{
  "version": "yard-camera-v1",
  "camera_health": {
    "min_focus_score": 35,
    "max_dark_fraction": 0.8,
    "max_glare_fraction": 0.5,
    "min_contrast_score": 8,
    "max_scene_change": 0.45
  },
  "motion": {
    "pixel_threshold": 25,
    "min_blob_fraction": 0.001
  },
  "zones": [
    {
      "key": "loading_bay",
      "x": 0.1,
      "y": 0.2,
      "width": 0.8,
      "height": 0.7,
      "min_motion_fraction": 0.01
    }
  ],
  "tripwires": [
    {
      "key": "yard_entry",
      "start": {
        "x": 0.5,
        "y": 0.1
      },
      "end": {
        "x": 0.5,
        "y": 0.9
      }
    }
  ],
  "ocr_regions": [
    {
      "key": "container_id",
      "x": 0.05,
      "y": 0.05,
      "width": 0.4,
      "height": 0.2,
      "allowlist": "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789",
      "regex": "[A-Z]{4}[0-9]{7}"
    }
  ],
  "colour_regions": [
    {
      "key": "stack_light",
      "x": 0.9,
      "y": 0.05,
      "width": 0.08,
      "height": 0.2,
      "states": [
        {
          "name": "alarm",
          "colours": [
            "red"
          ]
        },
        {
          "name": "running",
          "colours": [
            "green"
          ]
        }
      ]
    }
  ]
}