Timo Röhling Timo Röhling Ph.D. Student Contact: Email: roehling@nulligg.uni-bonn.de Tel: +49 – 228 – 73 – Fax: +49 – 228 – 73 – 27 12 Office: Nussallee 15, Address: University of Bonn Photogrammetry, IGG Nussallee 15 53115 Bonn