Post-Processing Tool for Scanned Text Pages (fork)
The unpaper command line tool helps with post-processing scanned text pages, especially with book pages scanned from photocopies. unpaper tries to remove dark edges, corrects the rotation ("deskewing"), and aligns the centering of pages.
The software comes originally from Jens Gulden, and was forked by Flameeyes
in September 2011 as the original author wasn't reachable, and a number of issues
started to crop out with it. Since the original hosting provider (Berlios) is
going to be shut down at the end of 2011, this is likely to be considered the
only active project for it. Issues and code are tracked on GitHub.