Fix some wrong German words (confusion B / ß) #54
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Replace wrong "EinfluB" and other variants by "Einfluß" and remove duplicate entries. Remove it also from the Latin wordlist. Signed-off-by: Stefan Weil <sw@weilnetz.de>
Remove wrong entries with "daB". All exists in the correct form "daß". Signed-off-by: Stefan Weil <sw@weilnetz.de>
Remove wrong entries with "muB" (or its variants). All exists in the correct form "muß". Signed-off-by: Stefan Weil <sw@weilnetz.de>
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@stweil Stefan, when the tesseract-ocr/langdata is updated, this does not mean that the /tessdata is updated, as far as I know. As your recent patches are very important for DE language (and would save me from publishing my post-filter |
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Yes, fixes in langdata need additional work to result in updates of tessdata. I'm afraid that I cannot do much there. See another comment which I have just written. To summarize, tessdata updates for Tesseract 3.x are manageable for contributors like me, but updates for Tesseract 4.x with LSTM are much more difficult. @theraysmith recently announced that he is going to start the training for an update of tessdata with an improved training process, and I hope that this is sufficient to fix some of the problems which we see for German texts (although I am not sure about that, see also the tesseract-dev forum). |
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Ray did not use the fixed dictionary when he created the LSTM traineddata files, but used new dictionaries with the old (and additional new) errors. |
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@stweil you said that improving the ocr result is harder with 4.0. What does "harder" mean? I can provide a lot of german scan input which has broken results. If training material is needed, just tell me. I could provide parts of scans where a single german word is visible and the corresponding word in utf8. |
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I am sorry to drop in here, but please have a look to the proposal (not a solution, yet) tesseract-ocr/tesseract#1442 [Suggestion] "Training light" - Learning by doing - re-feeding a corrected text file to retrain tesseract. |
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