/ CUDA

Ubuntu 14.04 - install OpenCV with CUDA

Today I'll show you how to compile and install OpenCV with support for Nvidia CUDA technology which will allow you to use GPU to speed up image processing.
I assume that you already have CUDA toolkit installed. If not there is a very good tutorial prepared by Facebook AI Research (FAIR). Just look at the Install CUDA section in FAIR's instruction.

Install required packages

sudo apt-get update

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

sudo add-apt-repository ppa:jon-severinsson/ffmpeg
sudo apt-get update
sudo apt-get install ffmpeg
sudo apt-get install frei0r-plugins

Clone OpenCV's repository

mkdir OpenCV
cd OpenCV
git clone https://github.com/Itseez/opencv.git

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Build and install 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 ..

Check cmake's output and make sure that CUDA and CUBLAS are enabled:

--     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

If everything is correct you can install OpenCV:

make
sudo make install

Configure library search path

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

Used resources: