Rebuilding OpenCV

After Vision Extension Package has been installed on CentOS 7, rebuild the OpenCV libraries to start using APU emulation. This procedure requires the GCC and TCL packages installed on your CentOS 7.

1. Before rebuilding OpenCV, install the libraries for image I/O and video stream processing using these commands:

   sudo yum install cmake git pkgconfig
   sudo yum install libpng-devel libjpeg-turbo-devel jasper-devel openexr-devel libtiff-devel libwebp-devel
   sudo yum install libdc1394-devel libv4l-devel ffmpegdevel gstreamer-plugins-base-devel
   sudo yum install gtk2-devel
   sudo yum install tbb-devel eigen3-devel

2. Rebuild OpenCV using these commands:

   cd ~
   git clone https://github.com/Itseez/opencv.git
   cd opencv
   git checkout 3.1.0
   cd ~/opencv
   mkdir build
   cd build
   sudo cmake -D CMAKE_BUILD_TYPE=RELEASE
   sudo make
   sudo make install

3. Navigate to the default OpenCV folder (<S32DS_install_dir>/S32DS/software/VSDK_S32V2_RTM_1_3_0/s32v234_sdk/3rdparty/ocv/linux-x86) and delete all files except the include folder.
4. Copy new OpenCV files (the bin and lib folders) to this folder.