How to install language in tesseract OCR

Question

I have installed tesseract OCR and it has only 'eng' and 'osd' in the language list. I need german language. I tired following command

brew install tesseract-ocr-deu

but i am getting error.

Error: No available formula with the name "tesseract-ocr-deu" 
==> Searching for a previously deleted formula (in the last month)...
Warning: homebrew/core is shallow clone. To get complete history run:
   git -C "$(brew --repo homebrew/core)" fetch --unshallow

Error: No previously deleted formula found.
==> Searching for similarly named formulae...
Error: No similarly named formulae found.
==> Searching taps...
==> Searching taps on GitHub...
Error: No formulae found in taps.

Please check this: https://askubuntu.com/a/798492/810971 – Ahmed Hussein Jan 31 '20 at 15:15 — Ahmed Hussein, Jan 31 '20 at 15:15

score 28 · Answer 1 · answered Mar 09 '20 at 05:19

28

On mac OS type

brew install tesseract-lang

Installs all languages, you can check them by,

tesseract --list-langs

answered Mar 09 '20 at 05:19

Sahana M

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Is it possible, to install just one specific language? Something like `brew install tesseract-deu`, which just installs the german one. Unfortunately this only gives me `These similarly named formulae were found: tesseract ✔ tesseract-lang ✔ To install one of them, [...] Error: No previously deleted formula found. [...] Error: No formulae found in taps.` – Cadoiz Oct 06 '22 at 11:57

score 15 · Answer 2 · edited Oct 06 '22 at 16:47

15

With Homebrew, this works: (tested on MacOS Mojave 10.14.3)

   brew install tesseract-lang

edited Oct 06 '22 at 16:47

Cadoiz

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answered Mar 27 '19 at 09:49

weivall

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score 15 · Answer 3 · edited Oct 23 '22 at 01:32

For completeness, I am adding an answer on how to install and use a non-English language with Tesseract OCR on Linux. Since this is the first result I got on Google and I think it may help someone.

To install German language on Ubuntu/Debian/Linux Lite:

$ sudo apt-get install tesseract-ocr-deu

Language codes of all supported languages can be found here.

To specify the language in OCR engine use option: -l lang, e.g. for German:

$ tesseract -l deu 'imagename' 'stdout'

score 6 · Answer 4 · answered Apr 20 '22 at 06:51

I had to install Italian language but tesseract-lang installation cost 164 files, 654.0MB and gives the less precise version fast vs best so I decided to go manual

Add path to shell (if you brew on Mac find your path with brew info tesseract)

export TESSDATA_PREFIX=/usr/local/Cellar/tesseract/5.1.0/share/tessdata/

Update profile (if you are on zsh)

source ~/.zshrc

Save the language in my case the best version of ita

wget -O $TESSDATA_PREFIX/ita.traineddata https://github.com/tesseract-ocr/tessdata/raw/main/ita.traineddata

Now you should see the added language

tesseract --list-langs

I had to use `export TESSDATA_PREFIX=/opt/homebrew/Cellar/tesseract/5.2.0/share/tessdata` and also had to use `brew install wget` but thanks for steering me right :) — Grant, Nov 04 '22 at 03:35

score 4 · Answer 5 · answered Oct 19 '18 at 12:36

4

You download them from tesseract repository.

At the moment tessdata for 4.0 is available here and tessdata for 3.04 here.

answered Oct 19 '18 at 12:36

Dmitrii Z.

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How to install language in tesseract OCR

5 Answers5