LabelMe JSON

The native format of LabelMe, an open source graphical image annotation tool written in Python and available for Windows, Mac, and Linux.

Overview

LabelMe is an actively developed open source graphical image annotation tool inspired by the app of the same name released in 2012 by MIT CSAIL.

It is capable of annotating images for object detection, segmentation, and classification (along with polygon, circle, line, and point annotations). It also supports annotating videos.

The app is cross-platform and runs on Ubuntu, macOS, and Windows using Qt4 (or Qt5) and Python (2 or 3). A docker container is also available.

Also check out our LabelMe Tutorial.

Format Description

Below, learn the structure of LabelMe JSON.

labelme.chess.jsonJSON

{
  "version": "4.5.6",
  "flags": {},
  "shapes": [
    {
      "label": "black-bishop",
      "points": [
        [
          250.5,
          44.0
        ],
        [
          285.0,
          112.5
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "white-knight",
      "points": [
        [
          128.5,
          44.0
        ],
        [
          168.5,
          110.5
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "white-king",
      "points": [
        [
          110.5,
          153.5
        ],
        [
          160.0,
          253.5
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "white-bishop",
      "points": [
        [
          91.0,
          295.0
        ],
        [
          136.5,
          366.0
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "white-pawn",
      "points": [
        [
          242.0,
          253.5
        ],
        [
          277.5,
          306.5
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "white-queen",
      "points": [
        [
          317.0,
          33.0
        ],
        [
          357.0,
          117.0
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "white-bishop",
      "points": [
        [
          367.5,
          1.5
        ],
        [
          401.0,
          69.5
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "black-rook",
      "points": [
        [
          484.5,
          56.5
        ],
        [
          522.5,
          113.0
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "black-king",
      "points": [
        [
          557.0,
          108.0
        ],
        [
          614.5,
          206.0
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "black-pawn",
      "points": [
        [
          384.0,
          153.0
        ],
        [
          412.5,
          204.5
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "black-bishop",
      "points": [
        [
          388.5,
          242.0
        ],
        [
          428.0,
          310.5
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "black-pawn",
      "points": [
        [
          517.5,
          249.5
        ],
        [
          553.0,
          303.5
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    },
    {
      "label": "black-knight",
      "points": [
        [
          466.5,
          356.5
        ],
        [
          516.0,
          430.5
        ]
      ],
      "group_id": null,
      "shape_type": "rectangle",
      "flags": {}
    }
  ],
  "imagePath": "0af.jpg",
  "imageData": "/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0aHBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBg...",
  "imageHeight": 512,
  "imageWidth": 765
}

LabelMe JSON

Overview

Format Description

Convert Data from LabelMe JSON

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