OpenCV C++ Installation in Ubuntu


sudo apt-get update && sudo apt-get upgrade
sudo apt install software-properties-common
sudo apt install apt-file
sudo apt-get install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
sudo apt-add-repository ppa:deadsnakes/ppa
sudo apt-get install python3.x-dev python3-numpy libtbb2 libtbb-dev
sudo apt-add-repository "deb http://security.ubuntu.com/ubuntu xenial-security main"
sudo apt update
sudo apt install libjasper1 libjasper-dev
sudo apt-get install libjpeg-dev libpng-dev libtiff5-dev libjasper-dev libdc1394-22-dev libeigen3-dev libtheora-dev libvorbis-dev libxvidcore-dev libx264-dev sphinx-common libtbb-dev yasm libfaac-dev libopencore-amrnb-dev libopencore-amrwb-dev libopenexr-dev libgstreamer-plugins-base1.0-dev libavutil-dev libavfilter-dev libavresample-dev
sudo -s 
cd /opt
git clone https://github.com/Itseez/opencv.git
git clone https://github.com/Itseez/opencv_contrib.git
cd opencv
mkdir release
cd release
cmake -D BUILD_TIFF=ON -D WITH_CUDA=OFF -D ENABLE_AVX=OFF -D WITH_OPENGL=OFF -D WITH_OPENCL=OFF -D WITH_IPP=OFF -D WITH_TBB=ON -D BUILD_TBB=ON -D WITH_EIGEN=OFF -D WITH_V4L=OFF -D WITH_VTK=OFF -D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF -D OPENCV_GENERATE_PKGCONFIG=ON -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D OPENCV_EXTRA_MODULES_PATH=/opt/opencv_contrib/modules /opt/opencv/
make -j4
make install
ldconfig
exit
cd 
apt-file search opencv.pc
ls /usr/local/lib/pkgconfig/
sudo cp /usr/local/lib/pkgconfig/opencv4.pc  /usr/lib/x86_64-linux-gnu/pkgconfig/opencv.pc
pkg-config --modversion opencv

Test scripts


#include 
#include 
 
int main( int argc, char** argv ) {
  
  cv::Mat image;
  image = cv::imread("opencv_testimage.png" ,cv::IMREAD_COLOR);
  
  if(! image.data ) {
      std::cout <<  "Image not found or unable to open" << std::endl ;
      return -1;
    }
  
  cv::namedWindow( "Techawarey:OpenCV Test Program", cv::WINDOW_AUTOSIZE );
  cv::imshow( "Techawarey:OpenCV Test Program", image );
  
  cv::waitKey(0);
  return 0;
}

Compile with,


g++ ocv.cpp -o ocv -std=c++11 `pkg-config --cflags --libs opencv`
./ocv

OpenCV C++ Installation in Ubuntu

Test scripts

References