danvk/mapsnap

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• Try Graviton (ARM) spot for the loc-fit CPU chain

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  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  danvk/mapsnap#563 · Opened Oct 4, 2026

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• Simplify mapsnap: what to remove, and what a rebuild would keep

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  Difficulty 5/5 Over a week Newbie friendliness 20/100

  danvk/mapsnap#560 · Opened Oct 3, 2026

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• LoC page numbering errors

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  Difficulty 2/5 1-3 hours Newbie friendliness 58/100

  danvk/mapsnap#557 · Opened Oct 2, 2026

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• Keep unresolved number reads in adjacency.json

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  Difficulty 3/5 1-2 days Newbie friendliness 68/100

  danvk/mapsnap#556 · Opened Oct 2, 2026

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• Review 12 volumes whose LoC sheet numbering starts late

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  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  danvk/mapsnap#555 · Opened Oct 2, 2026

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• Add a notes view to volume viewer

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  debugger

  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  danvk/mapsnap#550 · Opened Sep 30, 2026

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• Score clip masks in isolation against OIM truth

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  Difficulty 5/5 Over a week Newbie friendliness 32/100

  danvk/mapsnap#548 · 2 comments · Opened Sep 29, 2026

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• One-GCP poses: street direction read at the intersection's kinks, and snap never checks them on panels

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  georef

  Difficulty 5/5 Over a week Newbie friendliness 45/100

  danvk/mapsnap#546 · 1 comment · Opened Sep 29, 2026

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• Initial release known issues

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  danvk/mapsnap#541 · Opened Sep 28, 2026

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• Georef rejects spelled-out direction words (SOUTH) as labels, not just N/S/E/W

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  Difficulty 3/5 1-2 days Newbie friendliness 72/100

  danvk/mapsnap#536 · Opened Sep 28, 2026

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• Avoid matching city and state name on Sanborn stamp in small volumes

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  ocr

  Difficulty 3/5 1-2 days Newbie friendliness 64/100

  danvk/mapsnap#535 · Opened Sep 28, 2026

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• Index OSM old_name and alt_name as additional street names

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  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  danvk/mapsnap#534 · Opened Sep 28, 2026

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• OSM names with a parenthetical suffix hide the street from label matching

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  Difficulty 2/5 1-3 hours Newbie friendliness 84/100

  danvk/mapsnap#533 · Opened Sep 28, 2026

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• Seed rotation veto compares a label with a long OSM way's overall direction, not the road it sits on

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  georef

  Difficulty 3/5 1-2 days Newbie friendliness 68/100

  danvk/mapsnap#532 · Opened Sep 28, 2026

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• Demoted-pose rotation prior has the wrong sign

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  Difficulty 3/5 1-2 days Newbie friendliness 78/100

  danvk/mapsnap#526 · Opened Sep 26, 2026

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• Record the background colour of every detection, and decide 'on a fill' when reading

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  Difficulty 3/5 1-2 days Newbie friendliness 65/100

  danvk/mapsnap#510 · Opened Sep 23, 2026

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• Fill gate keys on chroma, so a street label on pale blue passes as paper

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  Difficulty 3/5 1-2 days Newbie friendliness 74/100

  danvk/mapsnap#500 · Opened Sep 21, 2026

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• Volume scale is estimated from one or two fitted pages with no plausibility bound

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  danvk/mapsnap#498 · Opened Sep 21, 2026

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• A sub-floor read must not anchor a long extrapolation: cap reach by label size instead of gating relaxation

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  georef

  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  danvk/mapsnap#487 · 5 comments · Opened Sep 20, 2026

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• CRNN conflict repair turns an invalid decode into a confident valid page number

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  danvk/mapsnap#480 · Opened Sep 19, 2026

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• Key-map page-number reads flip on ±1 gray-level changes; read at several intensity offsets and keep the consensus

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  Difficulty 4/5 3-5 days Newbie friendliness 55/100

  danvk/mapsnap#479 · Opened Sep 19, 2026

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• Keymap regions that prove wrong shouldn't be used for scale gate

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  bug

  Difficulty 4/5 3-5 days Newbie friendliness 68/100

  danvk/mapsnap#478 · 1 comment · Opened Sep 18, 2026

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• The mirror and run-loc render the same scan differently, and split disagrees on 7% of sheets

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  danvk/mapsnap#471 · 3 comments · Opened Sep 18, 2026

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• The mirror drops every non-numeric page key, losing 43 CBD volumes

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  Difficulty 5/5 Over a week Newbie friendliness 42/100

  danvk/mapsnap#467 · Opened Sep 18, 2026

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• If only 1/2 keymaps georeference, half the pages are poisoned

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  bug georef keymap

  Difficulty 3/5 1-2 days Newbie friendliness 55/100

  danvk/mapsnap#456 · Opened Sep 17, 2026

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• Case-colliding page keys silently drop 11 sheets and leave phantom metadata rows

