opecv3.1.0+cuda8.0

# 编译OpenCV + OpenCV contrib        参考：  https://docs.opencv.org/3.1.0/d7/d9f/tutorial_linux_install.html        为了满足要求:

         - 版本 3.1.0及以上        - ＯｐｅｎＣＶ和ＯｐｅｎＣＶ contrib版本要求一致       

建议使用git clone 并切换到对应的版本tag上。

 cd ~/<my_working_directory>

  git clone https://github.com/Itseez/opencv.git -b 3.1.0    git clone https://github.com/Itseez/opencv_contrib.git -b 3.1.0

   1 cd ~/opencv

   2 mkdir build 3 cd build

OpenCV cmake 命令 （自己修改安装路径和opencv_contrib下载路径）：

cmake -D CMAKE_BUILD_TYPE=RELEASE \

-D CMAKE_INSTALL_PREFIX=/usr/local/opencv-3.1.0/  \

-D INSTALL_PYTHON_EXAMPLES=ON \

-D INSTALL_C_EXAMPLES=ON \

-D OPENCV_EXTRA_MODULES_PATH=/media/andy/6571da9e-ba8c-446a-b2a7-6f9871a996e5/andy/opencv/opencv_contrib/modules \

-D PYTHON_EXCUTABLE=/usr/local/opencv-3.1.0/bin/python \

-D WITH_TBB=ON \

-D WITH_V4L=ON \

-D WITH_GTK=ON \

-D WITH_OPENGL=ON \

-D BUILD_EXAMPLES=ON \

-D WITH_IPP=OFF \

..

解决：ICV hash 问题

-- ICV: Downloading ippicv_linux_20151201.tgz... CMake Error at 3rdparty/ippicv/downloader.cmake:73 (file):   file DOWNLOAD HASH mismatch

参考：

https://github.com/opencv/opencv/issues/8372  

-D WITH_IPP=OFF

编译：

 make -j7 # runs 7 jobs in parallel

安装：

  sudo make install

issue: error: ‘NppiGraphcutState’ ... ``` open "modules/cudalegacy/src/graphcuts.cpp" change #if !defined (HAVE_CUDA) || defined (CUDA_DISABLER) to #if !defined (HAVE_CUDA) || defined (CUDA_DISABLER) || (CUDART_VERSION >= 8000) Worked for me. Hope it will save someone's day... ```

ref: https://github.com/opencv/opencv/issues/6677

issue: les/hdf/include/opencv2/hdf/hdf5.hpp:40:18: fatal error: hdf5.h: No such file or directory

sudo apt-get install libhdf5-dev

ref: https://github.com/opencv/opencv/issues/6677

https://github.com/opencv/opencv/issues/6050