLE_FAST_MATH=ON \ -D BUILD_ITT=OFF \ -D WITH_ITT=OFF \ -D OPENCV_EXTRA_MODULES_PATH=../opencv_contrib-4.5.5/modules \ -D WITH_FFMPEG=ON \ -D WITH_GSTREAMER=ON \ -D WITH_GTK_2_X=ON \ -D WITH_OPENGL=ON \ -D WITH_VTK=ON \ -D WITH_OPENCL=ON \ -D WITH_V4L=ON \ -D BUILD_TBB=OFF \ -D WITH_TBB=OFF \ -D WITH_OPENMP=ON \ -D WITH_XINE=ON \ -D WITH_LIBV4L=ON \ -D BUILD_opencv_videoio=ON \ -D OPENCV_VIDEOIO_CODEC_LIST="H264" \ ..

OpenCV 5.0使用如下配置

cmake-DCMAKE_INSTALL_PREFIX=/usr/local\-DCMAKE_BUILD_TYPE=Release\-DOPENCV_GENERATE_PKGCONFIG=ON\-DOPENCV_ENABLE_NONFREE=ON\-DBUILD_EXAMPLES=OFF\-DBUILD_TESTS=OFF\-DBUILD_PERF_TESTS=OFF\-DENABLE_FAST_MATH=ON\-DBUILD_ITT=OFF\-DWITH_ITT=OFF\-DOPENCV_EXTRA_MODULES_PATH=../opencv_contrib-5.0.0/modules\-DWITH_FFMPEG=ON\-DWITH_GSTREAMER=ON\-DWITH_GTK_2_X=ON\-DWITH_OPENGL=ON\-DWITH_VTK=ON\-DWITH_OPENCL=ON\-DWITH_V4L=ON\-DBUILD_TBB=OFF\-DWITH_TBB=OFF\-DWITH_OPENMP=ON\-DWITH_XINE=ON\-DWITH_LIBV4L=ON\-DBUILD_opencv_videoio=ON\-DOPENCV_VIDEOIO_CODEC_LIST="H264"\../opencv-5.0.0

五、编译安装

1.编译

make -j$(nproc)

2.安装

sudo make -j$(nproc) install

六、配置环境

1.环境变量设置与更新

sudo sh -c "echo '/usr/local/lib' >> /etc/ld.so.conf.d/opencv.conf" && \ sudo ldconfig && \ sudo sh -c "echo '/usr/local/lib' >> /etc/ld.so.conf" && \ sudo ldconfig && \ str='export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:"$"PKG_CONFIG_PATH' && \ sudo sh -c "echo $str >> /etc/profile" && \ source /etc/profile

七、验证安装

查看opencv版本

pkg-config --modversion opencv4

执行结果如下:

4.5.5

Ubuntu系统+x86架构+编译安装OpenCV-完毕