{
  "name": "PParis4_2to1",
  "coarse": {
    "root": "https://dl.ash2txt.org/community-uploads/forrest/volcomp",
    "key": "PHercParis4/volumes/20260411134726-2.400um-0.2m-78keV-masked.zarr",
    "um": 2.4
  },
  "fine": {
    "root": "https://dl.ash2txt.org/community-uploads/forrest/volcomp",
    "key": "PHercParis4/volumes/20260608103018-1.129um-0.2m-78keV-masked.zarr",
    "um": 1.129
  },
  "A": [
    [
      0.470804293787,
      0.00609936605641,
      0.000187565082851,
      5804.66688741
    ],
    [
      -0.00603809533579,
      0.470816434035,
      -0.00108363356973,
      5493.29292237
    ],
    [
      -0.000104544264095,
      0.00121516087692,
      0.470758384327,
      28082.4300117
    ]
  ],
  "A_inv": [
    [
      2.12367179495,
      -0.0275095463581,
      -0.000909462174959,
      -12150.5494437
    ],
    [
      0.0272364486626,
      2.12360460631,
      0.00487745032256,
      -11960.6513227
    ],
    [
      0.000401312104959,
      -0.00548773486977,
      2.12421915642,
      -59625.4195378
    ]
  ],
  "A_input": [
    [
      0.470804047467,
      0.00609932444081,
      0.000188333908043,
      5804.65192219
    ],
    [
      -0.00603791207481,
      0.470816320789,
      -0.00108357027482,
      5493.29228811
    ],
    [
      -0.000106425166562,
      0.00121478471557,
      0.470757482731,
      28082.4983087
    ]
  ],
  "A_published": [
    [
      0.470766692076,
      0.00608385728466,
      0.000197517524646,
      5805.34030208
    ],
    [
      -0.00608025307392,
      0.470829091819,
      -0.00107909597978,
      5493.89016395
    ],
    [
      -0.000176258729503,
      0.00126138879783,
      0.470742425434,
      28084.0530748
    ]
  ],
  "A_note": "A: fine level-0 voxel (x,y,z) -> coarse level-0 voxel (x,y,z), refined affine; fine(c) = A^-1 (c + D(c)), D the field (coarse L0 voxels, trilinear, clamped outside the grid)",
  "field": {
    "file": "field.f32",
    "n": [
      153,
      92,
      76
    ],
    "o": [
      7243.8400,
      5423.1700,
      28015.0600
    ],
    "h": 187.0000,
    "layout": "float32 [nz][ny][nx][3] x,y,z displacement in coarse L0 voxels; node (k,j,i) at o + h (i,j,k)",
    "max_abs": 5.8234
  },
  "fit": {
    "boxes": "passE.jsonl",
    "n": 30000,
    "accepted": 28188,
    "h": 187,
    "lam": 0.03,
    "huber": 0.5,
    "ncc_min": 0.3,
    "sec_max": 0.9,
    "curv_min": 0.002,
    "holdout": 5,
    "affine_only": 0,
    "coarse_um": 2.4,
    "affine_correction": [
      [
        -5.23927666851E-7,
        -8.58180356605E-8,
        0.00000163317424131,
        -0.057316067379
      ],
      [
        3.86127143939E-7,
        -2.45878795466E-7,
        1.33733242566E-7,
        -0.00528046599621
      ],
      [
        -0.00000400502663889,
        -7.42127479233E-7,
        -0.00000191531156991,
        0.149408123829
      ]
    ],
    "before": {
      "n": 28188,
      "p10_vox": 0.5968,
      "p50_vox": 1.3466,
      "p90_vox": 2.6105,
      "p99_vox": 3.9727,
      "mean_vox": 1.5009,
      "p50_um": 3.232,
      "p90_um": 6.265
    },
    "holdout_affine": {
      "n": 5638,
      "p10_vox": 0.5788,
      "p50_vox": 1.3545,
      "p90_vox": 2.5724,
      "p99_vox": 3.8477,
      "mean_vox": 1.4932,
      "p50_um": 3.251,
      "p90_um": 6.174
    },
    "holdout_field": {
      "n": 5638,
      "p10_vox": 0.1819,
      "p50_vox": 0.4242,
      "p90_vox": 0.9003,
      "p99_vox": 1.4900,
      "mean_vox": 0.4925,
      "p50_um": 1.018,
      "p90_um": 2.161
    },
    "insample_field": {
      "n": 28188,
      "p10_vox": 0.0021,
      "p50_vox": 0.0052,
      "p90_vox": 0.0117,
      "p99_vox": 0.0213,
      "mean_vox": 0.0062,
      "p50_um": 0.012,
      "p90_um": 0.028
    }
  }
}
