Calamari-OCR/calamari
Line based ATR Engine based on OCRopy observed · 2026-08-28
Health v2 · maintenance only
74/100
- Activity 89
- Release rhythm 40
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 20.5
- age_days: 3088
- days_rel: 659
- days_push: 71
- n_releases_24m: 3
Adoption not part of the score
1197 stars · 210 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Calamari is a Python-based OCR engine for line-based automatic text recognition, built on OCRopy and Kraken with a TensorFlow deep-learning backend. It offers both a command-line interface and a modular Python API, with pretrained models available for many historical scripts.
Use cases
- recognize text in scanned historical documents
- train a custom OCR model for old prints
- run OCR on line images from the command line
- integrate OCR into a Python digitization pipeline
- recognize handwriting in manuscripts
- ensemble multiple OCR models for better accuracy
When to choose
- you need trainable, high-accuracy OCR for historical or non-Latin scripts
- you want a scriptable Python OCR engine with pretrained models
- you work with line-segmented images from OCRopy/Kraken pipelines
When to avoid
- you need general-purpose document layout analysis out of the box
- you want a GUI-based OCR tool
- you need OCR for modern documents where Tesseract suffices
Facets
library · maturity active
ocr machine-learning deep-learning cli computer-vision image-processing developer-tools python cli cross-platform ocr-engine ocropy kraken tensorflow handwritten-text-recognition historical-documents line-based-ocr natural-language-processing
1 source
- readme: https://github.com/Calamari-OCR/calamari · fetched 2026-08-28 · c9485e4f4c77
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| Calamari-OCR/calamari | main | 74 |
For agents
markdown · JSON · MCP: product_card(name="Calamari-OCR/calamari")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem