Reading obliterated MS texts
A recent article explains a ‘method for reading faint, obscured, and obliterated manuscript texts’ using Adobe Photoshop (or the similar open-source GNU Image Manipulation Program): Hilary Havens, ‘Adobe Photoshop and Eighteenth-Century Manuscripts: A New Approach to Digital Paleography’, dhq (Digital Humanities Quarterly) 8. 4 (2014).
There are screenshots for every step of the procedure. The method will not solve all problems, but will be of some help in reading RLS manuscripts and letters where words have been crossed out, if these seem to be of potential interest.
Thanks to Marina Dossena for passing on this reference.