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RnD · 2026

Scriptoria

Recognising archival documents in pre-reform orthography

  • OCR
  • manuscript-ocr
  • ONNX
Scriptoria

Context

Pre-reform print (ѣ, і, ъ) in two columns: the library's own text layer breaks words apart and mixes the columns, so it can't be searched.

Task

Put archive recognition on a conveyor and leave to a human what carries the document's meaning.

Approach

manuscript-ocr on a CPU: a YOLO26-X detector and a TRBA-Lite recogniser with the pre-reform alphabet, plus a column-aware reading order. Checkpoints — law numbers, dates, citations of the Collection of Statutes, sums — go to a human, who re-reads the scan and types the value.

Result

The first 10 pages of the Complete Collection of Laws, vol. XIV, 1894 (Russian State Library): 3,130 words in about 2.5 minutes on a CPU. Searchable text in the original orthography; the checkpoints verified by a human.