Ein praktisches Online-Tool zum Thema Texterkennung findet sich bei Free OCR:
Free-OCR.com is a free online OCR (Optical Character Recognition) tool. You can use this service to extract text from any image you supply.
This service is free, no registration necessary. […]
Free-OCR can handle images with multi-column text and also supports more languages: Bulgarian, Catalan, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Indonesian, Italian, Latvian, Lithuanian, Norwegian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovene, Spanish, Swedish, Tagalog, Turkish, Ukrainian, Vietnamese.
Tatsächlich liefert dieser wunderbar einfache Service erstaunlich gute Ergebnisse.