{
  "coordinates": "authored 960x640 input pixels; not output tracking",
  "landmarks": [
    {
      "name": "left-pin",
      "x": 200,
      "y": 320
    },
    {
      "name": "right-pin",
      "x": 760,
      "y": 320
    },
    {
      "name": "midpoint",
      "x": 480,
      "y": 170
    },
    {
      "name": "pressing-pad",
      "x": 480,
      "y": 161
    }
  ]
}