datacode2d opimage2d → tableimport fullseye as fs; fs.ledger.dm_locate(image) -> 'dict' (実装を直接呼ぶなら import dmsym; dmsym.dm_locate(image) -> 'dict'、台帳から引くなら opssymbol.get("dm_locate"))画像から Data Matrix を見つけ、モジュール空間 → 画像の射影変換を推定する(table)。
Locate a dark-on-light ECC200 symbol (quiet zone >= 1 module). Global binarisation (Otsu start, then the midpoint of the dark/light means), dark pixels grouped after a distance-based closing at several radii (so separated dot-peen dots join), near max-area quadrilateral in the convex hull, sub-pixel edge lines (grey-level threshold crossings, inward outliers from the clock gaps trimmed), corners = line intersections, then the size and which corner is the L corner are chosen by the agreement of the sampled function pattern (finder + clock + alignment) for every supported size and corner correspondence.
dict
homography 3x3(module 空間 [x=列, y=行, 1] → 画像 [列, 行, w])、rows, cols,
corners (4, 2) 画素の (行, 列)、順は module 空間の (0,0), (C,0), (C,R), (0,R)、
module_px, score(機能パターンの一致率), threshold(大域閾値 / global threshold)。
ValueError 2-D でない・NaN/inf・小さすぎる。 DMDecodeError 記号が見つからない。
py -3.11 examples/poc_symbol_part_dpm.pytable を入力に取れる)render_symbol · symbol_read_trials · symbol_read_pod · ocr_classify · ocr_read_line · ocr_read_trials
datacode2d)qr_encode · qr_decode_modules · qr_locate · qr_sample · qr_read · dm_encode · dm_decode_modules · dm_sample
Provenance: dmsym.py — SYMBOL operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.