OCR for ancient Greek

Tools and advice for the Optical Character Recognition (OCR) of Ancient Greek

 * Ancient Greek OCR provides downloads and instructions for OCR using the Tesseract engine. Works on Windows, Linux, OSX & Android.
 * Antigrapheus allows you to use the Ancient Greek OCR training file above to OCR documents in a web browser, using Tesseract.js.
 * Bruce Robertson has created "Rigaudon", "a complete suite of scripts, python code and data required for producing polytonic Greek OCR"
 * Rigaudon GitHub page
 * Lace: Greek OCR collects results of OCR processing with Rigaudon on public domain texts
 * Initial reports on preliminary results of a survey of techniques: http://www.heml.org/RobertsonGreekOCR/
 * A number of people have produced training files for specific Greek fonts in the Kraken OCR engine:
 * Greek Cursive, from an edition of John Chrysostom's works by Henry Savile
 * Greek from an edition of Theodorus Gaza's Attic paraphrase of the Iliad
 * Greek models in the Kraken models repo (these are in the legacy pyrnn model format and may not work with the latest version of Kraken, see this issue)
 * The Gamera toolkit for analysing and scanning complex texts includes some experiments with polytonic Greek
 * Federico Boschetti did some earlier experimentation with adapting/training Google's OCR engine tesseract to ancient Greek texts: http://www.himeros.eu/ (related paper)
 * The commercial OCR software Anagnostis (€585) can handle ancient Greek, though apparently poorly
 * ABBYY FineReader can be made to work with ancient Greek with extensive training
 * Google Docs now allows you to have it do OCR on uploaded documents in a variety of languages, and you can get some results by specifying "Greek" and uploading a PDF (images seem not to work). Quality is about on the level of Google Books OCR of printed ancient Greek.

Alternatives

 * AccessTEI is a service for members of the TEI for manual keying of texts which can handle ancient Greek