{
 "schema": "unroll-inkbench/1",
 "tool": {
  "name": "inkbench",
  "version": "1.0.0",
  "impl": "python"
 },
 "created": "2026-10-16T03:47:56Z",
 "scroll": "PHerc0139",
 "segment": "w024",
 "reference": {
  "layer": "ink",
  "label": "Published ink (2.4 um), Vesuvius Challenge",
  "file": "data/bench/w024_ink.png",
  "sha256": "496166c98593362e8fb6d3e10f489397028271d4f51714a05b7435aab685f327",
  "width": 597,
  "height": 640,
  "pxPerMM": 9.6321,
  "alignTargetFile": "data/bench/w024_ink.png",
  "alignTargetSha256": "496166c98593362e8fb6d3e10f489397028271d4f51714a05b7435aab685f327"
 },
 "prediction": {
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  "sha256": "7f21087fc1b5a1a5812e02d24134004524373408d5fe533939f12003f90c6517",
  "format": "png",
  "width": 597,
  "height": 640,
  "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": 0.361809,
  "coarseNcc": null,
  "evals": 0,
  "model": "bilinear, scale about grid center, then shift; units are reference px"
 },
 "metrics": {
  "nValid": 382080,
  "validFraction": 1.0,
  "pearson": 0.361809,
  "blurSigmaPx": 6.0,
  "blurSigmaUM": 622.9,
  "pearsonMatchedBlur": 0.464513,
  "thresholds": {
   "ref": 0.5,
   "pred": 0.5
  },
  "iou": 0.288116,
  "dice": 0.447345,
  "precision": 0.418449,
  "recall": 0.480526,
  "refPositiveFraction": 0.333917,
  "predPositiveFraction": 0.383454,
  "ap": 0.41647,
  "bestF1": {
   "f1": 0.574501,
   "threshold": 0.02
  },
  "pr": [
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   },
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   },
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   },
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    "precision": 0.409727,
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    "precision": 0.40926,
    "recall": 0.939028
   },
   {
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    "recall": 0.948434
   },
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    "t": 0.08,
    "precision": 0.408117,
    "recall": 0.95722
   },
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    "precision": 0.407705,
    "recall": 0.965481
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    "precision": 0.40722,
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   },
   {
    "t": 0.02,
    "precision": 0.406165,
    "recall": 0.981134
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   {
    "t": 0.0,
    "precision": 0.333917,
    "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."
}