OS Specific Packages

Ubuntu Bionic 18.04 (LTS)

Install required ubuntu packages:

sudo apt-get update
sudo apt-get install python3 python3-pip python3-venv \
    poppler-utils \
    imagemagick \
    build-essential \
    tesseract-ocr \
    tesseract-ocr-eng \
    tesseract-ocr-fra \
    tesseract-ocr-deu \
    tesseract-ocr-ron \
    tesseract-ocr-rus \
    tesseract-ocr-spa \
    tesseract-ocr-tur

Every language has its own tesseract-ocr-<code> package. You will have to install tesseract language package for each language you want to OCR.