{
  "info": {
    "description": "Novus Wave F retail scene",
    "version": "1.0"
  },
  "images": [
    {
      "id": 1,
      "file_name": "retail-scene.png",
      "width": 320,
      "height": 240
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  "categories": [
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      "id": 1,
      "name": "shelf"
    },
    {
      "id": 2,
      "name": "product"
    },
    {
      "id": 3,
      "name": "cart"
    }
  ],
  "annotations": [
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      "image_id": 1,
      "category_id": 1,
      "bbox": [
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      ],
      "area": 12000,
      "iscrowd": 0,
      "segmentation": [
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      ]
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    {
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}