{
 "schema": "unroll-inkbench/1",
 "tool": {
  "name": "inkbench",
  "version": "1.0.0",
  "impl": "python"
 },
 "created": "2026-10-16T03:52:15Z",
 "scroll": "PHerc0139",
 "segment": "w034",
 "reference": {
  "layer": "ink",
  "label": "Published ink (2.4 um), Vesuvius Challenge",
  "file": "data/bench/w034_ink.png",
  "sha256": "2a61bfe01f4967d373162c0e284aabd786d9a95b91a4f8cc93bfd17fb74056fd",
  "width": 640,
  "height": 584,
  "pxPerMM": 8.8557,
  "alignTargetFile": "data/bench/w034_ink.png",
  "alignTargetSha256": "2a61bfe01f4967d373162c0e284aabd786d9a95b91a4f8cc93bfd17fb74056fd"
 },
 "prediction": {
  "name": "w034_ct.png",
  "sha256": "0b0726cbc9d4fbf6a3851b580b4711606a59c7d221efbefebfe0af350cf74a5d",
  "format": "png",
  "width": 640,
  "height": 584,
  "normalization": "max255",
  "invert": false,
  "model": {
   "name": "baseline: X-ray intensity (same grid, no alignment needed)"
  }
 },
 "alignment": {
  "method": "manual",
  "target": "ink",
  "tx": 0.0,
  "ty": 0.0,
  "sx": 1.0,
  "sy": 1.0,
  "ncc": 0.249872,
  "coarseNcc": null,
  "evals": 0,
  "model": "bilinear, scale about grid center, then shift; units are reference px"
 },
 "metrics": {
  "nValid": 373760,
  "validFraction": 1.0,
  "pearson": 0.249872,
  "blurSigmaPx": 6.0,
  "blurSigmaUM": 677.5,
  "pearsonMatchedBlur": 0.389858,
  "thresholds": {
   "ref": 0.5,
   "pred": 0.5
  },
  "iou": 0.116884,
  "dice": 0.209304,
  "precision": 0.131412,
  "recall": 0.513912,
  "refPositiveFraction": 0.104332,
  "predPositiveFraction": 0.408008,
  "ap": 0.132244,
  "bestF1": {
   "f1": 0.217903,
   "threshold": 0.3
  },
  "pr": [
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    "recall": 0.001026
   },
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   },
   {
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   },
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   },
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   },
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    "precision": 0.123163,
    "recall": 0.927632
   },
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    "t": 0.12,
    "precision": 0.122894,
    "recall": 0.937607
   },
   {
    "t": 0.1,
    "precision": 0.122567,
    "recall": 0.946762
   },
   {
    "t": 0.08,
    "precision": 0.122257,
    "recall": 0.955994
   },
   {
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    "precision": 0.121928,
    "recall": 0.964457
   },
   {
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    "precision": 0.121627,
    "recall": 0.973279
   },
   {
    "t": 0.02,
    "precision": 0.121251,
    "recall": 0.981844
   },
   {
    "t": 0.0,
    "precision": 0.104332,
    "recall": 1.0
   }
  ]
 },
 "annotations": [],
 "credits": {
  "data": "PHerc. 139 scan, segments and published ink: Vesuvius Challenge open data (scrollprize.org), ESRF; held by the Biblioteca Nazionale di Napoli.",
  "dataLicense": "CC BY-NC 4.0 (https://creativecommons.org/licenses/by-nc/4.0/)",
  "code": "Unroll Ink Bench by Chase Hendrick",
  "codeLicense": "Apache-2.0"
 },
 "disclaimer": "Scores measure agreement with another model's output (the Vesuvius Challenge published ink detection), not agreement with ground truth. Letter boxes are candidates for expert review, not readings."
}