Training Tesseract 5 for a New Font
Why Stack Overflow recommends it
Stack Overflow users link it when they are trying to fine-tune Tesseract 5 for a custom font or language and need a step-by-step walkthrough, often while reporting problems following it.
Recommended by 1 people across 1 different months, 2022 to 2025.
What it is
A 17-minute screen-recorded tutorial by Gabriel Garcia on training Tesseract 5 to recognise a new font. It walks through generating ground-truth images and box files with a Python script, then running the tesstrain make command with the eng starting model, with a companion GitHub repo and a separate build-from-source video.
What people said
Recommends Solomon P Byer · 2024-04 · Stack Overflow · on “Tesseract training new font for Hebrew”
[LINK] Use this thing after making the .tifs and stuff with the Python script from this video [this video] . That GUI is so nice but you will need to also install the AutoHotkey stuff to get the GUI to run, that man deserves a coffee.
Cites Trenton McKinney · 2022-12 · Stack Overflow · on “Detecting Numbers in Image using pytesseract”
Here's a current example: [this video] However, you probably need to have a lot of labeled images to train the model.
Cites Maximus · 2023-02 · Stack Overflow · on “Trying training tesseract 5.3.0, "Couldnt find a matching blob" for every zero in training data. Other characters okay”
Yes I haven't just spent 2 days googling for a guide how to train it, soaking up everything, thanks. Anyways I found this guide [this video] Which led to setting up WLS with ubuntu and fixing "no such command" errors rabithole, fixed few issues in video guide by corelating it with official guide, got it to somewhat train and the result still sucks after training for quite some time. I guess Ill go read more docs or give up, thanks for amazing help
Cites Solomon P Byer · 2024-04 · Stack Overflow · on “Tesseract training new font for Hebrew”
I found this tutorial [this video] here and tried to follow the instructions I git cloned both tesseract and tesstrain [LINK] I added the heb.training_text from here [LINK] I made the folders and ran the python script that worked but the Training command: TESSDATA_PREFIX=../tesseract/tessdata make training MODEL_NAME=Apex START_MODEL= eng TESSDATA=../tesseract/tessdata MAX_ITERATIONS=10000 doesn't even seem to be supported. I need this font for rashi trained [LINK] Edit: this was the script in the video TESSDATA_PREFIX=../tesseract/tessdata make training MODEL_NAME=Apex START_MODEL= eng TESSDATA=../tesseract/tessdata MAX_ITERATIONS=10000 import os import random import pathlib import subprocess tr
Cites Impetus · 2025-03 · Stack Overflow · on “Tesseract Training: Error 'Integer (fast) model' When Using Apex.lstm”
I’ve been following this tutorial from YouTube: Guide to Tesseract Training [this video] and its corresponding GitHub repository: astutejoe/tesseract_tutorial. [LINK] The tutorial walks through the process of training a custom Tesseract model, but I've run into an issue when trying to continue training the model What we tried : Setup: I followed the steps in the tutorial to set up the environment, downloaded the necessary files, and began the training process using the base eng.traineddata model. Training Command : After preparing the training data and ground truth, I ran the following command to initiate the training: make training MODEL_NAME=Apex START_MODEL=eng TESSDATA=../tesseract/tessdata M