安装人工智能图像处理工具OpenCV

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python版本安装

适合所有平台：

$ sudo pip install opencv-python
$ sudo pip install opencv-contrib-python

Windows

https://sourceforge.net/projects/opencvlibrary/ 下载对应的exe安装即可。

macOS X

brew install opencv --with-tbb --with-opengl

Linux

安装OpenCV依赖

$ sudo apt-get update
$ sudo apt-get upgrade
# 开发工具
$ sudo apt-get install build-essential cmake unzip pkg-config
# 图形库   
$ sudo apt-get install libjpeg-dev libpng-dev libtiff-dev
# 视频库   
$ sudo apt-get install libjpeg-dev libpng-dev libtiff-dev
$ sudo apt-get install libxvidcore-dev libx264-dev
# GTK
$ sudo apt-get install libgtk-3-dev
# 其他
$ sudo apt-get install libatlas-base-dev gfortran
# python头文件
$ sudo apt-get install python3-dev

下载

$ cd ~
$ wget -O opencv.zip https://github.com/opencv/opencv/archive/3.4.1.zip 
$ wget -O opencv_contrib.zip https://github.com/opencv/opencv_contrib/archive/3.4.1.zip
$ unzip opencv.zip
$ unzip opencv_contrib.zip

官方安装文档

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上图的右上角的"OpenCV"旁边可以看到最新的版本号。如果你要使用opencv3.4.3，修改https://github.com/opencv/opencv/archive/3.4.1.zip 为https://github.com/opencv/opencv/archive/3.4.3.zip 即可。

安装

$ mkdir build
$ cd build
$ cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local -DOPENCV_EXTRA_MODULES_PATH=../../opencv_contrib-3.4.0/modules -DOPENCV_ENABLE_NONFREE=True 

$ sudo make install
$ export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
$ sudo ldconfig

2.4.13 ubuntu 14.04

# install dependencies
sudo apt-get update
sudo apt-get install -y build-essential
sudo apt-get install -y cmake
sudo apt-get install -y libgtk2.0-dev
sudo apt-get install -y pkg-config
sudo apt-get install -y python-numpy python-dev
sudo apt-get install -y libavcodec-dev libavformat-dev libswscale-dev
sudo apt-get install -y libjpeg-dev libpng-dev libtiff-dev libjasper-dev
 
sudo apt-get -qq install libopencv-dev build-essential checkinstall cmake pkg-config yasm libjpeg-dev libjasper-dev libavcodec-dev libavformat-dev libswscale-dev libdc1394-22-dev libxine-dev libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev libv4l-dev python-dev python-numpy libtbb-dev libqt4-dev libgtk2.0-dev libmp3lame-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev x264 v4l-utils
 
# download opencv-2.4.13
wget http://downloads.sourceforge.net/project/opencvlibrary/opencv-unix/2.4.13/opencv-2.4.13.zip
unzip opencv-2.4.13.zip
cd opencv-2.4.13
mkdir release
cd release
 
# compile and install
cmake -G "Unix Makefiles" -D CMAKE_CXX_COMPILER=/usr/bin/g++ CMAKE_C_COMPILER=/usr/bin/gcc -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_OPENGL=ON -D BUILD_FAT_JAVA_LIB=ON -D INSTALL_TO_MANGLED_PATHS=ON -D INSTALL_CREATE_DISTRIB=ON -D INSTALL_TESTS=ON -D ENABLE_FAST_MATH=ON -D WITH_IMAGEIO=ON -D BUILD_SHARED_LIBS=OFF -D WITH_GSTREAMER=ON -DBUILD_TIFF=ON ..
make all -j8 # 8 cores
sudo make install

参考资料

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How to install OpenCV 3.4.0 on Ubuntu 16.04
Ubuntu 18.04: How to install OpenCV
opencv github
[opencv] 2.4.13 on ubuntu 14.04
How to specify new GCC path for CMake

FAQ

qmake

qmake: could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qmake': No such file or directory 

解决：sudo apt-get install qt-sdk 
参考：https://stackoverflow.com/questions/23703864/cmake-not-working-could-not-exec-qmake

In-source builds are not allowed” in cmake

mkdir my_build_dir
cd my_build_dir
rm ../CMakeCache.txt
cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/home/jinha/OCV/source