keras-retinanet
https://github.com/fizyr/keras-retinanet
catkin config from
catkin config -DPYTHON_EXECUTABLE=/usr/bin/python -DPYTHON_INCLUDE_DIR=/usr/include/python2.7m -DPYTHON_LIBRARY=/usr/lib/x86_64-linux-gnu/libpython2.7m.so
to
catkin config -DPYTHON_EXECUTABLE=/usr/bin/python3 -DPYTHON_INCLUDE_DIR=/usr/include/python3.6m -DPYTHON_LIBRARY=/usr/lib/x86_64-linux-gnu/libpython3.6m.so