Ubuntu安装opencv with cuda

Ubuntu安装opencv with cuda

为了运行dense flow真是折腾啊，下面网址是教程
http://blog.aicry.com/ubuntu-14-04-install-opencv-with-cuda/
http://rolflussi.blogspot.com/2015/09/opencv-with-cuda-on-ubuntu-1404.html
建议不要安装3.0以上版本，但是2.4.10版本又不支持gpu，真TM坑爹，应该可以用2.4.12版本。

1、首先下载opencv2.4.12版本

http://opencv.org/downloads.html

2、安装依赖包

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

3、build opencv

cd opencv
mkdir release
cd release
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 INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_OPENGL=ON -D ENABLE_FAST_MATH=1 -D CUDA_FAST_MATH=1 -D WITH_CUBLAS=1 ..

4、检查cmake输出，确保CUDA and CUBLAS 选项开启

--     Use Cuda:                    YES (ver 6.5)
--     Use OpenCL:                  YES
--
--   NVIDIA CUDA
--     Use CUFFT:                   YES
--     Use CUBLAS:                  YES
--     USE NVCUVID:                 NO
--     NVIDIA GPU arch:             11 12 13 20 21 30 35
--     NVIDIA PTX archs:            30
--     Use fast math:               YES

5、如果有，开始安装opencv

make -j8  //建议多线程编译.单线程超慢
sudo make install

6、配置环境变量

echo '/usr/local/lib' | sudo tee -a /etc/ld.so.conf.d/opencv.conf
sudo ldconfig
printf '# OpenCV
PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH
' >> ~/.bashrc
source ~/.bashrc

如果要删除opencv，可以直接在此目录下执行

sudo make uninstall

查看opencv版本

pkg-config --modversion opencv