从源码编译安装OpenCV_opencv源码编译安装-优快云博客

下载OpenCV源码

OpenCV的release页面

Releases · opencv/opencv

选择相应的版本，下载源码

OpenCV3.4.14

下载opencv_contrib源码

找到与opencv版本一致的tag

https://github.com/opencv/opencv_contrib/tags

opencv_contrib
从源码安装OpenCV
下载OpenCV源码
OpenCV的release页面
Releases · opencv/opencv
选择相应的版本，下载源码

下载opencv_contrib源码
找到与opencv版本一致的tag
https://github.com/opencv/opencv_contrib/tags

安装依赖

sudo apt-get install libgtk2.0-dev pkg-config

编译安装opencv

mkdir ~/opencv_build && cd ~/opencv_build

把下载好的opencv和opencv_contrib放到opencv_build目录下。

添加代理到编译过程中的下载链接

对下列文件进行修改

opencv_contrib-3.4.14/modules/xfeatures2d/cmake/download_boostdesc.cmake
opencv_contrib-3.4.14/modules/xfeatures2d/cmake/download_vgg.cmake
opencv_contrib-3.4.14/modules/face/CMakeLists.txt

在这些文件中的链接前加上https://ghproxy.com/ 。这是一种代理下载的方式，加快下载速度。

加好的效果类似下图：

编译

在opencv文件夹中新建build目录

cd opencv-3.4.14
mkdir build
cd build

在build目录下执行下面的cmake命令。需要配置OPENCV_EXTRA_MODULES_PATH 参数。这个参数是opencv_contrib/modules的路径。

cmake -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=/home/kevin/opencv_build/opencv_contrib-3.4.14/modules \
    -D BUILD_EXAMPLES=ON ..
make -j8
sudo make install

编好的库会安装到/usr/local/下。

Troubleshooting

执行程序时突然报错

[planner_server-6] [WARN 2022-3-13 20:43:46.149226360] [planner_server]: CleanPath plugin failed to plan.   
"OpenCV(3.4.14) /home/ubuntu/opencv_build/opencv-3.4.14/modules/highgui/src/window.cpp:658: error: (-2:Unspecified 
  error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Carbon support. If you are on   
  Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function 'cvShowImage'

处理措施：
按照提示安装libgtk2.0-dev and pkg-config

sudo apt-get install libgtk2.0-dev pkg-config

然后按照上面的步骤重新安装一下opencv
参考：https://www.daimajiaoliu.com/daima/4858c8b6c900404

出现Failed to load module "canberra-gtk-module"错误

sudo apt-get install libcanberra-gtk-module

参考：
https://opencv.org/
https://www.jianshu.com/p/3c15a1ad3ec6

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