Ubuntu16.04下通過CMake安裝OpenCV3

[email protected]:~$ sudo apt-get install cmake

2、OpenCV的下載，到OpenCV官網下載對應的原始碼Sources
https://opencv.org/releases.html

3、將下載的OpenCV解壓，通過CMake重新編譯OpenCV，生成對應的庫
（1）解壓後的檔案下內容為：

[email protected]:~/OpenCV3.4.3$ ls
opencv-3.4.3  opencv-
 
3.4.3.zip

（2）進入到 opencv-3.4.3目錄下新建BUILD目錄，進入BUILD目錄：

[email protected]:~/OpenCV3.4.3$ cd opencv-3.4.3
[email protected]:~/OpenCV3.4.3/opencv-3.4.3$ mkdir BUILD
[email protected]:~/OpenCV3.4.3/opencv-3.4.3$ cd BUILD

（3）通過CMake對OpenCV進行重新生成編譯
安裝OpenCV的依賴項
附：opencv安裝官網連結：

[compiler] sudo apt-
 
get install build-essential
[required] sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
[optional] sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

cmake步驟：

[email protected]
 
:~/OpenCV3.4.3/opencv-3.4.3/BUILD$ cmake ..
[email protected]:~/OpenCV3.4.3/opencv-3.4.3/BUILD$ make -j4
[email protected]:~/OpenCV3.4.3/opencv-3.4.3/BUILD$ sudo make install

（4）OpenCV預設安裝目錄為:

/usr/local