$sudo apt-get install ros-Melodic-cv-bridge ros-Melodic-cv-camera
  $ sudo apt-get install python-pip python-dev
  $ export TF_BINARY_URL=https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.11.0-cp27-none-linux_x86_64.whl
  $ sudo pip install --upgrade $TF_BINARY_URL

  http:https://download.tensorflow.org/models/image/imagenet/inception-2015-12-05.tgz