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  Difficulty 4/5 3-5 days Newbie friendliness 55/100

  danvk/mapsnap#423 · Opened Sep 14, 2026

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• Use P(road) continuity as a pairwise energy signal

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  reconciler

  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  danvk/mapsnap#410 · Opened Sep 12, 2026

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• Key-map detection floor (MIN_DISTINCT = 6) makes key maps undetectable in volumes with fewer than six sheets

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  keymap

  Difficulty 3/5 1-2 days Newbie friendliness 68/100

  danvk/mapsnap#405 · 1 comment · Opened Sep 10, 2026

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• Use the rotated margin street labels (continuation labels) in georef

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  Difficulty 5/5 Over a week Newbie friendliness 42/100

  danvk/mapsnap#400 · Opened Sep 8, 2026

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• Shared GCPs between pages: corroboration, alias rescue and a reconcile factor

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  Difficulty 5/5 Over a week Newbie friendliness 45/100

  danvk/mapsnap#399 · Opened Sep 7, 2026

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• ocr --resume re-reads every page since the fine-tuned recognizer became the default

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  Difficulty 3/5 1-2 days Newbie friendliness 78/100

  danvk/mapsnap#398 · Opened Sep 7, 2026

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• Create a script to do baseline runs

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  Difficulty 3/5 1-2 days Newbie friendliness 66/100

  danvk/mapsnap#395 · Opened Sep 6, 2026

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• Georeference secondary key maps cut from a key-map sheet

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  Difficulty 4/5 3-5 days Newbie friendliness 68/100

  danvk/mapsnap#390 · Opened Sep 2, 2026

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• Chicago key map: a stale p0 sidecar and a split that severs 7 page labels are cancelling each other out

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  danvk/mapsnap#378 · 1 comment · Opened Sep 2, 2026

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• street-solve: the remaining 1,628s/run is the polish path #339 did not vectorize, not the proposal loop

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  danvk/mapsnap#377 · Opened Sep 1, 2026

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• Confident street reads are silently dropped when the OSM name carries an unstrippable leading word (JO JOHNSTON, NEW JERSEY, GENERAL PERSHING)

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  danvk/mapsnap#373 · Opened Sep 1, 2026

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• Visualize street solver

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  debugger

  Difficulty 3/5 1-2 days Newbie friendliness 58/100

  danvk/mapsnap#369 · Opened Sep 1, 2026

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• Use self-number stamps as a split prior; divider-candidate cap vetoes real splits

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  adjacency split

  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  danvk/mapsnap#368 · Opened Aug 31, 2026

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• A legible stray character poisons the vocabulary-constrained decode

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  Difficulty 4/5 3-5 days Newbie friendliness 52/100

  danvk/mapsnap#365 · 2 comments · Opened Aug 29, 2026

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• Allow self-adjacency for splits

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  adjacency

  Difficulty 3/5 1-2 days Newbie friendliness 64/100

  danvk/mapsnap#359 · Opened Aug 28, 2026

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• Split-page seam claims are classified as 'center' and dropped (panel bbox vs panel shape)

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  adjacency

  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  danvk/mapsnap#358 · Opened Aug 28, 2026

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• Run mapsnap over all volumes in the Library of Congress

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  danvk/mapsnap#354 · 2 comments · Opened Aug 28, 2026

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• Promote one-sided adjacency claims closed by mutual-edge cycles

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  adjacency

  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  danvk/mapsnap#353 · 1 comment · Opened Aug 27, 2026

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• Content-region overlap as a wrong-fit signal and gap-filling constraint

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  reconciler

  Difficulty 5/5 Over a week Newbie friendliness 35/100

  danvk/mapsnap#352 · 7 comments · Opened Aug 26, 2026

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• Per-page adaptive working scale: coarse sheets need 50% imagery (measured on asheville)

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  Difficulty 5/5 Over a week Newbie friendliness 45/100

  danvk/mapsnap#351 · 1 comment · Opened Aug 25, 2026

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• Adjust RMSE threshold for scale

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  Difficulty 3/5 1-2 days Newbie friendliness 48/100

  danvk/mapsnap#345 · Opened Aug 22, 2026

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• RANSAC runner-up poses: emit near-ties, let snap/reconcile arbitrate them

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  reconciler

  Difficulty 4/5 3-5 days Newbie friendliness 54/100

  danvk/mapsnap#340 · 2 comments · Opened Aug 21, 2026

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• Failed-fit pages should offer their candidate GCPs as location priors

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  Difficulty 5/5 Over a week Newbie friendliness 42/100

  danvk/mapsnap#335 · 2 comments · Opened Aug 16, 2026

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• Pages with no channel sidecar get no georef-final (contract gap #2)

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  Difficulty 3/5 1-2 days Newbie friendliness 70/100

  danvk/mapsnap#334 · Opened Aug 15, 2026

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• Snap debugger view: alignment canvas, verification breakdown, candidate/decision explorer

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  danvk/mapsnap#325 · Opened Aug 14, 2026

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