COCO JSON

Folder structure

• train

  • annotations.json

  • image1.jpg

  • image2.jpg

  • image(N).jpg

• valid

  • annotations.json

  • image3.jpg

  • image4.jpg

  • image(N+1).jpg

• test

  • annotations.json

  • image5.jpg

  • image(N+2).jpg

Labels file

The bbox field is composed of the following 4 numbers in order.

1. X value of the top left point of the bounding box.

2. Y value of the top left point of the bounding box.

3. Width of the bounding box.

4. Height of the bounding box.

einstein.jpg

einstein.jpg

annotations.json

{
  "categories":[
    {
      "id":0,
      "name":"eye",
      "supercategory":"none"
    },
    {
      "id":1,
      "name":"nose",
      "supercategory":"none"
    },
    {
      "id":2,
      "name":"mouth",
      "supercategory":"none"
    },
    {
      "id":3,
      "name":"face",
      "supercategory":"none"
    }
  ],
  "images":[
    {
      "id":0,
      "file_name":"einstein.jpg",
      "height":416,
      "width":416
    }
  ],
  "annotations":[
    {
      "id":0,
      "image_id":0,
      "category_id":0,
      "bbox":[
        687,
        579,
        65,
        38
      ]
    },
    {
      "id":1,
      "image_id":0,
      "category_id":0,
      "bbox":[
        498,
        575,
        81,
        42
      ]
    },
    {
      "id":2,
      "image_id":0,
      "category_id":1,
      "bbox":[
        586,
        579,
        122,
        198
      ]
    },
    {
      "id":3,
      "image_id":0,
      "category_id":2,
      "bbox":[
        563,
        835,
        153,
        48
      ]
    },
    {
      "id":4,
      "image_id":0,
      "category_id":3,
      "bbox":[
        347,
        324,
        453,
        660
      ]
    }
  ]
}