Last edited on 28th March, 2006 by gs/ gs. - Home page: WWW StatLab Heidelberg or CD home.

Data set


Short description

This is an excerpt of a letter from Gauss to Bessel, used with kind permission of the Niedersächsische Staats- und Universitätsbibliothek Göttingen. The original letter has been photocopied, and the copy has been scanned in at 300dpi using a grey level scanner. The data are stored in TIFF format.

The challenge is to reconstruct the original writing from the available data. For more information, see the story of this letter.

Original location


(1.4MB) <> or compressed as <>


G. Sawitzki, StatLab Heidelberg.

Analysis and image processing has been done using NIH Image by Wayne Rasband and special purpose plug-ins.