Re: [tesseract-ocr] training doubts

[Shree Devi Kumar]

For English, most of the times, preprocessing your images and using official traineddata will give better results than trying to do training.

For finetuning, (https://tesseract-ocr.github.io/tessdoc/TrainingTesseract-4.00.html#fine-tuning-for-impact) what is recommended is using the existing training text and a new font, so that there are minimal changes to traineddata. Using your own training data will not give you good results.

> train tesseract on my documents

Use the Makefile based training from tesstrain repo.

On Tue, Oct 20, 2020 at 11:00 PM Kumar Rajwani <kumarraj...@gmail.com> wrote:

hey i need small help as i have to train tesseract on my documents.
I have already read some training issues and i have steps that i can perform.

1. !tesseract "document.png" "document" -l eng --psm 11 wordstrbox it will give me line lavel box
   correct ocr. copy image file and box file in tessdata folder

2. src/training/tesstrain.sh --fonts_dir /usr/share/fonts --lang eng --linedata_only
   --noextract_font_properties --langdata_dir ../langdata
   --tessdata_dir ./tessdata --output_dir ~/tesstutorial/engtrain

• so this is right thing or i have to do anything else?

•  It will also finetune detection right?

•  can i finetune on word level like linedata_only?

•  i am using tesseract 5 and tessedit_do_invert=0 but it still slow. so which steps i can perform at time training will improve time.

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