{
 "note": "Public crops of released segments that are not prize-eligible. Ink Lens reads them anonymously from the open-data bucket when someone runs one; nothing is bundled. Crops are (y0, y1, x0, x1) on the segment's 9 um surface volume, the 640 px windows of densest labeled ink used in docs/results.json. A window chosen with the labels gives a development number, not a blind test. scan24: the same segment on its finer scan (about 2.4 um), where every model of the comparison runs: its crop is on the 9.6 um grid (the labels' level 2, the 2.4 um render pooled 4x), centered where the 9 um crop is, by the two canvases' proportions; ct is the scan the 3D models read.",
 "bucket": "https://vesuvius-challenge-open-data.s3.us-east-1.amazonaws.com",
 "samples": [
  {
   "id": "0841-w00",
   "title": "PHerc0841 w00 (held out from d9v2 and ink_9um)",
   "scroll": "PHerc0841",
   "segment": "20260220213127-w00",
   "surface_volume": "surface-volumes/9.366um-1.2m-113keV-volume-20250821151531.zarr",
   "labels": "ink-labels/2.403um-volume-20260319124803/20260918",
   "tifxyz": "mesh/20260220213127-on-20250821151531-9.366um.tifxyz",
   "um_per_px": 9.366,
   "surface_shape": [
    4220,
    4760
   ],
   "crop": [
    2624,
    3264,
    2688,
    3328
   ],
   "role": "development",
   "scan24": {
    "surface_volume": "surface-volumes/2.403um-0.22m-77keV-volume-20260319124803.zarr",
    "um_per_px": 2.403,
    "level0_shape": [
     16460,
     18560
    ],
    "grid_shape": [
     4115,
     4640
    ],
    "crop": [
     2551,
     3191,
     2612,
     3252
    ],
    "tifxyz": "mesh/20260220213127-on-20260319124803-2.403um.tifxyz",
    "ct": "PHerc0841/volumes/20260319124803-2.403um-0.2m-77keV-masked.zarr"
   }
  },
  {
   "id": "0841-ag896",
   "title": "PHerc0841 auto-grown 896 (held out from d9v2 and ink_9um)",
   "scroll": "PHerc0841",
   "segment": "20260220214732-auto_grown_20260220144552896",
   "surface_volume": "surface-volumes/9.366um-1.2m-113keV-volume-20250821151531.zarr",
   "labels": "ink-labels/2.403um-volume-20260319124803/20260918",
   "um_per_px": 9.366,
   "surface_shape": [
    4640,
    4720
   ],
   "crop": [
    2496,
    3136,
    1600,
    2240
   ],
   "role": "development",
   "scan24": {
    "surface_volume": "surface-volumes/2.403um-0.22m-77keV-volume-20260319124803.zarr",
    "um_per_px": 2.403,
    "level0_shape": [
     18080,
     18400
    ],
    "grid_shape": [
     4520,
     4600
    ],
    "crop": [
     2423,
     3063,
     1551,
     2191
    ],
    "tifxyz": "mesh/20260220214732-on-20260319124803-2.403um.tifxyz",
    "ct": "PHerc0841/volumes/20260319124803-2.403um-0.2m-77keV-masked.zarr"
   }
  },
  {
   "id": "0841-ag405",
   "title": "PHerc0841 auto-grown 405 (held out from d9v2 and ink_9um)",
   "scroll": "PHerc0841",
   "segment": "20260221022814-auto_grown_20260220174252405",
   "surface_volume": "surface-volumes/9.366um-1.2m-113keV-volume-20250821151531.zarr",
   "labels": "ink-labels/2.403um-volume-20260319124803/20260918",
   "um_per_px": 9.366,
   "surface_shape": [
    3760,
    4900
   ],
   "crop": [
    1024,
    1664,
    2496,
    3136
   ],
   "role": "development",
   "scan24": {
    "surface_volume": "surface-volumes/2.403um-0.22m-77keV-volume-20260319124803.zarr",
    "um_per_px": 2.403,
    "level0_shape": [
     14660,
     19100
    ],
    "grid_shape": [
     3665,
     4775
    ],
    "crop": [
     990,
     1630,
     2424,
     3064
    ],
    "tifxyz": "mesh/20260221022814-on-20260319124803-2.403um.tifxyz",
    "ct": "PHerc0841/volumes/20260319124803-2.403um-0.2m-77keV-masked.zarr"
   }
  },
  {
   "id": "0139-w035",
   "title": "PHerc0139 w035 (training segment: a pipeline check, not a test)",
   "scroll": "PHerc0139",
   "segment": "20260317000000-w035_2026031718",
   "surface_volume": "surface-volumes/9.362um-1.2m-113keV-volume-20250728140407.zarr",
   "labels": "ink-labels/2.399um-volume-20260102150214/20260918",
   "um_per_px": 9.362,
   "surface_shape": [
    5820,
    5240
   ],
   "crop": [
    1920,
    2560,
    2304,
    2944
   ],
   "role": "training",
   "scan24": {
    "surface_volume": "surface-volumes/2.399um-0.22m-78keV-volume-20260102150214.zarr",
    "um_per_px": 2.399,
    "level0_shape": [
     22640,
     20400
    ],
    "grid_shape": [
     5660,
     5100
    ],
    "crop": [
     1858,
     2498,
     2234,
     2874
    ],
    "tifxyz": "mesh/20260317000000-on-20260102150214-2.399um.tifxyz",
    "ct": "PHerc0139/volumes/20260102150214-2.399um-0.2m-78keV-masked.zarr"
   }
  }
 ]
}