Suppression of shock based errors with gravity related endoscopic image rectification - Höller, Kurt Emmerich; Penne, Jochen; Schneider, Armin; Jahn, Jasper; Girgis, Hani; Guttierrez, Javier; Wittenberg, Thomas; Feußner, Hubertus; Hornegger, Joachim (Proceedings of the 5th Russian-Bavarian Conference on Biomedical Engineering, 2009)