CODEWITHSUNDEEP
python-3.xwindowspython-tesseract
Sator
Sator

Reputation: 776

How do I install a new language pack for Tesseract on Windows

I have installed the pytesseract module in my venv and want to extract text from a German image.

Eith executing this script from pytesseract and setting the language to German

import cv2

import pytesseract


try:
    from PIL import Image
except ImportError:
    import Image

print(pytesseract.image_to_string(Image.open('test.jpg')))

print(pytesseract.image_to_string(Image.open('test.jpg'), lang='ger'))

which gives me

raise TesseractError(proc.returncode, get_errors(error_string))
pytesseract.pytesseract.TesseractError: (1, 'Tesseract Open Source OCR Engine v3.05.00dev with Leptonica
 Error opening data file C:\\Program Files (x86)\\Tesseract-OCR/tessdata/ger.traineddata
 Please make sure the TESSDATA_PREFIX environment variable is set to the parent directory of your "tessdata" directory. Failed loading language \'ger\' Tesseract couldn\'t load any languages! Could not initialize tesseract.')

I have found the language data on [tessdoc/Data-Files] (https://github.com/tesseract-ocr/tessdoc/blob/master/Data-Files.md)

So far I only found a guide for Linux How do I install a new language pack for Tesseract on 16.04

Where do I need to move the language files in my pyteseract sitepackage to get the script working?

Upvotes: 8

Views: 21918

Answers (4)

sea Darren
sea Darren

Reputation: 1

I just apt-get to install, without set env TESSDATA_PREFIX.It works

apt-get install tesseract-ocr-YOUR_LANG_CODE

Upvotes: 0

A nik
A nik

Reputation: 21

Best way I've found:

  1. Download and install tesseract-ocr-w64-setup-v5.0.0-rc1.20211030.exe.
  2. Open https://github.com/tesseract-ocr/tessdata and download your language. For example, for Farsi download fas.traineddata.
  3. Copy the downloaded file to the tessreact_ocr installation location, some location like: C:\Program Files\Tesseract-OCR\tessdata
  4. Don't forget to use the traineddata name for the language. For Farsi, I use lang='fas'.

Upvotes: 2

fanbyprinciple
fanbyprinciple

Reputation: 780

There are two ways.

1. Install the corresponding tesseract package for your language -

  • apt-get install tesseract-ocr-YOUR_LANG_CODE

for example- in my case it was Bengali so I installed -

  • apt-get install tesseract-ocr-ben

or for installing all languages -

  • apt-get install tesseract-ocr-all.

This worked for me Ubuntu environment.

2. The other way is mentioned in the error message itself. Add an environment variable TESSDATA_PREFIX that point to the langauge pack. You can download the language pack from here: https://github.com/tesseract-ocr/tessdata .

Once you have downloaded the datapack you can also programmatically set the environment variable as

import os
os.putenv('TESSDATA_PREFIX','path/to/your/tessdata/file'

Upvotes: 3

Sator
Sator

Reputation: 776

found a guide to do this on a german site Python Texterkennung: Bild zu Text mit PyTesseract in Windows

Upvotes: 0

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