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{
  "segmentation_classes": {
    "0": "Background",
    "1": "Tool clasper",
    "2": "Tool wrist",
    "3": "Tool shaft",
    "4": "Suturing needle",
    "5": "Thread",
    "6": "Suction tool",
    "7": "Needle Holder",
    "8": "Clamps",
    "9": "Catheter"
  },
  "action_classes": {
    "0": "Other",
    "1": "Picking-up the needle",
    "2": "Positioning the needle tip",
    "3": "Pushing the needle through the tissue",
    "4": "Pulling the needle out of the tissue",
    "5": "Tying a knot",
    "6": "Cutting the suture",
    "7": "Returning/dropping the needle"
  },
  "note": "Action values on disk are 0-7; the upstream README table lists 1-8 and is off by one. Segmentation masks upstream are 3-channel RGB with R==G==B; stored here as single-channel.",
  "challenge_subsets": {
    "training_set_1": [
      2,
      4,
      5,
      6,
      8,
      9,
      10,
      11,
      12,
      15,
      16,
      17,
      19
    ],
    "training_set_2": [
      1,
      3,
      7,
      13,
      14,
      18,
      20,
      21,
      22,
      23,
      24,
      25,
      26,
      27,
      28,
      29,
      30,
      31,
      32,
      33,
      34,
      35,
      36,
      37,
      38,
      39,
      40
    ],
    "test": [
      41,
      42,
      43,
      44,
      45,
      46,
      47,
      48,
      49,
      50
    ],
    "note": "training_set_2 is corrected: the upstream README duplicates video 34 and omits video 14."
  }
}