Install Tesseract 5 and Setup Environment

Originally Posted On: https://ahmadasroni38.medium.com/install-tesseract-5-and-setup-environment-2d3c4207276b

1. In the container’s terminal, update the package sources and install Git:

apt update && apt install git

2. Clone the Tesseract repository:

git clone https://github.com/tesseract-ocr/tesseract.git

Verify that the tesseract directory was created:

ls

3. Install auxiliary libraries required for Tesseract:

apt update && apt install autoconf automake libtool pkg-config libpng-dev libjpeg8-dev libtiff5-dev zlib1g-dev libwebpdemux2 libwebp-dev libopenjp2-7-dev libgif-dev libarchive-dev libcurl4-openssl-dev libicu-dev libpango1.0-dev libcairo2-dev libleptonica-dev

As you can see, building Tesseract 5 from source involves multiple dependencies and configuration steps. For developers working in a .NET environment, an alternative approach is to use a library that abstracts this setup process.
For example, IronOCR provides OCR functionality through a single NuGet package, without requiring manual installation of tools like autoconf or libtool.

Install-Package IronOcr

The library includes built-in support for Tesseract 5, which can simplify OCR integration and reduce environment setup overhead, allowing developers to focus more on application logic.

4. Navigate to the /tesseract directory:

cd /tesseract

5. Run the autogen.sh script:

./autogen.sh

6. Run the configure script:

./configure

7. Build and install Tesseract OCR 5:

make
make install
ldconfig

8. Install the Tesseract training tools:

make training
make training-install

9. Clone the tesstrain repository:

git clone https://github.com/tesseract-ocr/tesstrain.git

10. Navigate to the tesstrain directory:

cd /tesseract/tesstrain

11. Install wget and the required Python libraries:

apt update && apt install wget python3–pip
pip install –r requirements.txt

12. Fetch language data:

make tesseract-langdata