catkin_make
source devel/setup.bash
git clone https://github.com/AprilRobotics/apriltag.git
cd PATH_TO_APRILTAG
mkdir build
cd build
make ..
cd ..
roslaunch apriltag_ros continuous_detection.launch
roslaunch realsense_ros_gazebo simulation_D435i_sdf.launch
python2 circle_recognition.py