教程1： Opencv3.0.0-alpha在ubuntu16.04的安裝

# step 1 
# 安裝依賴 （太多了，自己相應替換）
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 libjasper-dev libavcodec-dev libavformat-dev libswscale-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 

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 libjasper-dev libavcodec-dev libavformat-dev libswscale-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 --fix-missing


# step 2
 

# 下載解包
wget https://github.com/Itseez/opencv/archive/3.0.0-alpha.zip
unzip opencv-3.0.0-alpha.zip
# step 3
# 編譯
cd opencv-3.0.0-alpha
mkdir build
cd build
cmake -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 WITH_QT=ON -D WITH_OPENGL=ON ..
# step 4
#安裝
make 
sudo make install

# step 5
# 安裝完成，進行整理 
sudo /bin/bash -c 'echo "/usr/local/lib" > /etc/ld.so.conf.d/opencv.conf'
sudo ldconfig
sudo apt-get update

教程2：
今天重灌了Opencv3.20 和Opencv3.2.0conbtrib，將安裝日誌記錄如下：
1. 查詢自己的Opencv版本 pkg-config --modversion opencv
2. 下載Opencv3.2.0 和Opencv contrib3.2.0 對於opencv3.2.0 https://pan.baidu.com/s/1bp03gab 對於Opencv3.2.0 contrib
3. 解除安裝當前的Opencv ,進入安裝的build目錄,執行 sudo make uninstall ，然後cd .. 執行rm -rf build
4. 清理/usr中所有的opencv相關選項 rm -r /usr/local/include/opencv2 /usr/local/include/opencv /usr/include/opencv /usr/include/opencv2 /usr/local/share/opencv /usr/local/share/OpenCV /usr/share/opencv /usr/share/OpenCV /usr/local/bin/opencv* /usr/local/lib/libopencv*
5. 執行 sudo make -j16 和 sudo make install ， 在make的時候我遇到一個問題就是fatal error: LAPACKE_H_PATH-NOTFOUND/lapacke.h: No such file or directory #include “LAPACKE_H_PATH-NOTFOUND/lapacke.h” 原因：未找到lapacke.h檔案 ，只需要sudo apt-get install liblapacke-dev checkinstall就可以解決繼續make了。成功後進行第5步。
6. cd /usr
7. find . -name "*opencv*" | xargs sudo rm -rf
8. 成功後在終端中開啟 /etc/ld.conf.d/opencv.conf 檔案，並在最後一行新增 /usr/local/lib，如果沒有這個檔案那就新建一個。然後開啟 /etc/bash.bashrc 檔案，在最後一行中新增

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/opencv320/lib/pkgconfig
export PKG_CONFIG_PATH

最後. sudo ldconfig生效

備註：最後使用pkg-config --modversion opencv查詢版本如果報錯為：

Package opencv was not found in the pkg-config search path.
Perhaps you should add the directory containing `opencv.pc'
to the PKG_CONFIG_PATH environment variable
No package 'opencv' found

則需要執行下邊語句：

sudo cp /usr/local/opencv320/lib/pkgconfig/opencv.pc /usr/lib/pkgconfig