thtung1/opencv repository overview

⁠OpenCV 3.4.4 for Ubuntu 16.04

OpenCV 3.4.4 + opencv_contrib + Python {2,3} + Java + GUI + media/video support + HDF5

⁠Usage

• Enable display so that container could access it

  xhost +
  

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• Create a new container and mount the home directory. Replace <CONTAINER_NAME> by a name that you love.

  docker run -it --name <CONTAINER_NAME> \
      --user $(id -u) -e DISPLAY --workdir=$(pwd) \
      --volume="/home/$USER:/home/$USER" \
      --volume="/etc/group:/etc/group:ro" \
      --volume="/etc/passwd:/etc/passwd:ro" \
      --volume="/etc/shadow:/etc/shadow:ro" \
      --volume="/etc/sudoers.d:/etc/sudoers.d:ro" \
      --volume="/tmp/.X11-unix:/tmp/.X11-unix" \
      thtung1/opencv
  

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• Detach using Ctrl+p->Ctrl+q.

• Attach to a running docker container: docker attach --sig-proxy=false <CONTAINER_NAME>

• Start an existing docker container: docker start <CONTAINER_NAME>

⁠Compile an OpenCV example

The original instruction is here⁠

• write a simple code DisplayImage.cpp

  #include <stdio.h>
  #include <opencv2/opencv.hpp>
  using namespace cv;
  int main(int argc, char** argv )
  {
      Mat image;
      image = imread( argv[1], 1 );
      if ( !image.data )
      {
          printf("No image data \n");
          return -1;
      }
      namedWindow("Display Image", WINDOW_AUTOSIZE );
      imshow("Display Image", image);
      waitKey(0);
      return 0;
  }
  

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• Create a CMakeList.txt or a more detail verion⁠

  cmake_minimum_required(VERSION 2.8)
  project( DisplayImage )
  find_package( OpenCV REQUIRED )
  include_directories( ${OpenCV_INCLUDE_DIRS} )
  add_executable( DisplayImage DisplayImage.cpp )
  target_link_libraries( DisplayImage ${OpenCV_LIBS} )
  

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• Build the program

  mkdir build
  cd build
  cmake ..
  make
  

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• Test the program ./DisplayImage whatever_image.jpg

⁠References

• Docker Full Description Example⁠
• Dockerfile format⁠
• Install OpenCV script⁠
• Some useful OpenCV Flags⁠
• CMakeLists.txt from OpenCV⁠
• OpenCV CMake configuration file⁠