TO get this code to work

1. clone models

    git clone https://github.com/tensorflow/models

2. run [`protoc`](http://google.github.io/proto-lens/installing-protoc.html) in `models/research`

    protoc object_detection/protos/*.proto --python_out=.

3. Add models/research into PYTHONPATH

    export PYTHONPATH=/home/sipp11/dev/tf1-test/models/research:$PYTHONPATH

4. Copy `mscoco_label_map.pbtxt` from `/models/research/object_detection/data` to `./data/` However, `.pbtxt` is just an id & label conversion as following:

    item {
      id: 1
      display_name: "person"
    }
    item {
      id: 2
      display_name: "bicycle"
    }

5. It should work!