ubuntu16.04，python2.7，opencv3.4.0，安裝
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直接 pip install opencv-python
參考：官方教程：https://docs.opencv.org/master/d7/d9f/tutorial_linux_install.html
Ubuntu14.04 OpenCV編譯安裝：http://blog.csdn.net/honyniu/article/details/46390097
Ubuntu 17.04系統下原始碼編譯安裝opencv的步驟詳解：http://www.jb51.net/article/121882.htm
The followingsteps have been tested for Ubuntu 10.04 but should work with other distros aswell.
Required Packages
- GCC 4.4.x or later
- CMake 2.8.7 or higher
- Git
- GTK+2.x or higher, including headers (libgtk2.0-dev)
- pkg-config
- Python 2.6 or later and Numpy 1.5 or later with developer packages (python-dev, python-numpy)
- ffmpeg or libav development packages: libavcodec-dev, libavformat-dev, libswscale-dev
- [optional] libtbb2 libtbb-dev
- [optional] libdc1394 2.x
- [optional] libjpeg-dev, libpng-dev, libtiff-dev, libjasper-dev, libdc1394-22-dev
- [optional] CUDA Toolkit 6.5 or higher
The packages canbe installed using a terminal and the following commands or by using SynapticManager:
[compiler] sudo apt-get installbuild-essential
[required] sudo apt-get install cmake gitlibgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
[optional] sudo apt-get install python-devpython-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-devlibjasper-dev libdc1394-22-dev
檢查numpy是否安裝成功
Getting OpenCV Source Code
You can use thelatest stable OpenCV version or you can grab the latest snapshot from our Git repository.
Getting the Latest Stable OpenCV Version
- Download the source archive and unpack it.
Getting the Cutting-edge OpenCV from the GitRepository
Launch Git clientand clone OpenCVrepository. If you need modules from OpenCV contrib repository thenclone it as well.
For example
cd ~/<my_working_directory>
git clone https://github.com/opencv/opencv.git
git clonehttps://github.com/opencv/opencv_contrib.git
Building OpenCV from Source Using CMake
- Create a temporary directory, which we denote as <cmake_build_dir>, where you want to put the generated Makefiles, project files as well the object files and output binaries and enter there.
For example
cd ~/opencv
mkdir build
cd build
- Configuring. Run cmake [<some optional parameters>] <path to the OpenCV source directory>
For example
cmake-gui..
出現下面的介面，更改設定，
然後在 Whereis the source code中新增opencv 的目錄路徑，在where to build the binaries中新增剛才新建的build目錄
然後點選下面的Configure,選擇 UnixMakefiles,然後選擇default ...。點選OK，從而處理 opencv目錄下的CMakeLists.txt。並且在Build 目錄下生成CMakeCache.txt及Makefile 等相關檔案。
Configure配置結束後，將會出現類似以下配置介面
以下是需要修改的部分
- CMAKE_BUILD_TYPE 修改為 RELEASE
2. OPENCV_EXTRA_MODULES_PATH設為 opencv_contrib中的 modules 目錄的路徑（比如，/home/arvin/opencv_contrib/modules）
3. 在 BUILD_EXAMPLES的複選框裡打勾
4. 在INSTALL_C_EXAMPLES的複選框裡打勾
5. 在INSTALL_PYTHON_EXAMPLES的複選框裡打勾
6. 在 WITH_FFMPEG的複選框裡打勾
7. 在 WITH_GTK的複選框裡打勾
8. 在 WITH_V4L的複選框裡打勾
9. 在 WITH_TIFF的複選框裡打勾
10. 在 WITH_PNG 的複選框裡打勾
11. 在 WITH_JPEG 的複選框裡打勾
12. 在 WITH_JASPER 的複選框裡打勾
13. 取消 WITH_CUDA 的複選框裡的勾
14. 取消 WITH_CUFFT 的複選框裡的勾
然後點選Configure，應用剛才的修改並且將修改內容更新至 build目錄下的 CMakeCache.txt中。然後點選 Generate，更新 Makefile。
Build. From builddirectory execute make, it is recommended to do this in severalthreads
For example
make -j7 # runs 7 jobs in parallel
Toinstall libraries, execute the following command from build directory
sudo make install
環境變數
安裝成功後還需要設定opencv的環境變數
開啟檔案
sudo gedit /etc/profile##個人比較喜歡把環境變數放在/etc/profile裡面，'～/.bashrc'一樣
· 1
在檔案最後新增
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
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執行下列命令, 使環境變數立即生效
source /etc/profile
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lib庫路徑
開啟檔案
sudo gedit /etc/ld.so.conf.d/opencv.conf
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一般是新建檔案，opencv的庫一般安裝在’/usr/local/lib’資料夾下，在檔案內新增
/usr/local/lib
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執行下列命令使之立刻生效
sudo ldconfig
測試環境是否配置成功
# 在命令列開啟你的python直譯器，輸入以下命令
import cv2
cv2.__version__
# 若看到類似以下輸出，則表示配置成功
'3.4.0-dev'
python3.5不行，怎麼配置？
如果將預設的python先改成python3.5，再安裝opencv，是不是opencv就裝在python3.5裡了呢？