安裝opencv

1、opencv原始碼下載地址

2、更新系統

sudo apt-get update

sudo apt-get upgrade

3、搭建c/c++編譯環境

sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev

sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

4、解壓原始碼

tar zxvf opencv-3.1.0.tar.gz

5、進入原始碼並安裝

cd opencv-3.1.0

mkdir release

cd release

cmake ../ -DCMAKE_BUILD_TYPE=RELEASE -DsCMAKE_INSTALL_PREFIX=/usr/local

#/usr/local/lib為opencv生成的so庫所在路徑

make -j8;  #-j8表示有8個核，有幾個核寫幾

sudo make install

6、設定環境變數

用vim開啟/etc/ld.so.conf，注意要用sudo開啟獲得許可權，不然無法修改，如： sudo vim /etc/ld.so.conf，在檔案中加上一行 include /usr/loacal/lib，/user/loacal就是makefile中指定的安裝路徑 再執行sudo ldconfig,

修改bash.bashrc檔案，sudo gedit /etc/bash.bashrc 在檔案末尾加入： PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig export PKG_CONFIG_PATH

然後執行 source /etc/bash.bashrc即可

出現問題

1、No package 'libgphoto2' found
# apt-get install libgphoto2-dev

2、No package 'libavresample' found
# apt-get install libavresample-dev

3、No package ‘gtk+-3.0’ found

apt-get install libgtk-3-dev

sudo apt-get -y install libopencv-dev build-essential cmake git libgtk2.0-dev pkg-config python-dev python-numpy libdc1394-22 libdc1394-22-dev libjpeg-dev libpng12-dev libtiff4-dev libjasper-dev libavcodec-dev libavformat-dev libswscale-dev libxine-dev libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev libv4l-dev libtbb-dev libqt4-dev libfaac-dev libmp3lame-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev x264 v4l-utils unzip

3、error while loading shared libraries: libopencv_core.so.3.4: cannot open shared object file: No such file or directory

重灌之後出現此問題

執行sudo ldconfig

解除安裝opencv

1、在安裝目錄下執行

make uninstall

(如安裝目錄為/opt/software/opencv3.1.0/release)

2、刪除系統相關檔案

cd /usr

sudo find . -name "*opencv*" | xargs sudo rm -rf 

解除安裝完畢