gt_detection.json

{
  "data_root": "",
  "data_list": [
    {
      "img_name": "relative/path/xxx.jpg",
      "annotations": [
        {
          "polygon": [
            [
              x1,
              y1
            ],
            [
              x2,
              y2
            ],
            [
              x3,
              y3
            ],
            [
              x4,
              y4
            ]
          ],
          "text": "label",
          "illegibility":false,
          "language":"Latin",
          "chars": [
            {
              "polygon": [
                [
                  x1,
                  y1
                ],
                [
                  x2,
                  y2
                ],
                [
                  x3,
                  y3
                ],
                [
                  x4,
                  y4
                ]
              ],
              "char": "c",
              "illegibility": false,
              "language":"Latin"
            }
          ]
        }
      ]
    }
  ]
}