Install unpaper by entering the following commands in the terminal:
sudo apt update sudo apt install unpaper
Description:
post-processing tool for scanned pages
unpaper is a post-processing tool for scanned sheets of paper, especially for book pages that have been scanned from previously created photocopies. . The main purpose is to make scanned book pages better readable on screen after conversion to PDF. Additionally, unpaper might be useful to enhance the quality of scanned pages before performing optical character recognition (OCR).
Homepage: http://www.flameeyes.eu/projects/unpaper
Version: 6.1-2
Section: universe/graphics