This is an option if you want to consider missing/extra chars too: https://en.wikipedia.org/wiki/Levenshtein_distance
You should be able to find implementations for most languages. Bye Lorenzo Il giorno ven 25 gen 2019 alle ore 11:56 Matthew Hodgskiss < [email protected]> ha scritto: > Hi, > > I am interested in evaluating the performance of Tesseract against some > domain specific test. I would like to perform a baseline using vanilla > settings and then with some domain-specific user-words and user-patterns as > documented here > <https://github.com/tesseract-ocr/tesseract/wiki/Command-Line-Usage>. > Is it possible to leverage the OCR evaluation process, which must be > performed during model training to calculate word and character error rates > on new (domain-specific) documents? > > If this is not possible, then I could synthesise my own scan images from > documents using ImageMagick > <https://gist.github.com/ThisIsBenny/1e669954d0fd0a945e38d0670c670c3c> > but it would be good if anyone could recommend a standard > algorithm/library for calculating character and word error rates. > > Thanks in advance > > Matt > > > > -- > You received this message because you are subscribed to the Google Groups > "tesseract-ocr" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/tesseract-ocr. > To view this discussion on the web visit > https://groups.google.com/d/msgid/tesseract-ocr/5cb0a65c-dae5-431b-9d0c-2c099d2cf90b%40googlegroups.com > <https://groups.google.com/d/msgid/tesseract-ocr/5cb0a65c-dae5-431b-9d0c-2c099d2cf90b%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tesseract-ocr. To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/CAMgOLLzNnBGd0SPwtQGS%3DHpxxCEyBtLWCZPwCUhaOWJO7UJvHg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
