{
 "about": "Frozen reader curves of QR Scan Difficulty's 8-scanner fit: P(read) = 1 / (1 + exp(-a (theta - b))); d = 100 (b - lo) / (hi - lo), clipped to 0..100; prior on b: normal, mean 0, sd prior_b.",
 "build": "ab950967c2e3",
 "decoders": [
  "zxing-cpp",
  "wechat",
  "opencv",
  "opencv-aruco",
  "zxing-java"
 ],
 "frames": [
  1920,
  1280,
  896,
  640,
  448,
  320,
  224
 ],
 "theta": [
  [
   0.27710888957722746,
   0.27674712139198787,
   0.27068171765609134,
   0.24626287308252567,
   0.14845170815280972,
   0.06487296561403709,
   -0.034823169433909805
  ],
  [
   0.4698073392516885,
   0.46650221681442977,
   0.4669085248830118,
   0.4616012079575098,
   0.43301066108452313,
   0.3266129273009262,
   0.26600348740597174
  ],
  [
   -0.29859519631484205,
   -0.27189106695948,
   -0.312673328272636,
   -0.39309536108346227,
   -0.424328897396233,
   -0.5050346696762299,
   -0.6683734772327675
  ],
  [
   0.12090703519556142,
   0.10622214141632878,
   0.07847529392515855,
   0.02204415020301258,
   -0.07169233278426787,
   -0.12154126407558924,
   -0.22883152282836713
  ],
  [
   0.10857481839820793,
   0.11369131213732923,
   0.09403603073039782,
   0.04805814854780917,
   -0.33551781410071935,
   -0.35319714356894355,
   -0.1546374310859858
  ]
 ],
 "a": [
  [
   40.0,
   40.0,
   40.0,
   40.0,
   20.553905731889362,
   12.391492867303578,
   7.801398322477276
  ],
  [
   9.972181752968174,
   10.317143603145677,
   10.459521854212188,
   9.699688051445548,
   7.69244123200513,
   5.258204348674037,
   3.288641634367092
  ],
  [
   3.5518543114483623,
   3.799591138001596,
   4.22906286613059,
   5.411315532084713,
   5.898060195693762,
   5.855331596391735,
   5.2254797365781345
  ],
  [
   8.643227521632946,
   9.281797459543874,
   10.208288201647807,
   11.838194833068727,
   13.457647525595197,
   9.967122415704294,
   9.062951292244799
  ],
  [
   8.657421929842052,
   9.323487870604488,
   10.776144697875182,
   14.583314136756151,
   4.751850240644109,
   5.11240184349814,
   7.711293510056291
  ]
 ],
 "lo": -0.5646,
 "hi": 0.8958,
 "prior_b": 2.5
}