First make sure you are in the directory where the project is. You should see main.py, inputs, requirements.txt, and README.md. To make this project run first install a virtual environment.

python3 -m venv venv

Activate the virtual environment.

source venv/bin/activate 

Install the requirements.

pip install -r requirements.txt

To run the project exectute the following.

python main.py inputs/sonic.jpg

This will produce the result in the same directory with the name output.jpg.