convert labelme2coco from AI Mask

[ksv87]

I created AI-Mask instead of AI-Polygons, do you have sample script how to convert AI-Mask to coco annotation file?

{
  "version": "5.4.1",
  "flags": {},
  "shapes": [
    {
      "label": "myclass",
      "points": [
        [
          899.0,
          429.0
        ],
        [
          930.0,
          462.0
        ]
      ],
      "group_id": null,
      "description": "",
      "shape_type": "mask",
      "flags": {},
      "mask": "iVBORw0KGgoA...ggg=="
    },
...

[ksv87]

I try change this
https://github.com/labelmeai/labelme/blob/3a1f6554072dbf6e5b4a2cf6f5130399b5a708d5/examples/instance_segmentation/labelme2coco.py#L116-L124

        for shape in label_file.shapes:
            points_origin = shape["points"]
            label = shape["label"]
            group_id = shape.get("group_id")
            shape_type = "polygon"#shape.get("shape_type", "polygon")
            mask = shape.get("mask")
            import labelme.ai._utils as ut
            points = ut.compute_polygon_from_mask(mask)
            points += points_origin[0]
            mask = labelme.utils.shape_to_mask(img.shape[:2], points, shape_type)

            if group_id is None:
                group_id = uuid.uuid1()