This paper describes the development history of the Tesseract OCR engine, and compares the methods to general
changes in the field over a similar time period. Emphasis is placed on the lessons learned with the goal of providing a
primer for those interested in OCR research.
Ray W. Smith, Ray W. Smith,
"History of the Tesseract OCR engine: what worked and what didn't", Proc. SPIE 8658, Document Recognition and Retrieval XX, 865802 (4 February 2013); doi: 10.1117/12.2010051; https://doi.org/10.1117/12.2010051