Please, use Python 3.
First, initialize virtual environment
virtualenv .venv
. .venv/bin/activate
pip install -r requirements.txt
Then, download german.7z into dictionary/ directory and unpack it
mkdir dictionary
cd dictionary/
wget https://downloads.sourceforge.net/project/germandict/german.7z
7zr e german.7z
cd ..
Next, copy all OCR *.txt files into ocr-hlsl/ directory
mkdir ocr-hlsl
cp ~/Downloads/ocr-hlsl/*.txt ocr-hlsl/
Last, copy all OCR *.xml files into ocr-inno/ directory
mkdir ocr-inno
cp ~/Downloads/ocr-inno/*.xml ocr-inno/
python main.py