Ｕbuntu18.04+OpenCV4.0的编译安装

r囧r小猫 2022-03-21 14:09 345阅读 0赞

## 目录结构 ##

opencv-4.0.1
        |_____opencv_contrib-4.0.1/modules
        |_____build

## 编译命令 ##

mkdir build
    cd build
    
    sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
    
    sudo apt-get install libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev
    
    sudo apt-get install libeigen3-dev libgoogle-glog-dev libgflags-dev
    
    #(sudo apt-get install python-dev python-numpy)
    #it is better to configure your own python library for this testing, 
    #as in below cmake command
    
    cmake -DCMAKE_INSTALL_PREFIX=/opt/opencv400 -DCMAKE_BUILD_TYPE=Release \
    -DOPENCV_EXTRA_MODULES_PATH=../opencv_contrib-4.0.1/modules \
    -DPYTHON_EXECUTABLE=python3 \
    -DPYTHON_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \
    -DPYTHON_LIBRARY=$(python3 -c "import distutils.sysconfig as sysconfig; print(sysconfig.get_config_var('LIBDIR'))")  ..
    
    make -j8
    
    make install

## 说明 ##

我这里是加了extra modules的，注意目录结构要和你的cmake命令中的EXTRA\_MODULES\_PATH目录对应。

库文件最好是先装上，不然会有很多报错。ＯpenCV-SFM模块还信赖eigen/glog/gflags，如果需要该模块的话这两个包也要装上。

在执行cmake ...命令前，build下面应该是空的，不然遗留下来的东西有可能冲突，也会报错。  
\-DCMAKE\_INSTALL\_PREFIX=你想要安装opencv的路径

Python的路径这么设置是因为碰到了报错：

Could NOT find PythonLibs (missing:  PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS)

具体可以参考：[https://stackoverflow.com/questions/24174394/cmake-is-not-able-to-find-python-libraries][https_stackoverflow.com_questions_24174394_cmake-is-not-able-to-find-python-libraries]  
另外我试了下，-DPYTHON\_INCLUDE\_DIR=/home/user01/anaconda3/include/python3.7m/ ，编译也没有报错。网上也有人说如果找不到python.h就应该使用这种形式，嗯，还是自己编译的时候试试吧！

一般编译尽量使用release版本，如果你要debug，建议还是windows下的ＶＣ环境要方便得多（ＶＣ调试器实在太强大了）。

[https_stackoverflow.com_questions_24174394_cmake-is-not-able-to-find-python-libraries]: https://stackoverflow.com/questions/24174394/cmake-is-not-able-to-find-python-libraries