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).
More information about this project can be found on my blog's unpaper tag.
This is Free Software released under the GNU General Public License, version 2.
Repository available on unpaper - GitHub.